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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 01:47:29 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 01:47:29 +0000
commit0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d (patch)
treea31f07c9bcca9d56ce61e9a1ffd30ef350d513aa /testing/web-platform/tests/css/css-ui
parentInitial commit. (diff)
downloadfirefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.tar.xz
firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.zip
Adding upstream version 115.8.0esr.upstream/115.8.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/css/css-ui')
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-rw-r--r--testing/web-platform/tests/css/css-ui/support/cursors/.htaccess3
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-rw-r--r--testing/web-platform/tests/css/css-ui/support/cursors/woolly-64.svg60
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-rw-r--r--testing/web-platform/tests/css/css-ui/support/nav-up-009-frame.html7
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-rw-r--r--testing/web-platform/tests/css/css-ui/support/nav-up-013-frame.html13
-rw-r--r--testing/web-platform/tests/css/css-ui/support/orange.pngbin0 -> 1851 bytes
-rw-r--r--testing/web-platform/tests/css/css-ui/support/orange.svg4
-rw-r--r--testing/web-platform/tests/css/css-ui/support/r1-1.svg2
-rw-r--r--testing/web-platform/tests/css/css-ui/support/red.icobin0 -> 894 bytes
-rw-r--r--testing/web-platform/tests/css/css-ui/support/test.mp4bin0 -> 187227 bytes
-rw-r--r--testing/web-platform/tests/css/css-ui/support/test.ogvbin0 -> 287648 bytes
-rw-r--r--testing/web-platform/tests/css/css-ui/support/test.webmbin0 -> 190970 bytes
-rw-r--r--testing/web-platform/tests/css/css-ui/support/w100.svg2
-rw-r--r--testing/web-platform/tests/css/css-ui/support/w100_h100.svg2
-rw-r--r--testing/web-platform/tests/css/css-ui/support/w100_r1-1.svg2
-rw-r--r--testing/web-platform/tests/css/css-ui/text-overflow-001.html29
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-rw-r--r--testing/web-platform/tests/css/css-ui/text-overflow-ellipsis-self-painting.html35
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-rw-r--r--testing/web-platform/tests/css/css-ui/text-overflow-ref.html17
-rw-r--r--testing/web-platform/tests/css/css-ui/text-overflow-ruby-ref.html83
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-rw-r--r--testing/web-platform/tests/css/css-ui/text-overflow.html29
-rwxr-xr-xtesting/web-platform/tests/css/css-ui/tools/appearance-build-webkit-reftests.py28
-rw-r--r--testing/web-platform/tests/css/css-ui/tools/build-compute-kind-widget-fallback-props.py122
-rw-r--r--testing/web-platform/tests/css/css-ui/translucent-outline-ref.html3
-rw-r--r--testing/web-platform/tests/css/css-ui/translucent-outline.html12
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-rw-r--r--testing/web-platform/tests/css/css-ui/user-select-inheritance.html26
-rw-r--r--testing/web-platform/tests/css/css-ui/user-select-none-in-editable.html40
-rw-r--r--testing/web-platform/tests/css/css-ui/user-select-none-on-input.html41
-rw-r--r--testing/web-platform/tests/css/css-ui/webkit-appearance-auto-001.html32
-rw-r--r--testing/web-platform/tests/css/css-ui/webkit-appearance-auto-input-non-widget-001.html16
-rw-r--r--testing/web-platform/tests/css/css-ui/webkit-appearance-button-001.html32
-rw-r--r--testing/web-platform/tests/css/css-ui/webkit-appearance-checkbox-001.html32
-rw-r--r--testing/web-platform/tests/css/css-ui/webkit-appearance-listbox-001.html32
-rw-r--r--testing/web-platform/tests/css/css-ui/webkit-appearance-menulist-001.html32
-rw-r--r--testing/web-platform/tests/css/css-ui/webkit-appearance-menulist-button-001.html32
-rw-r--r--testing/web-platform/tests/css/css-ui/webkit-appearance-menulist-button-002.tentative.html44
-rw-r--r--testing/web-platform/tests/css/css-ui/webkit-appearance-meter-001.html32
-rw-r--r--testing/web-platform/tests/css/css-ui/webkit-appearance-parsing.html43
-rw-r--r--testing/web-platform/tests/css/css-ui/webkit-appearance-progress-bar-001.html32
-rw-r--r--testing/web-platform/tests/css/css-ui/webkit-appearance-progress-bar-002.html20
-rw-r--r--testing/web-platform/tests/css/css-ui/webkit-appearance-property.html128
-rw-r--r--testing/web-platform/tests/css/css-ui/webkit-appearance-push-button-001.html32
-rw-r--r--testing/web-platform/tests/css/css-ui/webkit-appearance-radio-001.html32
-rw-r--r--testing/web-platform/tests/css/css-ui/webkit-appearance-searchfield-001.html32
-rw-r--r--testing/web-platform/tests/css/css-ui/webkit-appearance-serialization.html48
-rw-r--r--testing/web-platform/tests/css/css-ui/webkit-appearance-slider-horizontal-001.html32
-rw-r--r--testing/web-platform/tests/css/css-ui/webkit-appearance-square-button-001.html32
-rw-r--r--testing/web-platform/tests/css/css-ui/webkit-appearance-textarea-001.html32
-rw-r--r--testing/web-platform/tests/css/css-ui/webkit-appearance-textfield-001.html36
1579 files changed, 37596 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-ui/META.yml b/testing/web-platform/tests/css/css-ui/META.yml
new file mode 100644
index 0000000000..7ce4b54a22
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/META.yml
@@ -0,0 +1,6 @@
+spec: https://drafts.csswg.org/css-ui/
+suggested_reviewers:
+ - frivoal
+ - mrego
+ - plinss
+ - svgeesus
diff --git a/testing/web-platform/tests/css/css-ui/README.md b/testing/web-platform/tests/css/css-ui/README.md
new file mode 100644
index 0000000000..c5557e4cb4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/README.md
@@ -0,0 +1 @@
+To update the generated tests, run `wpt update-built --include css-ui`
diff --git a/testing/web-platform/tests/css/css-ui/accent-color-checkbox-checked-001-notref.html b/testing/web-platform/tests/css/css-ui/accent-color-checkbox-checked-001-notref.html
new file mode 100644
index 0000000000..9f9d73177a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/accent-color-checkbox-checked-001-notref.html
@@ -0,0 +1,2 @@
+<!doctype html>
+<input type=checkbox checked style="accent-color: blue">
diff --git a/testing/web-platform/tests/css/css-ui/accent-color-checkbox-checked-001.html b/testing/web-platform/tests/css/css-ui/accent-color-checkbox-checked-001.html
new file mode 100644
index 0000000000..46296e62e6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/accent-color-checkbox-checked-001.html
@@ -0,0 +1,9 @@
+<!doctype html>
+<title>Accent color changes colors of a checked checkbox</title>
+<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
+<link rel="author" title="Mozilla" href="https://mozilla.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#widget-accent">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1705605">
+<link rel="mismatch" href="accent-color-checkbox-checked-001-notref.html">
+
+<input type=checkbox checked style="accent-color: red">
diff --git a/testing/web-platform/tests/css/css-ui/accent-color-computed.html b/testing/web-platform/tests/css/css-ui/accent-color-computed.html
new file mode 100644
index 0000000000..d2d3241060
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/accent-color-computed.html
@@ -0,0 +1,24 @@
+<!doctype html>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#widget-accent">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+<style>
+ #outer { accent-color: red; color: black; }
+</style>
+<div id="outer">
+ <div id="target"></div>
+</div>
+<div id=noAccentColor></div>
+<script>
+test_computed_value('accent-color', 'initial', 'auto');
+test_computed_value('accent-color', 'inherit', 'rgb(255, 0, 0)');
+test_computed_value('accent-color', 'red', 'rgb(255, 0, 0)');
+test_computed_value('accent-color', 'blue', 'rgb(0, 0, 255)');
+test_computed_value('accent-color', 'auto', 'auto');
+test_computed_value('accent-color', 'currentcolor', 'rgb(0, 0, 0)');
+test_computed_value('accent-color', '#fff', 'rgb(255, 255, 255)');
+
+// When accent-color isn't specified, it should return 'auto'
+assert_equals(getComputedStyle(noAccentColor).accentColor, 'auto');
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/accent-color-invalidation-currentcolor-ref.html b/testing/web-platform/tests/css/css-ui/accent-color-invalidation-currentcolor-ref.html
new file mode 100644
index 0000000000..7138dcc021
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/accent-color-invalidation-currentcolor-ref.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<div style="accent-color: red">
+ The following checkbox should be red: <input type=checkbox checked>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/accent-color-invalidation-currentcolor.html b/testing/web-platform/tests/css/css-ui/accent-color-invalidation-currentcolor.html
new file mode 100644
index 0000000000..804e8544b8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/accent-color-invalidation-currentcolor.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<link rel=help href="https://bugs.chromium.org/p/chromium/issues/detail?id=1225661">
+<link rel=author href="mailto:jarhar@chromium.org">
+<link rel=match href="accent-color-invalidation-currentcolor-ref.html">
+
+<div style="accent-color: currentColor">
+ The following checkbox should be red: <input type=checkbox checked>
+</div>
+
+<script>
+async function rAF() {
+ return new Promise(resolve => requestAnimationFrame(resolve));
+}
+
+(async () => {
+ await rAF();
+ await rAF();
+ document.querySelector('input').style = 'color: red';
+ await rAF();
+ await rAF();
+ document.documentElement.classList.remove('reftest-wait');
+})();
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/accent-color-parent-currentcolor-ref.html b/testing/web-platform/tests/css/css-ui/accent-color-parent-currentcolor-ref.html
new file mode 100644
index 0000000000..3930038a42
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/accent-color-parent-currentcolor-ref.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<div style="accent-color: red; color: red">
+ The following checkbox should be red: <input type=checkbox checked>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/accent-color-parent-currentcolor.html b/testing/web-platform/tests/css/css-ui/accent-color-parent-currentcolor.html
new file mode 100644
index 0000000000..32240cfab7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/accent-color-parent-currentcolor.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<link rel=help href="https://bugs.chromium.org/p/chromium/issues/detail?id=1225661">
+<link rel=author href="mailto:jarhar@chromium.org">
+<link rel=match href="accent-color-parent-currentcolor-ref.html">
+
+<div style="accent-color: currentColor; color: red">
+ The following checkbox should be red: <input type=checkbox checked style="color:unset">
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/accent-color-parsing.html b/testing/web-platform/tests/css/css-ui/accent-color-parsing.html
new file mode 100644
index 0000000000..4877d89fa9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/accent-color-parsing.html
@@ -0,0 +1,20 @@
+<!doctype html>
+<title>Parsing of accent-color</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#widget-accent">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+<div id="target"></div>
+<script>
+test_valid_value('accent-color', 'initial');
+test_valid_value('accent-color', 'inherit');
+test_valid_value('accent-color', 'unset');
+test_valid_value('accent-color', 'revert');
+test_valid_value('accent-color', 'auto');
+test_valid_value('accent-color', 'red');
+test_valid_value('accent-color', 'blue');
+test_valid_value('accent-color', 'currentcolor');
+test_valid_value('accent-color', '#fff', 'rgb(255, 255, 255)');
+
+test_invalid_value('accent-color', 'auto auto');
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/accent-color-radio-checked-001-notref.html b/testing/web-platform/tests/css/css-ui/accent-color-radio-checked-001-notref.html
new file mode 100644
index 0000000000..63364f0efb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/accent-color-radio-checked-001-notref.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html>
+<input type=radio checked style="accent-color: blue">
diff --git a/testing/web-platform/tests/css/css-ui/accent-color-radio-checked-001.html b/testing/web-platform/tests/css/css-ui/accent-color-radio-checked-001.html
new file mode 100644
index 0000000000..64fb37064d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/accent-color-radio-checked-001.html
@@ -0,0 +1,7 @@
+<!DOCTYPE html>
+<title>Accent color changes colors of an checked radio</title>
+<link rel="author" href="mailto:masonf@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#widget-accent">
+<link rel="mismatch" href="accent-color-radio-checked-001-notref.html">
+
+<input type=radio checked style="accent-color: red">
diff --git a/testing/web-platform/tests/css/css-ui/accent-color-visited-ref.html b/testing/web-platform/tests/css/css-ui/accent-color-visited-ref.html
new file mode 100644
index 0000000000..e9c3cfad7c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/accent-color-visited-ref.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<a href="">
+ <input type=checkbox checked>
+</a>
diff --git a/testing/web-platform/tests/css/css-ui/accent-color-visited.html b/testing/web-platform/tests/css/css-ui/accent-color-visited.html
new file mode 100644
index 0000000000..48605d8f19
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/accent-color-visited.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<link rel="author" title="Joey Arhar" href="mailto:jarhar@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#widget-accent">
+<link rel="match" href="accent-color-visited-ref.html">
+
+<!-- :visited shouldn't apply to accent-color. -->
+
+<style>
+:visited {
+ accent-color: red;
+}
+</style>
+<a href="">
+ <input type=checkbox checked>
+</a>
diff --git a/testing/web-platform/tests/css/css-ui/animation/accent-color-interpolation.html b/testing/web-platform/tests/css/css-ui/animation/accent-color-interpolation.html
new file mode 100644
index 0000000000..20d87c4e52
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/animation/accent-color-interpolation.html
@@ -0,0 +1,106 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>accent-color interpolation</title>
+<link rel="author" title="Joey Arhar" href="mailto:jarhar@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#widget-accent">
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/interpolation-testcommon.js"></script>
+
+<style>
+.parent {
+ accent-color: blue;
+}
+.target {
+ display: inline-block;
+ font-size: 60pt;
+ accent-color: yellow;
+}
+.expected {
+ margin-right: 15px;
+}
+</style>
+
+<body contenteditable>
+ <template id="target-template">T</template>
+</body>
+
+<script>
+test_interpolation({
+ property: 'accent-color',
+ from: neutralKeyframe,
+ to: 'green',
+}, [
+ {at: -0.3, expect: 'rgb(255, 255, 0)'},
+ {at: 0, expect: 'rgb(255, 255, 0)'},
+ {at: 0.3, expect: 'rgb(179, 217, 0)'},
+ {at: 0.6, expect: 'rgb(102, 179, 0)'},
+ {at: 1, expect: 'rgb(0, 128, 0)'},
+ {at: 1.5, expect: 'rgb(0, 65, 0)'},
+]);
+
+test_no_interpolation({
+ property: 'accent-color',
+ from: 'initial',
+ to: 'green',
+});
+
+test_no_interpolation({
+ property: 'accent-color',
+ from: 'auto',
+ to: 'green',
+});
+
+test_interpolation({
+ property: 'accent-color',
+ from: 'currentColor',
+ to: 'green',
+}, [
+ {at: -0.3, expect: 'rgb(0, 0, 0)'},
+ {at: 0, expect: 'rgb(0, 0, 0)'},
+ {at: 0.3, expect: 'rgb(0, 38, 0)'},
+ {at: 0.6, expect: 'rgb(0, 77, 0)'},
+ {at: 1, expect: 'rgb(0, 128, 0)'},
+ {at: 1.5, expect: 'rgb(0, 192, 0)'},
+]);
+
+test_interpolation({
+ property: 'accent-color',
+ from: 'inherit',
+ to: 'green',
+}, [
+ {at: -0.3, expect: 'rgb(0, 0, 255)'},
+ {at: 0, expect: 'rgb(0, 0, 255)'},
+ {at: 0.3, expect: 'rgb(0, 38, 179)'},
+ {at: 0.6, expect: 'rgb(0, 77, 102)'},
+ {at: 1, expect: 'rgb(0, 128, 0)'},
+ {at: 1.5, expect: 'rgb(0, 192, 0)'},
+]);
+
+test_interpolation({
+ property: 'accent-color',
+ from: 'unset',
+ to: 'green',
+}, [
+ {at: -0.3, expect: 'rgb(0, 0, 255)'},
+ {at: 0, expect: 'rgb(0, 0, 255)'},
+ {at: 0.3, expect: 'rgb(0, 38, 179)'},
+ {at: 0.6, expect: 'rgb(0, 77, 102)'},
+ {at: 1, expect: 'rgb(0, 128, 0)'},
+ {at: 1.5, expect: 'rgb(0, 192, 0)'},
+]);
+
+test_interpolation({
+ property: 'accent-color',
+ from: 'black',
+ to: 'orange',
+}, [
+ {at: -0.3, expect: 'rgb(0, 0, 0)'},
+ {at: 0, expect: 'rgb(0, 0, 0)'},
+ {at: 0.3, expect: 'rgb(77, 50, 0)'},
+ {at: 0.6, expect: 'rgb(153, 99, 0)'},
+ {at: 1, expect: 'rgb(255, 165, 0)'},
+ {at: 1.5, expect: 'rgb(255, 248, 0)'},
+]);
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/animation/appearance-no-interpolation.html b/testing/web-platform/tests/css/css-ui/animation/appearance-no-interpolation.html
new file mode 100644
index 0000000000..5ddfcd4f8d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/animation/appearance-no-interpolation.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<link rel=author href="mailto:jarhar@chromium.org">
+<link rel=help href="https://github.com/w3c/csswg-drafts/issues/4441">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/interpolation-testcommon.js"></script>
+
+<body>
+<script>
+test_no_interpolation({
+ property: 'appearance',
+ from: 'initial',
+ to: 'none'
+});
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/animation/caret-color-composition.html b/testing/web-platform/tests/css/css-ui/animation/caret-color-composition.html
new file mode 100644
index 0000000000..6c69578677
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/animation/caret-color-composition.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>caret-color composition</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#propdef-caret-color">
+<meta name="assert" content="caret-color supports animation by computed value">
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/interpolation-testcommon.js"></script>
+
+<body>
+<style>
+.target {
+ display: inline-block;
+ font-size: 60pt;
+ color: rgb(50, 50, 50);
+}
+
+.expected {
+ margin-right: 15px;
+}
+</style>
+<body contenteditable>
+<template id="target-template">T</template>
+<script src="../interpolation/resources/interpolation-test.js"></script>
+<script>
+test_composition({
+ property: 'caret-color',
+ underlying: 'rgb(50, 50, 50)',
+ addFrom: 'rgb(100, 100, 100)',
+ addTo: 'rgb(200, 200, 200)',
+}, [
+ {at: -0.3, expect: 'rgb(120, 120, 120)'},
+ {at: 0, expect: 'rgb(150, 150, 150)'},
+ {at: 0.5, expect: 'rgb(200, 200, 200)'},
+ {at: 1, expect: 'rgb(250, 250, 250)'},
+ {at: 1.5, expect: 'rgb(255, 255, 255)'},
+]);
+
+test_composition({
+ property: 'caret-color',
+ underlying: 'auto',
+ addFrom: 'rgb(100, 100, 100)',
+ addTo: 'rgb(200, 200, 200)',
+}, [
+ {at: -0.3, expect: 'rgb(70, 70, 70)'},
+ {at: 0, expect: 'rgb(100, 100, 100)'},
+ {at: 0.5, expect: 'rgb(150, 150, 150)'},
+ {at: 1, expect: 'rgb(200, 200, 200)'},
+ {at: 1.5, expect: 'rgb(250, 250, 250)'},
+]);
+</script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/animation/caret-color-interpolation.html b/testing/web-platform/tests/css/css-ui/animation/caret-color-interpolation.html
new file mode 100644
index 0000000000..b3a4e30130
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/animation/caret-color-interpolation.html
@@ -0,0 +1,106 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>caret-color interpolation</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#propdef-caret-color">
+<meta name="assert" content="caret-color supports animation by computed value">
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/interpolation-testcommon.js"></script>
+
+<style>
+.parent {
+ caret-color: blue;
+}
+.target {
+ display: inline-block;
+ font-size: 60pt;
+ caret-color: yellow;
+}
+.expected {
+ margin-right: 15px;
+}
+</style>
+
+<body contenteditable>
+ <template id="target-template">T</template>
+</body>
+
+<script>
+test_interpolation({
+ property: 'caret-color',
+ from: neutralKeyframe,
+ to: 'green',
+}, [
+ {at: -0.3, expect: 'rgb(255, 255, 0)'},
+ {at: 0, expect: 'rgb(255, 255, 0)'},
+ {at: 0.3, expect: 'rgb(179, 217, 0)'},
+ {at: 0.6, expect: 'rgb(102, 179, 0)'},
+ {at: 1, expect: 'rgb(0, 128, 0)'},
+ {at: 1.5, expect: 'rgb(0, 65, 0)'},
+]);
+
+test_no_interpolation({
+ property: 'caret-color',
+ from: 'initial',
+ to: 'green',
+});
+
+test_no_interpolation({
+ property: 'caret-color',
+ from: 'auto',
+ to: 'green',
+});
+
+test_interpolation({
+ property: 'caret-color',
+ from: 'currentColor',
+ to: 'green',
+}, [
+ {at: -0.3, expect: 'rgb(0, 0, 0)'},
+ {at: 0, expect: 'rgb(0, 0, 0)'},
+ {at: 0.3, expect: 'rgb(0, 38, 0)'},
+ {at: 0.6, expect: 'rgb(0, 77, 0)'},
+ {at: 1, expect: 'rgb(0, 128, 0)'},
+ {at: 1.5, expect: 'rgb(0, 192, 0)'},
+]);
+
+test_interpolation({
+ property: 'caret-color',
+ from: 'inherit',
+ to: 'green',
+}, [
+ {at: -0.3, expect: 'rgb(0, 0, 255)'},
+ {at: 0, expect: 'rgb(0, 0, 255)'},
+ {at: 0.3, expect: 'rgb(0, 38, 179)'},
+ {at: 0.6, expect: 'rgb(0, 77, 102)'},
+ {at: 1, expect: 'rgb(0, 128, 0)'},
+ {at: 1.5, expect: 'rgb(0, 192, 0)'},
+]);
+
+test_interpolation({
+ property: 'caret-color',
+ from: 'unset',
+ to: 'green',
+}, [
+ {at: -0.3, expect: 'rgb(0, 0, 255)'},
+ {at: 0, expect: 'rgb(0, 0, 255)'},
+ {at: 0.3, expect: 'rgb(0, 38, 179)'},
+ {at: 0.6, expect: 'rgb(0, 77, 102)'},
+ {at: 1, expect: 'rgb(0, 128, 0)'},
+ {at: 1.5, expect: 'rgb(0, 192, 0)'},
+]);
+
+test_interpolation({
+ property: 'caret-color',
+ from: 'black',
+ to: 'orange',
+}, [
+ {at: -0.3, expect: 'rgb(0, 0, 0)'},
+ {at: 0, expect: 'rgb(0, 0, 0)'},
+ {at: 0.3, expect: 'rgb(77, 50, 0)'},
+ {at: 0.6, expect: 'rgb(153, 99, 0)'},
+ {at: 1, expect: 'rgb(255, 165, 0)'},
+ {at: 1.5, expect: 'rgb(255, 248, 0)'},
+]);
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/animation/cursor-no-interpolation.html b/testing/web-platform/tests/css/css-ui/animation/cursor-no-interpolation.html
new file mode 100644
index 0000000000..8d56dcb83c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/animation/cursor-no-interpolation.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<link rel=author href="mailto:jarhar@chromium.org">
+<link rel=help href="https://github.com/w3c/csswg-drafts/issues/4441">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/interpolation-testcommon.js"></script>
+
+<body>
+<script>
+test_no_interpolation({
+ property: 'cursor',
+ from: 'initial',
+ to: 'none'
+});
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/animation/outline-color-interpolation.html b/testing/web-platform/tests/css/css-ui/animation/outline-color-interpolation.html
new file mode 100644
index 0000000000..f49aa79a38
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/animation/outline-color-interpolation.html
@@ -0,0 +1,96 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>outline-color interpolation</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#outline-color">
+<meta name="assert" content="outline-color supports animation by computed value">
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/interpolation-testcommon.js"></script>
+
+<style>
+.parent {
+ outline-color: yellow;
+}
+.target {
+ width: 50px;
+ height: 50px;
+ background-color: black;
+ display: inline-block;
+ outline: 12px solid white;
+ margin: 12px 12px;
+ outline-color: blue;
+}
+.expected {
+ background-color: lime;
+}
+</style>
+
+<body></body>
+
+<script>
+test_interpolation({
+ property: 'outline-color',
+ from: neutralKeyframe,
+ to: 'green',
+}, [
+ {at: -0.3, expect: 'rgb(0, 0, 255)'},
+ {at: 0, expect: 'rgb(0, 0, 255)'},
+ {at: 0.3, expect: 'rgb(0, 38, 179)'},
+ {at: 0.6, expect: 'rgb(0, 77, 102)'},
+ {at: 1, expect: 'rgb(0, 128, 0)'},
+ {at: 1.5, expect: 'rgb(0, 192, 0)'},
+]);
+
+test_interpolation({
+ property: 'outline-color',
+ from: 'initial',
+ to: 'green',
+}, [
+ {at: -0.3, expect: 'rgb(0, 0, 0)'},
+ {at: 0, expect: 'rgb(0, 0, 0)'},
+ {at: 0.3, expect: 'rgb(0, 38, 0)'},
+ {at: 0.6, expect: 'rgb(0, 77, 0)'},
+ {at: 1, expect: 'rgb(0, 128, 0)'},
+ {at: 1.5, expect: 'rgb(0, 192, 0)'},
+]);
+
+test_interpolation({
+ property: 'outline-color',
+ from: 'inherit',
+ to: 'green',
+}, [
+ {at: -0.3, expect: 'rgb(255, 255, 0)'},
+ {at: 0, expect: 'rgb(255, 255, 0)'},
+ {at: 0.3, expect: 'rgb(179, 217, 0)'},
+ {at: 0.6, expect: 'rgb(102, 179, 0)'},
+ {at: 1, expect: 'rgb(0, 128, 0)'},
+ {at: 1.5, expect: 'rgb(0, 65, 0)'},
+]);
+
+test_interpolation({
+ property: 'outline-color',
+ from: 'unset',
+ to: 'green',
+}, [
+ {at: -0.3, expect: 'rgb(0, 0, 0)'},
+ {at: 0, expect: 'rgb(0, 0, 0)'},
+ {at: 0.3, expect: 'rgb(0, 38, 0)'},
+ {at: 0.6, expect: 'rgb(0, 77, 0)'},
+ {at: 1, expect: 'rgb(0, 128, 0)'},
+ {at: 1.5, expect: 'rgb(0, 192, 0)'},
+]);
+
+test_interpolation({
+ property: 'outline-color',
+ from: 'white',
+ to: 'orange'
+}, [
+ {at: -0.3, expect: 'white'},
+ {at: 0, expect: 'white'},
+ {at: 0.3, expect: 'rgb(255, 228, 179)'},
+ {at: 0.6, expect: 'rgb(255, 201, 102)'},
+ {at: 1, expect: 'orange'},
+ {at: 1.5, expect: 'rgb(255, 120, 0)'},
+]);
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/animation/outline-offset-composition.html b/testing/web-platform/tests/css/css-ui/animation/outline-offset-composition.html
new file mode 100644
index 0000000000..984a63fdc3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/animation/outline-offset-composition.html
@@ -0,0 +1,65 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>outline-offset composition</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#outline-offset">
+<meta name="assert" content="outline-offset supports animation by computed value">
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/interpolation-testcommon.js"></script>
+
+<body>
+<script>
+test_composition({
+ property: 'outline-offset',
+ underlying: '50px',
+ addFrom: '100px',
+ addTo: '200px',
+}, [
+ {at: -0.3, expect: '120px'},
+ {at: 0, expect: '150px'},
+ {at: 0.5, expect: '200px'},
+ {at: 1, expect: '250px'},
+ {at: 1.5, expect: '300px'},
+]);
+
+test_composition({
+ property: 'outline-offset',
+ underlying: '100px',
+ addFrom: '10px',
+ addTo: '2px',
+}, [
+ {at: -0.5, expect: '114px'},
+ {at: 0, expect: '110px'},
+ {at: 0.5, expect: '106px'},
+ {at: 1, expect: '102px'},
+ {at: 1.5, expect: '98px'},
+]);
+
+test_composition({
+ property: 'outline-offset',
+ underlying: '10em',
+ addFrom: '100px',
+ addTo: '20em',
+}, [
+ {at: -0.3, expect: 'calc(130px + 4em)'},
+ {at: 0, expect: 'calc(100px + 10em)'},
+ {at: 0.5, expect: 'calc(50px + 20em)'},
+ {at: 1, expect: '30em'},
+ {at: 1.5, expect: 'calc(-50px + 40em)'},
+]);
+
+test_composition({
+ property: 'outline-offset',
+ underlying: '50px',
+ addFrom: '100px',
+ replaceTo: '200px',
+}, [
+ {at: -0.3, expect: '135px'},
+ {at: 0, expect: '150px'},
+ {at: 0.5, expect: '175px'},
+ {at: 1, expect: '200px'},
+ {at: 1.5, expect: '225px'},
+]);
+</script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/animation/outline-offset-interpolation.html b/testing/web-platform/tests/css/css-ui/animation/outline-offset-interpolation.html
new file mode 100644
index 0000000000..46c1c51c6e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/animation/outline-offset-interpolation.html
@@ -0,0 +1,98 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>outline-offset interpolation</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#outline-offset">
+<meta name="assert" content="outline-offset supports animation by computed value">
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/interpolation-testcommon.js"></script>
+
+<style>
+.parent {
+ outline: solid 0px;
+ outline-offset: 30px;
+}
+.target {
+ width: 50px;
+ height: 50px;
+ background-color: black;
+ display: inline-block;
+ margin: 40px 0px 0px 40px;
+ outline: 4px solid orange;
+ outline-offset: 10px;
+}
+.expected {
+ background-color: green;
+ margin-right: 18px;
+}
+</style>
+
+<body></body>
+
+<script>
+test_interpolation({
+ property: 'outline-offset',
+ from: neutralKeyframe,
+ to: '20px',
+}, [
+ {at: -0.3, expect: '7px'},
+ {at: 0, expect: '10px'},
+ {at: 0.3, expect: '13px'},
+ {at: 0.6, expect: '16px'},
+ {at: 1, expect: '20px'},
+ {at: 1.5, expect: '25px'},
+]);
+
+test_interpolation({
+ property: 'outline-offset',
+ from: 'initial',
+ to: '20px',
+}, [
+ {at: -0.3, expect: '-6px'},
+ {at: 0, expect: '0px'},
+ {at: 0.3, expect: '6px'},
+ {at: 0.6, expect: '12px'},
+ {at: 1, expect: '20px'},
+ {at: 1.5, expect: '30px'},
+]);
+
+test_interpolation({
+ property: 'outline-offset',
+ from: 'inherit',
+ to: '20px',
+}, [
+ {at: -0.3, expect: '33px'},
+ {at: 0, expect: '30px'},
+ {at: 0.3, expect: '27px'},
+ {at: 0.6, expect: '24px'},
+ {at: 1, expect: '20px'},
+ {at: 1.5, expect: '15px'},
+]);
+
+test_interpolation({
+ property: 'outline-offset',
+ from: 'unset',
+ to: '20px',
+}, [
+ {at: -0.3, expect: '-6px'},
+ {at: 0, expect: '0px'},
+ {at: 0.3, expect: '6px'},
+ {at: 0.6, expect: '12px'},
+ {at: 1, expect: '20px'},
+ {at: 1.5, expect: '30px'},
+]);
+
+test_interpolation({
+ property: 'outline-offset',
+ from: '-5px',
+ to: '5px',
+}, [
+ {at: -0.3, expect: '-8px'},
+ {at: 0, expect: '-5px'},
+ {at: 0.3, expect: '-2px'},
+ {at: 0.6, expect: '1px'},
+ {at: 1, expect: '5px'},
+ {at: 1.5, expect: '10px'},
+]);
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/animation/outline-width-composition.html b/testing/web-platform/tests/css/css-ui/animation/outline-width-composition.html
new file mode 100644
index 0000000000..b770feda61
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/animation/outline-width-composition.html
@@ -0,0 +1,85 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>outline-width composition</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#outline-width">
+<meta name="assert" content="outline-width supports animation by computed value">
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/interpolation-testcommon.js"></script>
+
+<body>
+<style>
+.target {
+ /* If outline-style is none (the default), the computed style of outline-width is 0. */
+ outline-style: solid;
+}
+</style>
+<script>
+test_composition({
+ property: 'outline-width',
+ underlying: '50px',
+ addFrom: '100px',
+ addTo: '200px',
+}, [
+ {at: -0.3, expect: '120px'},
+ {at: 0, expect: '150px'},
+ {at: 0.5, expect: '200px'},
+ {at: 1, expect: '250px'},
+ {at: 1.5, expect: '300px'},
+]);
+
+test_composition({
+ property: 'outline-width',
+ underlying: '100px',
+ addFrom: '10px',
+ addTo: '2px',
+}, [
+ {at: -0.5, expect: '114px'},
+ {at: 0, expect: '110px'},
+ {at: 0.5, expect: '106px'},
+ {at: 1, expect: '102px'},
+ {at: 1.5, expect: '98px'}, // Value clamping should happen after composition.
+]);
+
+test_composition({
+ property: 'outline-width',
+ underlying: '10em',
+ addFrom: '100px',
+ addTo: '20em',
+}, [
+ {at: -0.3, expect: 'calc(130px + 4em)'},
+ {at: 0, expect: 'calc(100px + 10em)'},
+ {at: 0.5, expect: 'calc(50px + 20em)'},
+ {at: 1, expect: '30em'},
+ {at: 1.5, expect: 'calc(-50px + 40em)'},
+]);
+
+test_composition({
+ property: 'outline-width',
+ underlying: '50px',
+ addFrom: '100px',
+ replaceTo: '200px',
+}, [
+ {at: -0.3, expect: '135px'},
+ {at: 0, expect: '150px'},
+ {at: 0.5, expect: '175px'},
+ {at: 1, expect: '200px'},
+ {at: 1.5, expect: '225px'},
+]);
+
+test_composition({
+ property: 'outline-width',
+ underlying: 'thick', // 5px
+ addFrom: '11px',
+ addTo: 'thin', // 1px
+}, [
+ {at: -0.3, expect: '19px'},
+ {at: 0, expect: '16px'},
+ {at: 0.5, expect: '11px'},
+ {at: 1, expect: '6px'},
+ {at: 1.5, expect: '1px'},
+ {at: 2, expect: '0px'}, // CSS outline-width can't be negative.
+]);
+</script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/animation/outline-width-interpolation.html b/testing/web-platform/tests/css/css-ui/animation/outline-width-interpolation.html
new file mode 100644
index 0000000000..a46907a169
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/animation/outline-width-interpolation.html
@@ -0,0 +1,120 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>outline-width interpolation</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#outline-width">
+<meta name="assert" content="outline-width supports animation by computed value">
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/interpolation-testcommon.js"></script>
+
+<style>
+.parent {
+ outline: solid transparent;
+ outline-width: 30px;
+}
+.target {
+ width: 50px;
+ height: 50px;
+ background-color: black;
+ display: inline-block;
+ margin: 18px;
+ outline: solid orange;
+ outline-width: 10px;
+ opacity: 0.5;
+}
+.expected {
+ background-color: green;
+}
+</style>
+
+<body></body>
+
+<script>
+// NOTE: The below tests make assumptions about the values of medium (for unset
+// and initial) and thick, namely that:
+// * medium=3px
+// * thick=3px
+//
+// A better version of these tests would dynamically generate the expected values
+// by querying the computed style from the UA.
+
+test_interpolation({
+ property: 'outline-width',
+ from: neutralKeyframe,
+ to: '20px',
+}, [
+ {at: -0.3, expect: '7px'},
+ {at: 0, expect: '10px'},
+ {at: 0.3, expect: '13px'},
+ {at: 0.6, expect: '16px'},
+ {at: 1, expect: '20px'},
+ {at: 1.5, expect: '25px'},
+]);
+
+test_interpolation({
+ property: 'outline-width',
+ from: 'initial',
+ to: '23px',
+}, [
+ {at: -0.3, expect: '0px'},
+ {at: 0, expect: '3px'},
+ {at: 0.3, expect: '9px'},
+ {at: 0.6, expect: '15px'},
+ {at: 1, expect: '23px'},
+ {at: 1.5, expect: '33px'},
+]);
+
+test_interpolation({
+ property: 'outline-width',
+ from: 'inherit',
+ to: '20px',
+}, [
+ {at: -0.3, expect: '33px'},
+ {at: 0, expect: '30px'},
+ {at: 0.3, expect: '27px'},
+ {at: 0.6, expect: '24px'},
+ {at: 1, expect: '20px'},
+ {at: 1.5, expect: '15px'},
+]);
+
+test_interpolation({
+ property: 'outline-width',
+ from: 'unset',
+ to: '23px',
+}, [
+ {at: -0.3, expect: '0px'},
+ {at: 0, expect: '3px'},
+ {at: 0.3, expect: '9px'},
+ {at: 0.6, expect: '15px'},
+ {at: 1, expect: '23px'},
+ {at: 1.5, expect: '33px'},
+]);
+
+test_interpolation({
+ property: 'outline-width',
+ from: '0px',
+ to: '10px',
+}, [
+ {at: -0.3, expect: '0px'}, // CSS outline-width can't be negative.
+ {at: 0, expect: '0px'},
+ {at: 0.3, expect: '3px'},
+ {at: 0.6, expect: '6px'},
+ {at: 1, expect: '10px'},
+ {at: 1.5, expect: '15px'}
+]);
+
+test_interpolation({
+ property: 'outline-width',
+ from: 'thick',
+ to: '15px',
+}, [
+ {at: -2, expect: '0px'}, // CSS outline-width can't be negative.
+ {at: -0.3, expect: '2px'},
+ {at: 0, expect: '5px'},
+ {at: 0.3, expect: '8px'},
+ {at: 0.6, expect: '11px'},
+ {at: 1, expect: '15px'},
+ {at: 1.5, expect: '20px'}
+]);
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-auto-001.html b/testing/web-platform/tests/css/css-ui/appearance-auto-001.html
new file mode 100644
index 0000000000..deef1c5d0b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-auto-001.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: appearance: auto</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="auto is supported.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * { appearance: none; appearance: auto; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-auto-input-non-widget-001-ref.html b/testing/web-platform/tests/css/css-ui/appearance-auto-input-non-widget-001-ref.html
new file mode 100644
index 0000000000..ffbf612615
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-auto-input-non-widget-001-ref.html
@@ -0,0 +1,6 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Reference: appearance: auto on non-widget input elements</title>
+<input type="hidden" value="abc">
+<input type="image" value="def">
+<input type="file">
diff --git a/testing/web-platform/tests/css/css-ui/appearance-auto-input-non-widget-001.html b/testing/web-platform/tests/css/css-ui/appearance-auto-input-non-widget-001.html
new file mode 100644
index 0000000000..9e717ab872
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-auto-input-non-widget-001.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: appearance: auto on non-widget input elements</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="The default widget type for these elements is none.">
+<link rel="match" href="appearance-auto-input-non-widget-001-ref.html">
+<style>
+input { appearance: auto; }
+</style>
+<input type="hidden" value="abc">
+<input type="image" value="def">
+<input type="file">
diff --git a/testing/web-platform/tests/css/css-ui/appearance-auto-non-html-namespace-001.html b/testing/web-platform/tests/css/css-ui/appearance-auto-non-html-namespace-001.html
new file mode 100644
index 0000000000..892e0da63b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-auto-non-html-namespace-001.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: appearance: auto on elements in non-HTML namespace</title>
+<link rel="match" href="nothing-below-ref.html">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="appearance: auto should have no effect on non-HTML elements.">
+<style>
+ div * { appearance: auto; display: inline-block; width: 1em; height: 1em; }
+</style>
+<p>There should be nothing below:</p>
+<div id=div></div>
+<script>
+for (var tagName of ['button', 'input', 'meter', 'progress', 'select', 'textarea']) {
+ div.appendChild(document.createElementNS('not-html', tagName));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-auto-ref.html b/testing/web-platform/tests/css/css-ui/appearance-auto-ref.html
new file mode 100644
index 0000000000..5c5cdb42e7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-auto-ref.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Reference: appearance: auto</title>
+<style>
+ #container { width: 500px; }
+ #container > :not(a) { appearance: auto; -webkit-appearance: auto; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-button-001.html b/testing/web-platform/tests/css/css-ui/appearance-button-001.html
new file mode 100644
index 0000000000..317f56b18a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-button-001.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: appearance: button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="button is an alias to auto.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * { appearance: none; appearance: button; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-checkbox-001.html b/testing/web-platform/tests/css/css-ui/appearance-checkbox-001.html
new file mode 100644
index 0000000000..54ebef94f2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-checkbox-001.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: appearance: checkbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="checkbox is an alias to auto.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * { appearance: none; appearance: checkbox; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-cssom-001.html b/testing/web-platform/tests/css/css-ui/appearance-cssom-001.html
new file mode 100644
index 0000000000..36402da51c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-cssom-001.html
@@ -0,0 +1,259 @@
+<!doctype html>
+<title>CSS Basic User Interface Test: appearance CSSOM</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="CSSOM for the appearance/-webkit-appearance property is correct.">
+<meta name="variant" content="?include=Invalid">
+<meta name="variant" content="?exclude=Invalid">
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script src="/common/subset-tests-by-key.js"></script>
+<button id=button>Test</button>
+<script>
+ const button = document.getElementById('button');
+ const values = [
+ "none",
+ "auto",
+ // <compat-special>
+ "textfield",
+ "menulist-button",
+ ];
+ // <compat-auto>
+ const compat_values = [
+ "button",
+ "checkbox",
+ "listbox",
+ "menulist",
+ "meter",
+ "progress-bar",
+ "radio",
+ "searchfield",
+ "textarea",
+ "slider-horizontal",
+ "push-button",
+ "square-button",
+ ];
+ const invalid_values = [
+ "bogus-button",
+ "attachment",
+ "button-bevel",
+ "borderless-attachment",
+ "button-arrow-down",
+ "button-arrow-next",
+ "button-arrow-previous",
+ "button-arrow-up",
+ "button-focus",
+ "caps-lock-indicator",
+ "caret",
+ "checkbox-container",
+ "checkbox-label",
+ "checkmenuitem",
+ "color-well",
+ "continuous-capacity-level-indicator",
+ "default-button",
+ "discrete-capacity-level-indicator",
+ "dualbutton",
+ "groupbox",
+ "image-controls-button",
+ "inner-spin-button",
+ "list-button",
+ "listitem",
+ "media-controls-background",
+ "media-controls-dark-bar-background",
+ "media-controls-fullscreen-background",
+ "media-controls-light-bar-background",
+ "media-current-time-display",
+ "media-enter-fullscreen-button",
+ "media-exit-fullscreen-button",
+ "media-fullscreen-volume-slider",
+ "media-fullscreen-volume-slider-thumb",
+ "media-mute-button",
+ "media-overlay-play-button",
+ "media-play-button",
+ "media-return-to-realtime-button",
+ "media-rewind-button",
+ "media-seek-back-button",
+ "media-seek-forward-button",
+ "media-slider",
+ "media-sliderthumb",
+ "media-time-remaining-display",
+ "media-toggle-closed-captions-button",
+ "media-volume-slider",
+ "media-volume-slider-container",
+ "media-volume-slider-mute-button",
+ "media-volume-sliderthumb",
+ "menuarrow",
+ "menubar",
+ "menucheckbox",
+ "menuimage",
+ "menuitem",
+ "menuitemtext",
+ "menulist-text",
+ "menulist-textfield",
+ "menupopup",
+ "menuradio",
+ "menuseparator",
+ "meterbar",
+ "meterchunk",
+ "number-input",
+ "progress-bar-value",
+ "progressbar",
+ "progressbar-vertical",
+ "progresschunk",
+ "progresschunk-vertical",
+ "radio-container",
+ "radio-label",
+ "radiomenuitem",
+ "range",
+ "range-thumb",
+ "rating-level-indicator",
+ "relevancy-level-indicator",
+ "resizer",
+ "resizerpanel",
+ "scale-horizontal",
+ "scale-vertical",
+ "scalethumb-horizontal",
+ "scalethumb-vertical",
+ "scalethumbend",
+ "scalethumbstart",
+ "scalethumbtick",
+ "scrollbarbutton-down",
+ "scrollbarbutton-left",
+ "scrollbarbutton-right",
+ "scrollbarbutton-up",
+ "scrollbarthumb-horizontal",
+ "scrollbarthumb-vertical",
+ "scrollbartrack-horizontal",
+ "scrollbartrack-vertical",
+ "searchfield-cancel-button",
+ "searchfield-decoration",
+ "searchfield-results-button",
+ "searchfield-results-decoration",
+ "separator",
+ "sheet",
+ "slider-vertical",
+ "sliderthumb-horizontal",
+ "sliderthumb-vertical",
+ "snapshotted-plugin-overlay",
+ "spinner",
+ "spinner-downbutton",
+ "spinner-textfield",
+ "spinner-upbutton",
+ "splitter",
+ "statusbar",
+ "statusbarpanel",
+ "tab",
+ "tab-scroll-arrow-back",
+ "tab-scroll-arrow-forward",
+ "tabpanel",
+ "tabpanels",
+ "textfield-multiline",
+ "toolbar",
+ "toolbarbutton",
+ "toolbarbutton-dropdown",
+ "toolbargripper",
+ "toolbox",
+ "tooltip",
+ "treeheader",
+ "treeheadercell",
+ "treeheadersortarrow",
+ "treeitem",
+ "treeline",
+ "treetwisty",
+ "treetwistyopen",
+ "treeview",
+ "-apple-pay-button",
+ "-moz-win-borderless-glass",
+ "-moz-win-browsertabbar-toolbox",
+ "-moz-win-communications-toolbox",
+ "-moz-win-communicationstext",
+ "-moz-win-exclude-glass",
+ "-moz-win-glass",
+ "-moz-win-media-toolbox",
+ "-moz-window-button-box",
+ "-moz-window-button-box-maximized",
+ "-moz-window-button-close",
+ "-moz-window-button-maximize",
+ "-moz-window-button-minimize",
+ "-moz-window-button-restore",
+ "-moz-window-frame-bottom",
+ "-moz-window-frame-left",
+ "-moz-window-frame-right",
+ "-moz-window-titlebar",
+ "-moz-window-titlebar-maximized",
+ ];
+ const initial_appearance = getComputedStyle(button).appearance;
+ function assert_style_for_prop(style, prop, value) {
+ let values = Array.isArray(value) ? value : [value];
+ if (prop === '-webkit-appearance') {
+ assert_in_array(style.WebkitAppearance, values, 'style.WebkitAppearance (uppercase W)');
+ assert_in_array(style.webkitAppearance, values, 'style.webkitAppearance (lowercase w)');
+ } else {
+ assert_in_array(style.appearance, values, 'style.appearance');
+ }
+ assert_in_array(style.getPropertyValue(prop), values, `getPropertyValue(${prop})`);
+ }
+ for (const prop of ["-webkit-appearance", "appearance"]) {
+ for (const value of values) {
+ subsetTestByKey(`Values`, test, () => {
+ button.removeAttribute('style');
+ button.style.setProperty(prop, value);
+ assert_style_for_prop(button.style, prop, value);
+ const style = getComputedStyle(button);
+ assert_style_for_prop(style, prop, value);
+ button.style.setProperty('background-color', 'black');
+ assert_style_for_prop(style, prop, value,
+ 'Computed value should be the specified value');
+ }, `${prop}: ${value}`);
+ }
+
+ for (const value of compat_values) {
+ subsetTestByKey(`Compat`, test, () => {
+ button.removeAttribute('style');
+ button.style.setProperty(prop, value);
+ assert_style_for_prop(button.style, prop, [value, ""]);
+ const style = getComputedStyle(button);
+ assert_style_for_prop(style, prop, [value, "auto"]);
+ button.style.setProperty('background-color', 'black');
+ assert_style_for_prop(style, prop, [value, "auto"],
+ 'Computed value should be the specified value or auto if not supported');
+ }, `${prop}: ${value} (compat)`);
+ }
+
+ for (const value of invalid_values) {
+ subsetTestByKey(`Invalid`, test, () => {
+ button.removeAttribute('style');
+ button.style.setProperty(prop, value);
+ assert_style_for_prop(button.style, prop, "");
+ const style = getComputedStyle(button);
+ assert_style_for_prop(style, prop, initial_appearance);
+ }, `${prop}: ${value} (invalid)`);
+ }
+ }
+
+ for (const prefix of [
+ "-ms-",
+ "mso-",
+ "-o-",
+ "-xv-",
+ "-atsc-",
+ "-wap-",
+ "-khtml-",
+ "-konq-",
+ "-apple-",
+ "prince-",
+ "-ah-",
+ "-hp-",
+ "-ro-",
+ "-rim-",
+ "-tc-",
+ ]) {
+ const prop = `${prefix}appearance`;
+ subsetTestByKey(`Prefixes`, test, () => {
+ button.removeAttribute('style');
+ button.style.setProperty(prop, 'none');
+ assert_equals(button.style.getPropertyValue(prop), '');
+ const style = getComputedStyle(button);
+ assert_equals(style.getPropertyValue(prop), '');
+ }, `${prop} (should not be supported)`);
+ }
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-initial-value-001.html b/testing/web-platform/tests/css/css-ui/appearance-initial-value-001.html
new file mode 100644
index 0000000000..6e7d300267
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-initial-value-001.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: appearance and -webkit-appearance</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="The appearance and -webkit-appearance properties are supported.">
+<meta name="assert" content="Initial value is none.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+ #appearance { appearance: button; }
+ #-webkit-appearance { -webkit-appearance: button; }
+</style>
+<div id="appearance"></div>
+<div id="-webkit-appearance"></div>
+<div id="initial"></div>
+<script>
+for (const prop of ['appearance', '-webkit-appearance']) {
+ test(() => {
+ const actual = getComputedStyle(document.getElementById(prop)).getPropertyValue(prop);
+ assert_equals(actual, 'button');
+ }, `support for ${prop}`);
+
+ test(() => {
+ const actual = getComputedStyle(document.getElementById('initial')).getPropertyValue(prop);
+ assert_equals(actual, 'none');
+ }, `initial value for ${prop}`);
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-listbox-001.html b/testing/web-platform/tests/css/css-ui/appearance-listbox-001.html
new file mode 100644
index 0000000000..b391754b74
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-listbox-001.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: appearance: listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="listbox is an alias to auto.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * { appearance: none; appearance: listbox; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-menulist-001.html b/testing/web-platform/tests/css/css-ui/appearance-menulist-001.html
new file mode 100644
index 0000000000..b4586870e3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-menulist-001.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: appearance: menulist</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="menulist is an alias to auto.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * { appearance: none; appearance: menulist; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-menulist-button-001.html b/testing/web-platform/tests/css/css-ui/appearance-menulist-button-001.html
new file mode 100644
index 0000000000..a170eb3126
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-menulist-button-001.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: appearance: menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="menulist-button is an alias to auto except on drop-down select.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > *:not(#drop-down-select) { appearance: none; appearance: menulist-button; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select id="drop-down-select"><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-menulist-button-002.tentative.html b/testing/web-platform/tests/css/css-ui/appearance-menulist-button-002.tentative.html
new file mode 100644
index 0000000000..2579450623
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-menulist-button-002.tentative.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: appearance: menulist-button on drop-down select</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="menulist-button is NOT an alias to auto on drop-down select.">
+<link rel="mismatch" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #drop-down-select { appearance: none; appearance: menulist-button; }
+</style>
+<!--
+ Test marked as tentative since although css-ui says:
+
+ For drop-down box select elements, the element is rendered as a drop-down
+ box, including a "drop-down button", but not necessarily using a native
+ control of the host operating system. For such elements, CSS properties
+ such as color, background-color, and border (that can be disregarded for
+ auto) should not be disregarded.
+
+ there is no requirement that this rendering is any different from the
+ automatic widget appearance of a drop-down select.
+ -->
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select id="drop-down-select"><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-meter-001.html b/testing/web-platform/tests/css/css-ui/appearance-meter-001.html
new file mode 100644
index 0000000000..da6f1ffa6c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-meter-001.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: appearance: meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="meter is an alias to auto.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * { appearance: none; appearance: meter; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-parsing.html b/testing/web-platform/tests/css/css-ui/appearance-parsing.html
new file mode 100644
index 0000000000..8d6973231c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-parsing.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <meta charset="utf-8">
+ <title>Parsing of `appearance`</title>
+ <link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+ <script src="/resources/testharness.js"></script>
+ <script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<script>
+test(function() {
+ var input = document.createElement('input');
+ input.setAttribute('style', 'appearance: none;');
+
+ assert_equals(input.style.getPropertyValue('appearance'), 'none');
+}, 'parsing via attribute change steps of CSS declaration block\'s owner node');
+
+test(function() {
+ var input = document.createElement('input');
+ input.style.cssText = 'appearance: none;';
+
+ assert_equals(input.style.getPropertyValue('appearance'), 'none');
+}, 'parsing via modification of cssText');
+
+test(function(t) {
+ var style = document.createElement('style');
+ style.appendChild(
+ document.createTextNode('#foo { appearance: none; }')
+ );
+ document.body.appendChild(style);
+ t.add_cleanup(function() {
+ document.body.removeChild(style);
+ });
+
+ assert_equals(style.sheet.cssRules.length, 1);
+ assert_equals(
+ style.sheet.cssRules[0].style.getPropertyValue('appearance'),
+ 'none'
+ );
+}, 'parsing via creation of CSS declaration block');
+</script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-progress-bar-001.html b/testing/web-platform/tests/css/css-ui/appearance-progress-bar-001.html
new file mode 100644
index 0000000000..1573f69911
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-progress-bar-001.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: appearance: progress-bar</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="progress-bar is an alias to auto.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * { appearance: none; appearance: progress-bar; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-progress-bar-002-ref.html b/testing/web-platform/tests/css/css-ui/appearance-progress-bar-002-ref.html
new file mode 100644
index 0000000000..d243f0c75c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-progress-bar-002-ref.html
@@ -0,0 +1,4 @@
+<!doctype html>
+<title>CSS Test Reference</title>
+<progress style="appearance:auto" value="0.5">
+<progress style="appearance:none" value="0.5">
diff --git a/testing/web-platform/tests/css/css-ui/appearance-progress-bar-002.html b/testing/web-platform/tests/css/css-ui/appearance-progress-bar-002.html
new file mode 100644
index 0000000000..b04af84ba1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-progress-bar-002.html
@@ -0,0 +1,16 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: progress dynamic appearance</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<link rel="match" href="appearance-progress-bar-002-ref.html">
+<style>
+ #progress1 { appearance: none }
+ #progress2 { appearance: auto }
+</style>
+<progress id="progress1" value="0.5">
+<progress id="progress2" value="0.5">
+<script>
+ document.body.offsetTop;
+ progress1.style.appearance = "auto";
+ progress2.style.appearance = "none";
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-property.html b/testing/web-platform/tests/css/css-ui/appearance-property.html
new file mode 100644
index 0000000000..53b98ba605
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-property.html
@@ -0,0 +1,56 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <meta charset="utf-8">
+ <title>Property references to `appearance`</title>
+ <link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+ <script src="/resources/testharness.js"></script>
+ <script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<script>
+function create(initialValue) {
+ var style = document.createElement('input').style;
+
+ style.setProperty('appearance', initialValue);
+
+ return style;
+}
+
+test(function() {
+ var style = create('');
+
+ style.setProperty('appearance', 'none');
+
+ assert_equals(style.appearance, 'none');
+}, 'setProperty');
+
+test(function() {
+ var style = create('none');
+
+ style.removeProperty('appearance');
+
+ assert_equals(style.appearance, '');
+}, 'removeProperty');
+
+test(function() {
+ var style = create('');
+
+ style['appearance'] = 'none';
+
+ assert_equals(style.appearance, 'none');
+}, 'property assignment');
+
+test(function() {
+ var style = create('none');
+
+ assert_equals(style.getPropertyValue('appearance'), 'none');
+}, 'getPropertyValue');
+
+test(function() {
+ var style = create('none');
+
+ assert_equals(style['appearance'], 'none');
+}, 'property access');
+</script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-push-button-001.html b/testing/web-platform/tests/css/css-ui/appearance-push-button-001.html
new file mode 100644
index 0000000000..3aecbb0798
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-push-button-001.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: appearance: push-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="push-button is an alias to auto.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * { appearance: none; appearance: push-button; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-radio-001.html b/testing/web-platform/tests/css/css-ui/appearance-radio-001.html
new file mode 100644
index 0000000000..5a64ba7b01
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-radio-001.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: appearance: radio</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="radio is an alias to auto.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * { appearance: none; appearance: radio; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-revert-001.tentative.html b/testing/web-platform/tests/css/css-ui/appearance-revert-001.tentative.html
new file mode 100644
index 0000000000..eb94e6feed
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-revert-001.tentative.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<link rel="help" href="https://github.com/w3c/csswg-drafts/issues/4777#issuecomment-597755164">
+<link rel="match" href="appearance-revert-ref.html">
+<style>
+ div > * {
+ background-color: red;
+ border-color: red;
+ all: revert;
+ }
+</style>
+<div><input type="text" value="input-text"></div>
+<div><input type="search" value="input-search"></div>
+<div><textarea>textarea</textarea></div>
+<div><input type="button" value="input-button"></div>
+<div><input type="submit" value="input-submit"></div>
+<div><input type="reset" value="input-reset"></div>
+<div><input type="range"></div>
+<div><input type="checkbox"></div>
+<div><input type="radio"></div>
+<div><input type="color"></div>
+<div><select><option>select</option></select></div>
+<div><select multiple><option>select-multiple</option></select></div>
+<div><meter value=0.5></meter></div>
+<div><progress value=0.5></progress></div>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-revert-ref.html b/testing/web-platform/tests/css/css-ui/appearance-revert-ref.html
new file mode 100644
index 0000000000..26aa6e8719
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-revert-ref.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<div><input type="text" value="input-text"></div>
+<div><input type="search" value="input-search"></div>
+<div><textarea>textarea</textarea></div>
+<div><input type="button" value="input-button"></div>
+<div><input type="submit" value="input-submit"></div>
+<div><input type="reset" value="input-reset"></div>
+<div><input type="range"></div>
+<div><input type="checkbox"></div>
+<div><input type="radio"></div>
+<div><input type="color"></div>
+<div><select><option>select</option></select></div>
+<div><select multiple><option>select-multiple</option></select></div>
+<div><meter value=0.5></meter></div>
+<div><progress value=0.5></progress></div>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-searchfield-001.html b/testing/web-platform/tests/css/css-ui/appearance-searchfield-001.html
new file mode 100644
index 0000000000..7874141155
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-searchfield-001.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: appearance: searchfield</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="searchfield is an alias to auto.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * { appearance: none; appearance: searchfield; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-serialization.html b/testing/web-platform/tests/css/css-ui/appearance-serialization.html
new file mode 100644
index 0000000000..ed968afee6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-serialization.html
@@ -0,0 +1,48 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <meta charset="utf-8">
+ <title>Serialization of `appearance`</title>
+ <link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+ <script src="/resources/testharness.js"></script>
+ <script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<script>
+test(function() {
+ var input = document.createElement('input');
+ input.style.setProperty('appearance', 'none');
+
+ assert_equals(input.style.cssText, 'appearance: none;');
+}, 'serialization via CSSStyleDeclaration');
+
+test(function(t) {
+ var style = document.createElement('style');
+ document.body.appendChild(style);
+ t.add_cleanup(function() {
+ document.body.removeChild(style);
+ });
+ style.sheet.insertRule('#foo {}', 0);
+ style.sheet.cssRules[0].style.setProperty('appearance', 'none');
+
+ assert_equals(
+ style.sheet.cssRules[0].cssText, '#foo { appearance: none; }'
+ );
+}, 'serialization via CSSStyleRule');
+
+test(function(t) {
+ var style = document.createElement('style');
+ document.body.appendChild(style);
+ t.add_cleanup(function() {
+ document.body.removeChild(style);
+ });
+ style.sheet.insertRule('@media print { #foo {} }', 0);
+ style.sheet.cssRules[0].cssRules[0].style.setProperty('appearance', 'none');
+
+ assert_equals(
+ style.sheet.cssRules[0].cssText,
+ '@media print {\n #foo { appearance: none; }\n}'
+ );
+}, 'serialization via CSSMediaRule');
+</script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-slider-horizontal-001.html b/testing/web-platform/tests/css/css-ui/appearance-slider-horizontal-001.html
new file mode 100644
index 0000000000..4d5b1a94fc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-slider-horizontal-001.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: appearance: slider-horizontal</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="slider-horizontal is an alias to auto.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * { appearance: none; appearance: slider-horizontal; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-square-button-001.html b/testing/web-platform/tests/css/css-ui/appearance-square-button-001.html
new file mode 100644
index 0000000000..8f8c84355d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-square-button-001.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: appearance: square-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="square-button is an alias to auto.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * { appearance: none; appearance: square-button; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-textarea-001.html b/testing/web-platform/tests/css/css-ui/appearance-textarea-001.html
new file mode 100644
index 0000000000..5c55ff9fbf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-textarea-001.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: appearance: textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="textarea is an alias to auto.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * { appearance: none; appearance: textarea; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-textfield-001-ref.html b/testing/web-platform/tests/css/css-ui/appearance-textfield-001-ref.html
new file mode 100644
index 0000000000..5304352e6b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-textfield-001-ref.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Reference for CSS Basic User Interface Test: appearance: textfield</title>
+<style>
+ #container { width: 500px; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="text" value="input-search"><!-- intentionally type="text" -->
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/appearance-textfield-001.html b/testing/web-platform/tests/css/css-ui/appearance-textfield-001.html
new file mode 100644
index 0000000000..f2ca6fc6ac
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/appearance-textfield-001.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: appearance: textfield</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="textfield is an alias to auto except on input type=search.">
+<link rel="match" href="appearance-textfield-001-ref.html">
+<style>
+ #container { width: 500px; }
+ /*
+ * If the value being tested is not supported, then 'none' is used instead,
+ * which is intended to fail the test.
+ */
+ #container > * { appearance: none; appearance: textfield; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/box-sizing-001.html b/testing/web-platform/tests/css/css-ui/box-sizing-001.html
new file mode 100644
index 0000000000..870f486377
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/box-sizing-001.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: box-sizing:border-box and CSS2.1 10.3.3</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#blockwidth">
+<link rel="match" href="reference/box-sizing-001-ref.html">
+<meta name="assert" content="When box-sizing is border-box, the content width, rather than the computed value of the width property,
+ is considered when checking whether a block is larger than its containing block.">
+<style>
+#cb {
+ position: absolute;
+ width: 100px;
+ height: 100px;
+}
+#red {
+ position:absolute;
+ top: 25px;
+ right:5px;
+ width: 70px;
+ height: 70px;
+ background:red;
+ z-index: -1;
+}
+#test {
+ box-sizing: border-box;
+ margin-top: 25px;
+ margin-right: 5px;
+ margin-left: auto; /* should resolve to 25px, but would resolve to 0 if the wrong interpretation of width is used in CSS2.1 10.3.3 */
+ padding-left: 25px;
+ padding-right: 25px;
+ width: 70px;
+ height: 70px;
+ background:green;
+}
+</style>
+<body>
+ <p>Test passes if there is a <strong>filled green square</strong> and <strong>no red</strong>.</p>
+ <div id="cb">
+ <div id="red"></div>
+ <div id="test"></div>
+ </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/box-sizing-003.html b/testing/web-platform/tests/css/css-ui/box-sizing-003.html
new file mode 100644
index 0000000000..4aefec6656
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/box-sizing-003.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: box-sizing:border-box and CSS2.1 10.3.7</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#abs-non-replaced-width">
+<link rel="match" href="reference/box-sizing-001-ref.html">
+<meta name="assert" content="When box-sizing is border-box, the content width, rather than the computed value of the width property,
+ should be used in the the constraint that determines the used values of sizing and positioning properties
+ of absolutely positioned elements.">
+<style>
+#cb {
+ position: absolute;
+ width: 100px;
+ height: 100px;
+}
+#test {
+ position:absolute;
+ box-sizing: border-box;
+ margin-right: 5px;
+ margin-left: auto; /* should resolve to 25px, but would resolve to -25px if the wrong interpretation of width is used in CSS2.1 10.3.7 */
+ top: 25px;
+ left:0;
+ right:0;
+ padding-left: 25px;
+ padding-right: 25px;
+ width: 70px;
+ height: 70px;
+ background:green;
+}
+</style>
+<body>
+ <p>Test passes if there is a <strong>filled green square</strong> and <strong>no red</strong>.</p>
+ <div id="cb">
+ <div id="test"></div>
+ </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/box-sizing-005.html b/testing/web-platform/tests/css/css-ui/box-sizing-005.html
new file mode 100644
index 0000000000..64267da852
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/box-sizing-005.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: box-sizing:border-box and CSS2.1 10.6.4</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#abs-non-replaced-height">
+<link rel="match" href="reference/box-sizing-001-ref.html">
+<meta name="assert" content="When box-sizing is border-box, the content height, rather than the computed value of the height property,
+ should be used in the the constraint that determines the used values of sizing and positioning properties
+ of absolutely positioned elements.">
+<style>
+#cb {
+ position: absolute;
+ width: 100px;
+ height: 100px;
+}
+#test {
+ position:absolute;
+ box-sizing: border-box;
+ margin-right: 5px;
+ margin-left: 25px;
+ margin-bottom: 5px;
+ margin-top: auto; /* should resolve to 25px, but would resolve to -25px if the wrong interpretation of width is used in CSS2.1 10.6.4 */
+ top: 0;
+ left: 0;
+ right: 0;
+ bottom: 0;
+ padding-top: 25px;
+ padding-bottom: 25px;
+ width: 70px;
+ height: 70px;
+ background:green;
+}
+</style>
+<body>
+ <p>Test passes if there is a <strong>filled green square</strong> and <strong>no red</strong>.</p>
+ <div id="cb">
+ <div id="test"></div>
+ </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/box-sizing-007.html b/testing/web-platform/tests/css/css-ui/box-sizing-007.html
new file mode 100644
index 0000000000..c51f4318db
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/box-sizing-007.html
@@ -0,0 +1,75 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: box-sizing:border-box and auto sizing of intrinsicly sized replaced elements.</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-width">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-height">
+<meta name="flags" content="svg">
+<link rel="match" href="reference/box-sizing-007-ref.html">
+<meta name="assert" content="Exercises the sizing rules in CSS2.1 10.3.2 and 10.6.2 with box-sizing:border-box for replaced elements with either both intrisic dimentions or an intrinsic ratio, to check that they work correctly in terms of the content width height.">
+<style>
+img {
+ box-sizing: border-box;
+ width: auto;
+ height: auto;
+ background: white;
+ margin: 10px;
+}
+
+#t01, #t11, #t21, #t31 {
+ padding-left: 20px;
+ margin-left: -10px; /*not strictly necessary, but helps preserve alignment, which makes visual verification easier. */
+}
+#t02, #t12, #t22, #t32 {
+ padding-bottom: 20px;
+ margin-bottom: -10px; /*not strictly necessary, but helps preserve alignment, which makes visual verification easier. */
+}
+#t03, #t13, #t23, #t33 {
+ width: 120px;
+ padding-left: 20px;
+ margin-left: -10px; /*not strictly necessary, but helps preserve alignment, which makes visual verification easier. */
+}
+#t04, #t14, #t24, #t34 {
+ height: 120px;
+ padding-bottom: 20px;
+ margin-bottom: -10px; /*not strictly necessary, but helps preserve alignment, which makes visual verification easier. */
+}
+
+#t30, #t32 {
+ width: 100px;
+}
+
+#t31 {
+ height: 100px;
+}
+body {
+ max-width: 700px;
+}
+</style>
+<body>
+ <p>Test passes if there are 20 <strong>filled green squares</strong> and they are the <strong>same size</strong>.</p>
+ <img id=t00 src="support/w100_h100.svg">
+ <img id=t01 src="support/w100_h100.svg">
+ <img id=t02 src="support/w100_h100.svg">
+ <img id=t03 src="support/w100_h100.svg">
+ <img id=t04 src="support/w100_h100.svg">
+
+ <img id=t10 src="support/w100_r1-1.svg">
+ <img id=t11 src="support/w100_r1-1.svg">
+ <img id=t12 src="support/w100_r1-1.svg">
+ <img id=t13 src="support/w100_r1-1.svg">
+ <img id=t14 src="support/w100_r1-1.svg">
+
+ <img id=t20 src="support/h100_r1-1.svg">
+ <img id=t21 src="support/h100_r1-1.svg">
+ <img id=t22 src="support/h100_r1-1.svg">
+ <img id=t23 src="support/h100_r1-1.svg">
+ <img id=t24 src="support/h100_r1-1.svg">
+
+ <img id=t30 src="support/r1-1.svg">
+ <img id=t31 src="support/r1-1.svg">
+ <img id=t32 src="support/r1-1.svg">
+ <img id=t33 src="support/r1-1.svg">
+ <img id=t34 src="support/r1-1.svg">
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/box-sizing-008.html b/testing/web-platform/tests/css/css-ui/box-sizing-008.html
new file mode 100644
index 0000000000..3e79e29bcd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/box-sizing-008.html
@@ -0,0 +1,57 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: box-sizing:border-box and auto sizing of replaced elements with intrinisic width only.</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-width">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-height">
+<meta name="flags" content="svg">
+<link rel="match" href="reference/box-sizing-008-ref.html">
+<meta name="assert" content="Exercises the sizing rules in CSS2.1 10.3.2 and 10.6.2 with box-sizing:border-box for replaced elements with intrisic width and no intrinsic ratio, to check that they work correctly in terms of the content width height.">
+<style>
+#ref {
+ width: 100px;
+ height: 150px;
+ background: green;
+ margin: 10px;
+ display: inline-block;
+}
+img {
+ box-sizing: border-box;
+ width: auto;
+ height: auto;
+ background: white;
+ margin: 10px;
+}
+
+#t01 {
+ padding-left: 20px;
+ margin-left: -10px; /*not strictly necessary, but helps preserve alignment, which makes visual verification easier. */
+}
+#t02 {
+ padding-bottom: 20px;
+ margin-bottom: -10px; /*not strictly necessary, but helps preserve alignment, which makes visual verification easier. */
+}
+#t03 {
+ width: 120px;
+ padding-left: 20px;
+ margin-left: -10px; /*not strictly necessary, but helps preserve alignment, which makes visual verification easier. */
+}
+#t04 {
+ height: 170px;
+ padding-bottom: 20px;
+ margin-bottom: -10px; /*not strictly necessary, but helps preserve alignment, which makes visual verification easier. */
+}
+body {
+ max-width: 400px;
+}
+</style>
+<body>
+ <p>Test passes if there are 6 <strong>filled green rectangles</strong> and they are the <strong>same size</strong>.</p>
+ <div id="ref"></div>
+ <img id=t00 src="support/w100.svg">
+ <img id=t01 src="support/w100.svg">
+ <img id=t02 src="support/w100.svg">
+ <img id=t03 src="support/w100.svg">
+ <img id=t04 src="support/w100.svg">
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/box-sizing-009.html b/testing/web-platform/tests/css/css-ui/box-sizing-009.html
new file mode 100644
index 0000000000..69d526d63d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/box-sizing-009.html
@@ -0,0 +1,57 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: box-sizing:border-box and auto sizing of replaced elements with intrinisic height only.</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-width">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-height">
+<meta name="flags" content="svg">
+<link rel="match" href="reference/box-sizing-009-ref.html">
+<meta name="assert" content="Exercises the sizing rules in CSS2.1 10.3.2 and 10.6.2 with box-sizing:border-box for replaced elements with intrisic height and no intrinsic ratio, to check that they work correctly in terms of the content width height.">
+<style>
+#ref {
+ width: 300px;
+ height: 100px;
+ background: green;
+ margin: 10px;
+ display: inline-block;
+}
+img {
+ box-sizing: border-box;
+ width: auto;
+ height: auto;
+ background: white;
+ margin: 10px;
+}
+
+#t01 {
+ padding-left: 20px;
+ margin-left: -10px; /*not strictly necessary, but helps preserve alignment, which makes visual verification easier. */
+}
+#t02 {
+ padding-bottom: 20px;
+ margin-bottom: -10px; /*not strictly necessary, but helps preserve alignment, which makes visual verification easier. */
+}
+#t03 {
+ width: 320px;
+ padding-left: 20px;
+ margin-left: -10px; /*not strictly necessary, but helps preserve alignment, which makes visual verification easier. */
+}
+#t04 {
+ height: 120px;
+ padding-bottom: 20px;
+ margin-bottom: -10px; /*not strictly necessary, but helps preserve alignment, which makes visual verification easier. */
+}
+body {
+ max-width: 700px;
+}
+</style>
+<body>
+ <p>Test passes if there are 6 <strong>filled green rectangles</strong> and they are the <strong>same size</strong>.</p>
+ <div id="ref"></div>
+ <img id=t00 src="support/h100.svg">
+ <img id=t01 src="support/h100.svg">
+ <img id=t02 src="support/h100.svg">
+ <img id=t03 src="support/h100.svg">
+ <img id=t04 src="support/h100.svg">
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/box-sizing-010.html b/testing/web-platform/tests/css/css-ui/box-sizing-010.html
new file mode 100644
index 0000000000..7d1f9934cf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/box-sizing-010.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: auto sizing rules with box-sizing:border-box, intrinsic width and height, h > max-height</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-width">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-height">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#min-max-widths">
+<meta name="flags" content="svg">
+<link rel="match" href="reference/box-sizing-010-ref.html">
+<meta name="assert" content="Test checks that the CSS2.1 rules for auto width and height
+ on replaced elements with intrinsic width and height
+ with the h &gt; max-height constraint violation
+ are properly interpreted when box-sizing is border-box.">
+<style>
+img {
+ box-sizing: border-box;
+ width: auto;
+ height: auto;
+ background: white;
+ padding-bottom: 30px;
+ max-height: 100px;
+}
+
+#ref {
+ display: inline-block;
+ margin-bottom: 30px; /*for alignement*/
+ width: 70px;
+ height: 70px;
+ background: green;
+}
+
+</style>
+<body>
+ <p>Test passes if there are 2 <strong>filled green squares</strong> and they are the <strong>same size</strong>.</p>
+ <div id=ref></div>
+ <img src="support/w100_h100.svg">
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/box-sizing-011.html b/testing/web-platform/tests/css/css-ui/box-sizing-011.html
new file mode 100644
index 0000000000..29c2e98080
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/box-sizing-011.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: auto sizing rules with box-sizing:border-box, intrinsic width and height, w > max-width</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-width">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-height">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#min-max-widths">
+<meta name="flags" content="svg">
+<link rel="match" href="reference/box-sizing-010-ref.html">
+<meta name="assert" content="Test checks that the CSS2.1 rules for auto width and height
+ on replaced elements with intrinsic width and height
+ with the w &gt; max-width constraint violation
+ are properly interpreted when box-sizing is border-box.">
+<style>
+img {
+ box-sizing: border-box;
+ width: auto;
+ height: auto;
+ background: white;
+ padding-right: 30px;
+ max-width: 100px;
+}
+
+#ref {
+ display:inline-block;
+ height: 70px;
+ width: 70px;
+ background: green;
+}
+
+</style>
+<body>
+ <p>Test passes if there are 2 <strong>filled green squares</strong> and they are the <strong>same size</strong>.</p>
+ <div id=ref></div>
+ <img src="support/w100_h100.svg">
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/box-sizing-012.html b/testing/web-platform/tests/css/css-ui/box-sizing-012.html
new file mode 100644
index 0000000000..381ef7d850
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/box-sizing-012.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: auto sizing rules with box-sizing:border-box, intrinsic width, h > max-height</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-width">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-height">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#min-max-widths">
+<meta name="flags" content="svg">
+<link rel="match" href="reference/box-sizing-012-ref.html">
+<meta name="assert" content="Test checks that the CSS2.1 rules for auto width and height
+ on replaced elements with intrinsic width
+ with the h &gt; max-height constraint violation
+ are properly interpreted when box-sizing is border-box.">
+<style>
+img {
+ box-sizing: border-box;
+ width: auto;
+ height: auto;
+ background: white;
+ padding-bottom: 30px;
+ max-height: 100px;
+}
+
+#ref {
+ margin-bottom: 10px;
+ width: 100px;
+ height: 70px;
+ background: green;
+}
+
+</style>
+<body>
+ <p>Test passes if there are 2 <strong>filled green rectangles</strong> and they are the <strong>same size</strong>.</p>
+ <div id=ref></div>
+ <img src="support/w100.svg">
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/box-sizing-013.html b/testing/web-platform/tests/css/css-ui/box-sizing-013.html
new file mode 100644
index 0000000000..92f15dc1aa
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/box-sizing-013.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: auto sizing rules with box-sizing:border-box, intrinsic height, w > max-width</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-width">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-height">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#min-max-widths">
+<meta name="flags" content="svg">
+<link rel="match" href="reference/box-sizing-013-ref.html">
+<meta name="assert" content="Test checks that the CSS2.1 rules for auto width and height
+ on replaced elements with intrinsic height
+ with the w &gt; max-width constraint violation
+ are properly interpreted when box-sizing is border-box.">
+<style>
+img {
+ box-sizing: border-box;
+ width: auto;
+ height: auto;
+ background: white;
+ padding-right: 30px;
+ max-width: 100px;
+}
+
+#ref {
+ display:inline-block;
+ height: 100px;
+ width: 70px;
+ background: green;
+}
+
+</style>
+<body>
+ <p>Test passes if there are 2 <strong>filled green rectangles</strong> and they are the <strong>same size</strong>.</p>
+ <div id=ref></div>
+ <img src="support/h100.svg">
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/box-sizing-014.html b/testing/web-platform/tests/css/css-ui/box-sizing-014.html
new file mode 100644
index 0000000000..83532ea1fa
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/box-sizing-014.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: auto sizing rules with box-sizing:border-box, intrinsic width and ratio, h > max-height</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-width">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-height">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#min-max-widths">
+<meta name="flags" content="svg">
+<link rel="match" href="reference/box-sizing-010-ref.html">
+<meta name="assert" content="Test checks that the CSS2.1 rules for auto width and height
+ on replaced elements with intrinsic width and ratio
+ with the h &gt; max-height constraint violation
+ are properly interpreted when box-sizing is border-box.">
+<style>
+img {
+ box-sizing: border-box;
+ width: auto;
+ height: auto;
+ background: white;
+ padding-bottom: 30px;
+ max-height: 100px;
+}
+
+#ref {
+ display: inline-block;
+ margin-bottom: 30px; /*for alignement*/
+ width: 70px;
+ height: 70px;
+ background: green;
+}
+
+</style>
+<body>
+ <p>Test passes if there are 2 <strong>filled green squares</strong> and they are the <strong>same size</strong>.</p>
+ <div id=ref></div>
+ <img src="support/w100_r1-1.svg">
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/box-sizing-015.html b/testing/web-platform/tests/css/css-ui/box-sizing-015.html
new file mode 100644
index 0000000000..f5c629b369
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/box-sizing-015.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: auto sizing rules with box-sizing:border-box, intrinsic height and ratio, w > max-width</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-width">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-height">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#min-max-widths">
+<meta name="flags" content="svg">
+<link rel="match" href="reference/box-sizing-010-ref.html">
+<meta name="assert" content="Test checks that the CSS2.1 rules for auto width and height
+ on replaced elements with intrinsic height and ratio
+ with the w &gt; max-width constraint violation
+ are properly interpreted when box-sizing is border-box.">
+<style>
+img {
+ box-sizing: border-box;
+ width: auto;
+ height: auto;
+ background: white;
+ padding-right: 30px;
+ max-width: 100px;
+}
+
+#ref {
+ display:inline-block;
+ height: 70px;
+ width: 70px;
+ background: green;
+}
+
+</style>
+<body>
+ <p>Test passes if there are 2 <strong>filled green squares</strong> and they are the <strong>same size</strong>.</p>
+ <div id=ref></div>
+ <img src="support/h100_r1-1.svg">
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/box-sizing-016.html b/testing/web-platform/tests/css/css-ui/box-sizing-016.html
new file mode 100644
index 0000000000..ba3344ee66
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/box-sizing-016.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: auto sizing rules with box-sizing:border-box, intrinsic ratio, h > max-height</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-width">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-height">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#min-max-widths">
+<meta name="flags" content="svg">
+<link rel="match" href="reference/box-sizing-010-ref.html">
+<meta name="assert" content="Test checks that the CSS2.1 rules for auto width and height
+ on replaced elements with intrinsic ratio
+ with the h &gt; max-height constraint violation
+ are properly interpreted when box-sizing is border-box.">
+<style>
+img {
+ box-sizing: border-box;
+ width: auto;
+ height: auto;
+ background: white;
+ padding-bottom: 30px;
+ max-height: 100px;
+}
+
+#ref {
+ display: inline-block;
+ margin-bottom: 30px; /*for alignement*/
+ width: 70px;
+ height: 70px;
+ background: green;
+}
+
+</style>
+<body>
+ <p>Test passes if there are 2 <strong>filled green squares</strong> and they are the <strong>same size</strong>.</p>
+ <div id=ref></div>
+ <img src="support/r1-1.svg">
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/box-sizing-017.html b/testing/web-platform/tests/css/css-ui/box-sizing-017.html
new file mode 100644
index 0000000000..5fc682d536
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/box-sizing-017.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: auto sizing rules with box-sizing:border-box, intrinsic ratio, w > max-width</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-width">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-height">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#min-max-widths">
+<meta name="flags" content="svg">
+<link rel="match" href="reference/box-sizing-010-ref.html">
+<meta name="assert" content="Test checks that the CSS2.1 rules for auto width and height
+ on replaced elements with intrinsic ratio
+ with the w &gt; max-width constraint violation
+ are properly interpreted when box-sizing is border-box.">
+<style>
+img {
+ box-sizing: border-box;
+ width: auto;
+ height: auto;
+ background: white;
+ padding-right: 30px;
+ max-width: 100px;
+}
+
+#ref {
+ display:inline-block;
+ height: 70px;
+ width: 70px;
+ background: green;
+}
+
+</style>
+<body>
+ <p>Test passes if there are 2 <strong>filled green squares</strong> and they are the <strong>same size</strong>.</p>
+ <div id=ref></div>
+ <img src="support/r1-1.svg">
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/box-sizing-018.html b/testing/web-platform/tests/css/css-ui/box-sizing-018.html
new file mode 100644
index 0000000000..82f7cb546c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/box-sizing-018.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: auto sizing rules with box-sizing:border-box, intrinsic height and ratio, w > max-wdith and h > max-height and max-width/w ≤ max-height/h</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-width">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-height">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#min-max-widths">
+<meta name="flags" content="svg">
+<link rel="match" href="reference/box-sizing-010-ref.html">
+<meta name="assert" content="Test checks that the CSS2.1 rules for auto width and height
+ on replaced elements with intrinsic height and ratio
+ with the w &gt; max-width and h &gt; max-height constraint violation
+ and max-width/w ≤ max-height/h
+ are properly interpreted when box-sizing is border-box.">
+<style>
+#ref {
+ display: inline-block;
+ width: 70px;
+ height: 70px;
+ background: green;
+}
+
+img {
+ box-sizing: border-box;
+ width: auto;
+ height: auto;
+ background: white;
+ max-height: 100px;
+ max-width: 70px;
+}
+
+</style>
+<body>
+ <p>Test passes if there are 2 <strong>filled green squares</strong> and they are the <strong>same size</strong>.</p>
+ <div id="ref"></div>
+ <img src="support/h100_r1-1.svg">
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/box-sizing-019.html b/testing/web-platform/tests/css/css-ui/box-sizing-019.html
new file mode 100644
index 0000000000..8b63824344
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/box-sizing-019.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: auto sizing rules with box-sizing:border-box, intrinsic width and ratio, w > max-wdith and h > max-height and max-width/w > max-height/h</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-width">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-height">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#min-max-widths">
+<meta name="flags" content="svg">
+<link rel="match" href="reference/box-sizing-010-ref.html">
+<meta name="assert" content="Test checks that the CSS2.1 rules for auto width and height
+ on replaced elements with intrinsic width and ratio
+ with the w &gt; max-width and h &gt; max-height constraint violation
+ and max-width/w &gt; max-height/h
+ are properly interpreted when box-sizing is border-box.">
+<style>
+#ref {
+ display: inline-block;
+ width: 70px;
+ height: 70px;
+ background: green;
+}
+
+img {
+ box-sizing: border-box;
+ width: auto;
+ height: auto;
+ background: white;
+ max-height: 70px;
+ max-width: 100px;
+}
+
+</style>
+<body>
+ <p>Test passes if there are 2 <strong>filled green squares</strong> and they are the <strong>same size</strong>.</p>
+ <div id="ref"></div>
+ <img src="support/w100_r1-1.svg">
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/box-sizing-020.html b/testing/web-platform/tests/css/css-ui/box-sizing-020.html
new file mode 100644
index 0000000000..cc053cd963
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/box-sizing-020.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: auto sizing rules with box-sizing:border-box, intrinsic width and height, h &lt; min-height</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-width">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-height">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#min-max-widths">
+<meta name="flags" content="svg">
+<link rel="match" href="reference/box-sizing-020-ref.html">
+<meta name="assert" content="Test checks that the CSS2.1 rules for auto width and height
+ on replaced elements with intrinsic width and height
+ with the h < min-height constraint violation
+ are properly interpreted when box-sizing is border-box.">
+<style>
+img {
+ box-sizing: border-box;
+ width: auto;
+ height: auto;
+ background: white;
+ padding-bottom: 30px;
+ min-height: 160px;
+}
+
+#ref {
+ display: inline-block;
+ margin-bottom: 30px; /*for alignement*/
+ width: 130px;
+ height: 130px;
+ background: green;
+}
+
+</style>
+<body>
+ <p>Test passes if there are 2 <strong>filled green squares</strong> and they are the <strong>same size</strong>.</p>
+ <div id=ref></div>
+ <img src="support/w100_h100.svg">
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/box-sizing-021.html b/testing/web-platform/tests/css/css-ui/box-sizing-021.html
new file mode 100644
index 0000000000..9ae947f2b4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/box-sizing-021.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: auto sizing rules with box-sizing:border-box, intrinsic width and height, w &lt; win-width</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-width">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-height">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#min-max-widths">
+<meta name="flags" content="svg">
+<link rel="match" href="reference/box-sizing-020-ref.html">
+<meta name="assert" content="Test checks that the CSS2.1 rules for auto width and height
+ on replaced elements with intrinsic width and height
+ with the w < min-width constraint violation
+ are properly interpreted when box-sizing is border-box.">
+<style>
+img {
+ box-sizing: border-box;
+ width: auto;
+ height: auto;
+ background: white;
+ padding-right: 30px;
+ min-width: 160px;
+}
+
+#ref {
+ display:inline-block;
+ height: 130px;
+ width: 130px;
+ background: green;
+}
+
+</style>
+<body>
+ <p>Test passes if there are 2 <strong>filled green squares</strong> and they are the <strong>same size</strong>.</p>
+ <div id=ref></div>
+ <img src="support/w100_h100.svg">
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/box-sizing-022.html b/testing/web-platform/tests/css/css-ui/box-sizing-022.html
new file mode 100644
index 0000000000..7ebd22041f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/box-sizing-022.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: auto sizing rules with box-sizing:border-box, intrinsic width, w &lt; min-width</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-width">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-height">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#min-max-widths">
+<meta name="flags" content="svg">
+<link rel="match" href="reference/box-sizing-022-ref.html">
+<meta name="assert" content="Test checks that the CSS2.1 rules for auto width and height
+ on replaced elements with intrinsic width
+ with the w < min-width constraint violation
+ are properly interpreted when box-sizing is border-box.">
+<style>
+img {
+ box-sizing: border-box;
+ width: auto;
+ height: auto;
+ background: white;
+ padding-right: 30px;
+ min-width: 160px;
+}
+
+#ref {
+ display: inline-block;
+ width: 130px;
+ height: 150px;
+ background: green;
+}
+
+</style>
+<body>
+ <p>Test passes if there are 2 <strong>filled green rectangles</strong> and they are the <strong>same size</strong>.</p>
+ <div id=ref></div>
+ <img src="support/w100.svg">
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/box-sizing-023.html b/testing/web-platform/tests/css/css-ui/box-sizing-023.html
new file mode 100644
index 0000000000..e143648aa7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/box-sizing-023.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: auto sizing rules with box-sizing:border-box, intrinsic height, h &lt; min-height</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-width">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-height">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#min-max-widths">
+<meta name="flags" content="svg">
+<link rel="match" href="reference/box-sizing-023-ref.html">
+<meta name="assert" content="Test checks that the CSS2.1 rules for auto width and height
+ on replaced elements with intrinsic height
+ with the h < min-height constraint violation
+ are properly interpreted when box-sizing is border-box.">
+<style>
+img {
+ box-sizing: border-box;
+ width: auto;
+ height: auto;
+ background: white;
+ padding-bottom: 30px;
+ min-height: 160px;
+}
+
+#ref {
+ height: 130px;
+ margin-bottom: 10px;
+ width: 300px;
+ background: green;
+}
+
+</style>
+<body>
+ <p>Test passes if there are 2 <strong>filled green rectangles</strong> and they are the <strong>same size</strong>.</p>
+ <div id=ref></div>
+ <img src="support/h100.svg">
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/box-sizing-024.html b/testing/web-platform/tests/css/css-ui/box-sizing-024.html
new file mode 100644
index 0000000000..a6285735bd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/box-sizing-024.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: auto sizing rules with box-sizing:border-box, intrinsic width and ratio, h &lt; mi:-height</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-width">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-height">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#min-max-widths">
+<meta name="flags" content="svg">
+<link rel="match" href="reference/box-sizing-020-ref.html">
+<meta name="assert" content="Test checks that the CSS2.1 rules for auto width and height
+ on replaced elements with intrinsic width and ratio
+ with the h < min-height constraint violation
+ are properly interpreted when box-sizing is border-box.">
+<style>
+img {
+ box-sizing: border-box;
+ width: auto;
+ height: auto;
+ background: white;
+ padding-bottom: 30px;
+ min-height: 160px;
+}
+
+#ref {
+ display: inline-block;
+ margin-bottom: 30px; /*for alignement*/
+ width: 130px;
+ height: 130px;
+ background: green;
+}
+
+</style>
+<body>
+ <p>Test passes if there are 2 <strong>filled green squares</strong> and they are the <strong>same size</strong>.</p>
+ <div id=ref></div>
+ <img src="support/w100_r1-1.svg">
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/box-sizing-025.html b/testing/web-platform/tests/css/css-ui/box-sizing-025.html
new file mode 100644
index 0000000000..8a673ad1cc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/box-sizing-025.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: auto sizing rules with box-sizing:border-box, intrinsic height and ratio, w &lt; min-width</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-width">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#inline-replaced-height">
+<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#min-max-widths">
+<meta name="flags" content="svg">
+<link rel="match" href="reference/box-sizing-020-ref.html">
+<meta name="assert" content="Test checks that the CSS2.1 rules for auto width and height
+ on replaced elements with intrinsic height and ratio
+ with the w < min-width constraint violation
+ are properly interpreted when box-sizing is border-box.">
+<style>
+img {
+ box-sizing: border-box;
+ width: auto;
+ height: auto;
+ background: white;
+ padding-right: 30px;
+ min-width: 160px;
+}
+
+#ref {
+ display:inline-block;
+ height: 130px;
+ width: 130px;
+ background: green;
+}
+
+</style>
+<body>
+ <p>Test passes if there are 2 <strong>filled green squares</strong> and they are the <strong>same size</strong>.</p>
+ <div id=ref></div>
+ <img src="support/h100_r1-1.svg">
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/box-sizing-026.html b/testing/web-platform/tests/css/css-ui/box-sizing-026.html
new file mode 100644
index 0000000000..399c0499f7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/box-sizing-026.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: box-sizing:border-box floors to 0</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+<meta name="assert" content="Floor width and height computation to 0 as they cannot be negative.">
+<style>
+#red {
+ position: absolute;
+ width: 100px;
+ height: 100px;
+ background:red;
+ z-index: -1;
+}
+#test {
+ box-sizing: border-box;
+ border: 50px green solid;
+ width: 10px;
+ height: 10px;
+}
+</style>
+<body>
+ <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+ <div id=red></div>
+ <div id=test></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/box-sizing-027.html b/testing/web-platform/tests/css/css-ui/box-sizing-027.html
new file mode 100644
index 0000000000..aebb3e1095
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/box-sizing-027.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: box-sizing:border-box resolved values</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<meta charset="utf-8">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+#test {
+ box-sizing: border-box;
+ border: 10px solid blue;
+ padding: 10px;
+ width: 100px;
+ height: 100px;
+}
+</style>
+<body>
+ <div id=test></div>
+ <div id=log></div>
+
+<script>
+test(
+ function(){
+ var test = document.getElementById("test");
+ assert_equals(window.getComputedStyle(test)["width"], "100px");
+ }, "Check the resolved value of 'width' when box-sizing is border-box.");
+test(
+ function(){
+ var test = document.getElementById("test");
+ assert_equals(window.getComputedStyle(test)["height"], "100px");
+ }, "Check the resolved value of 'height' when box-sizing is border-box.");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/canvas-cursor-001.html b/testing/web-platform/tests/css/css-ui/canvas-cursor-001.html
new file mode 100644
index 0000000000..f1155d5075
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/canvas-cursor-001.html
@@ -0,0 +1,25 @@
+<!doctype html>
+<title>CSS UI Test: propagating the root cursor to the canvas</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#canvas_cursor">
+<meta name="flags" content="interact image">
+<meta name="assert" content="Test checks the cursor applied to the root element is propagated to the canvas.">
+<style>
+:root {
+ padding:0;
+ background:blue;
+ cursor: url(support/green.ico), pointer;
+}
+body {
+ margin:0;
+}
+p {
+ background: white;
+ cursor: default;
+ position:absolute;
+ /* the p is taken out of flow to make the html and body elements collapse to nothing,
+ leaving the whole background area empty of any element,
+ as that's what we want to hover over */ }
+</style>
+<body>
+<p>Place the mouse cursor over the blue area. You should see a green square.
diff --git a/testing/web-platform/tests/css/css-ui/canvas-cursor-002.html b/testing/web-platform/tests/css/css-ui/canvas-cursor-002.html
new file mode 100644
index 0000000000..c67a10f749
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/canvas-cursor-002.html
@@ -0,0 +1,22 @@
+<!doctype html>
+<title>CSS UI Test: not propagating the body cursor to the canvas</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#canvas_cursor">
+<meta name="flags" content="interact image">
+<meta name="assert" content="Test checks the cursor applied to the body element is not propagated to the canvas.">
+<style>
+:root { padding:0; background:blue;}
+body {
+ margin:0;
+ cursor: url(support/red.ico), pointer;
+}
+p {
+ background: white;
+ cursor: default;
+ position:absolute;
+ /* the p is taken out of flow to make the html and body elements collapse to nothing,
+ leaving the whole background area empty of any element,
+ as that's what we want to hover over */ }
+</style>
+<body>
+<p>Place the mouse cursor over the blue area. You should see no red.
diff --git a/testing/web-platform/tests/css/css-ui/caret-color-001.html b/testing/web-platform/tests/css/css-ui/caret-color-001.html
new file mode 100644
index 0000000000..c642363ca3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/caret-color-001.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: caret-color</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#caret-color">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that caret-color can be set on a textarea">
+<style>
+ textarea {
+ font-size: 3em;
+ font-weight: bold;
+ width: 10em;
+ padding: 10px;
+ background: black; color: white; /* the color of a thin object like the caret is easier to see on a black background. */
+
+ caret-color: lime;
+ }
+</style>
+<body>
+ <p>Test passes if, when the text area below is focused for editing, the text insertion caret is green.</p>
+ <p>The shape of the caret, and whether it flashes, are not part of the test.</p>
+ <textarea id="test"></textarea>
+ <script>
+ window.onload = function() {
+ document.getElementById("test").focus();
+ }
+ </script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/caret-color-002.html b/testing/web-platform/tests/css/css-ui/caret-color-002.html
new file mode 100644
index 0000000000..96417da89e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/caret-color-002.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: caret-color is inherited</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#caret-color">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that caret-color value does inherit">
+<style>
+ textarea {
+ font-size: 3em;
+ font-weight: bold;
+ width: 10em;
+ padding: 10px;
+ background: black; color: white; /* the color of a thin object like the caret is easier to see on a black background. */
+ }
+ div {
+ caret-color: lime;
+ }
+</style>
+<body>
+ <p>Test passes if, when the text area below is focused for editing, the text insertion caret is green.</p>
+ <p>The shape of the caret, and whether it flashes, are not part of the test.</p>
+ <div>
+ <textarea id="test"></textarea>
+ </div>
+ <script>
+ window.onload = function() {
+ document.getElementById("test").focus();
+ }
+ </script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/caret-color-003.html b/testing/web-platform/tests/css/css-ui/caret-color-003.html
new file mode 100644
index 0000000000..d0d1cce04d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/caret-color-003.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: caret-color auto</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#caret-color">
+<meta name="flags" content="interact should">
+<meta name="assert" content="Test checks that caret-color: auto matches currentColor">
+<style>
+ textarea {
+ font-size: 3em;
+ font-weight: bold;
+ width: 10em;
+ padding: 10px;
+ background: black; /* the color of a thin object like the caret is easier to see on a black background. */
+
+ color: lime;
+ caret-color: auto; /*initial value, but to be sure in case the UA stylesheet sets something else */
+ }
+</style>
+<body>
+ <p>Test passes if, when the text area below is focused for editing, the text insertion caret is green,
+ like the text in that textarea.</p>
+ <p>The shape of the caret, and whether it flashes, are not part of the test.</p>
+ <textarea id="test">focus this</textarea>
+ <script>
+ window.onload = function() {
+ document.getElementById("test").focus();
+ }
+ </script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/caret-color-004.html b/testing/web-platform/tests/css/css-ui/caret-color-004.html
new file mode 100644
index 0000000000..75bdacd98f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/caret-color-004.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: caret-color auto, black on white</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#caret-color">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that caret-color:auto provides good contrast in black on white">
+<style>
+ textarea {
+ font-size: 3em;
+ font-weight: bold;
+ width: 10em;
+ padding: 10px;
+
+ background: white;
+ color: black;
+ caret-color: auto; /*initial value, but to be sure in case the UA stylesheet sets something else */
+ }
+</style>
+<body>
+ <p>Test passes if, when the text area below is focused for editing, the text insertion caret is either black
+ or some other color that contrasts well with the background.</p>
+ <p>The shape of the caret, and whether it flashes, are not part of the test.</p>
+ <textarea id="test"></textarea>
+ <script>
+ window.onload = function() {
+ document.getElementById("test").focus();
+ }
+ </script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/caret-color-005.html b/testing/web-platform/tests/css/css-ui/caret-color-005.html
new file mode 100644
index 0000000000..30808cbde7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/caret-color-005.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: caret-color auto, white on black</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#caret-color">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that caret-color:auto provides good contrast in white on black">
+<style>
+ textarea {
+ font-size: 3em;
+ font-weight: bold;
+ width: 10em;
+ padding: 10px;
+
+ background: black;
+ color: white;
+ caret-color: auto; /*initial value, but to be sure in case the UA stylesheet sets something else */
+ }
+</style>
+<body>
+ <p>Test passes if, when the text area below is focused for editing, the text insertion caret is either white
+ or some other color that contrasts well with the background.</p>
+ <p>The shape of the caret, and whether it flashes, are not part of the test.</p>
+ <textarea id="test"></textarea>
+ <script>
+ window.onload = function() {
+ document.getElementById("test").focus();
+ }
+ </script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/caret-color-006.html b/testing/web-platform/tests/css/css-ui/caret-color-006.html
new file mode 100644
index 0000000000..e85f7f194e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/caret-color-006.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: caret-color auto, gray on gray</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#caret-color">
+<meta name="flags" content="interact may">
+<meta name="assert" content="Test checks that caret-color:auto provides good contrast in gray on gray">
+<style>
+ textarea {
+ font-size: 3em;
+ font-weight: bold;
+ width: 10em;
+ padding: 10px;
+
+ background: gray;
+ color: gray;
+ caret-color: auto; /*initial value, but to be sure in case the UA stylesheet sets something else */
+ }
+</style>
+<body>
+ <p>Test passes if, when the text area below is focused for editing, the text insertion caret is
+ any color that contrasts well with the background.</p>
+ <p>The shape of the caret, and whether it flashes, are not part of the test.</p>
+ <textarea id="test"></textarea>
+ <script>
+ window.onload = function() {
+ document.getElementById("test").focus();
+ }
+ </script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/caret-color-007.html b/testing/web-platform/tests/css/css-ui/caret-color-007.html
new file mode 100644
index 0000000000..ddd7e03c39
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/caret-color-007.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: caret-color: currentColor</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#caret-color">
+<link rel="help" href="https://drafts.csswg.org/css-color-4/#currentcolor-color">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that caret-color:currentColor is inherited as currentColor and resolves to the value of the color property at used value time">
+<style>
+ textarea {
+ font-size: 3em;
+ font-weight: bold;
+ width: 10em;
+ padding: 10px;
+ background: black; /* the color of a thin object like the caret is easier to see on a black background. */
+
+ color: lime;
+ }
+ div {
+ caret-color: currentcolor;
+ color: red;
+ }
+</style>
+<body>
+ <p>Test passes if, when the text area below is focused for editing, the text insertion caret is green</p>
+ <p>The shape of the caret, and whether it flashes, are not part of the test.</p>
+ <div>
+ <textarea id="test"></textarea>
+ </div>
+ <script>
+ window.onload = function() {
+ document.getElementById("test").focus();
+ }
+ </script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/caret-color-008.html b/testing/web-platform/tests/css/css-ui/caret-color-008.html
new file mode 100644
index 0000000000..c63d89c3d6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/caret-color-008.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: caret-color animation</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#caret-color">
+<link rel="help" href="https://drafts.csswg.org/css-animations-1/#animation">
+<meta name="flags" content="interact animated">
+<meta name="assert" content="Test checks that caret-color is animatable as a color">
+<style>
+ textarea {
+ font-size: 3em;
+ font-weight: bold;
+ width: 10em;
+ padding: 10px;
+ background: black; color: white; /* the color of a thin object like the caret is easier to see on a black background. */
+
+ caret-color: red;
+ animation: caret-many-colors 5s linear alternate infinite;
+ }
+ @keyframes caret-many-colors {
+ 0% { caret-color: lime; }
+ 20% { caret-color: gray; }
+ 40% { caret-color: cyan; }
+ 60% { caret-color: pink; }
+ 80% { caret-color: blue; }
+ 100% { caret-color: brown; }
+ }
+</style>
+<body>
+ <p>Test passes if, when the text area below is focused for editing, the text insertion caret continuously changes colors.</p>
+ <p>The shape of the caret, and whether it flashes, are not part of the test.</p>
+ <textarea id="test"></textarea>
+ <script>
+ window.onload = function() {
+ document.getElementById("test").focus();
+ }
+ </script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/caret-color-009.html b/testing/web-platform/tests/css/css-ui/caret-color-009.html
new file mode 100644
index 0000000000..23aeaa6531
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/caret-color-009.html
@@ -0,0 +1,49 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: caret-color computed values</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#caret-color">
+<link rel="help" href="https://drafts.csswg.org/css-color-4/#currentcolor-color">
+<meta name="flags" content="dom">
+<meta name="assert" content="Test checks that the resolved value of auto, currentcolor and initial for caret-color property, is the used value.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+#d1 {
+ color: lime;
+ caret-color: auto;
+}
+#d2 {
+ color: cyan;
+ caret-color: currentcolor;
+}
+#d3 {
+ color: magenta;
+ caret-color: initial;
+}
+</style>
+<body>
+ <div id=d1></div>
+ <div id=d2></div>
+ <div id=d3></div>
+ <div id=log></div>
+
+<script>
+test(
+ function(){
+ var d1 = document.getElementById("d1");
+ assert_equals(window.getComputedStyle(d1)["caret-color"], "rgb(0, 255, 0)");
+ }, "Check the resolved value of 'auto'");
+test(
+ function(){
+ var d2 = document.getElementById("d2");
+ assert_equals(window.getComputedStyle(d2)["caret-color"], "rgb(0, 255, 255)");
+ }, "Check the resolved value of 'currentcolor'");
+test(
+ function(){
+ var d3 = document.getElementById("d3");
+ assert_equals(window.getComputedStyle(d3)["caret-color"], "rgb(255, 0, 255)");
+ }, "Check the resolved value of 'initial'");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/caret-color-010.html b/testing/web-platform/tests/css/css-ui/caret-color-010.html
new file mode 100644
index 0000000000..a734f8a2b7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/caret-color-010.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: caret-color input</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#caret-color">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that caret-color can be set on an input">
+<style>
+ input {
+ font-size: 3em;
+ font-weight: bold;
+ width: 10em;
+ padding: 10px;
+ background: black; color: white; /* the color of a thin object like the caret is easier to see on a black background. */
+
+ caret-color: lime;
+ }
+</style>
+<body>
+ <p>Test passes if, when the input field below is focused for editing, the text insertion caret is green.</p>
+ <p>The shape of the caret, and whether it flashes, are not part of the test.</p>
+ <input id="test"></input>
+ <script>
+ window.onload = function() {
+ document.getElementById("test").focus();
+ }
+ </script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/caret-color-011.html b/testing/web-platform/tests/css/css-ui/caret-color-011.html
new file mode 100644
index 0000000000..a0ca95a396
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/caret-color-011.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: caret-color contenteditable</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#caret-color">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that caret-color can be set on a contenteditable element">
+<style>
+ div {
+ font-size: 3em;
+ font-weight: bold;
+ width: 10em;
+ padding: 10px;
+ background: black; color: white; /* the color of a thin object like the caret is easier to see on a black background. */
+
+ caret-color: lime;
+ }
+</style>
+<body>
+ <p>Test passes if, when when the editable element below is focused is focused for editing, the text insertion caret is green.</p>
+ <p>The shape of the caret, and whether it flashes, are not part of the test.</p>
+ <div id="test" contenteditable>Focus this editable element</div>
+ <script>
+ window.onload = function() {
+ document.getElementById("test").focus();
+ }
+ </script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/caret-color-012.html b/testing/web-platform/tests/css/css-ui/caret-color-012.html
new file mode 100644
index 0000000000..1c8439167f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/caret-color-012.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: caret-color: auto</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#caret-color">
+<meta name="flags" content="interact should">
+<meta name="assert" content="Test checks that caret-color:auto is inherited as auto and resolves to the value of the color property at used value time">
+<style>
+ textarea {
+ font-size: 3em;
+ font-weight: bold;
+ width: 10em;
+ padding: 10px;
+ background: black; /* the color of a thin object like the caret is easier to see on a black background. */
+
+ color: lime;
+ }
+ div {
+ caret-color: auto;
+ color: red;
+ }
+</style>
+<body>
+ <p>Test passes if, when the text area below is focused for editing, the text insertion caret is green.</p>
+ <p>The shape of the caret, and whether it flashes, are not part of the test.</p>
+ <div>
+ <textarea id="test"></textarea>
+ </div>
+ <script>
+ window.onload = function() {
+ document.getElementById("test").focus();
+ }
+ </script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/caret-color-013.html b/testing/web-platform/tests/css/css-ui/caret-color-013.html
new file mode 100644
index 0000000000..8b307fb6e8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/caret-color-013.html
@@ -0,0 +1,50 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: caret-color dynamic changes</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#caret-color">
+<link rel="help" href="https://www.w3.org/TR/css3-color/#color0">
+<meta name="flags" content="dom">
+<meta name="assert" content="Test checks checks that carret-color can be correctly changed using the style attribute, and that the computed value is done correctly.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<div id="log"></div>
+<div id="wrapper">
+ <textarea id="textarea"></textarea>
+</div>
+
+<script>
+ function testStyleCaretColor(element, value) {
+ assert_equals(element.style.caretColor, value, "The style attribute's caret-color should be '" + value + "'");
+ }
+
+ function testComputedStyleCaretColor(element, value) {
+ assert_equals(getComputedStyle(element).getPropertyValue("caret-color"), value, "caret-color computed style should be '" + value + "'");
+ }
+
+ function setAndCheckCaretColor(element, caretColor, styleValue, computedStyleValue, description) {
+ element.style.caretColor = caretColor;
+ test(function() {
+ testStyleCaretColor(element, styleValue);
+ testComputedStyleCaretColor(element, computedStyleValue);
+ }, description);
+ }
+
+ var textarea = document.getElementById("textarea");
+ setAndCheckCaretColor(textarea, "", "", "rgb(0, 0, 0)", "Test default caret-color");
+ setAndCheckCaretColor(textarea, "initial", "initial", "rgb(0, 0, 0)", "Test caret-color: initial");
+ setAndCheckCaretColor(textarea, "inherit", "inherit", "rgb(0, 0, 0)", "Test caret-color: inherit");
+ setAndCheckCaretColor(textarea, "auto", "auto", "rgb(0, 0, 0)", "Test caret-color: auto");
+ setAndCheckCaretColor(textarea, "currentcolor", "currentcolor", "rgb(0, 0, 0)", "Test caret-color: currentcolor");
+ setAndCheckCaretColor(textarea, "lime", "lime", "rgb(0, 255, 0)", "Test caret-color: lime");
+ setAndCheckCaretColor(textarea, "initial", "initial", "rgb(0, 0, 0)", "Reset caret-color: initial");
+ setAndCheckCaretColor(textarea, "rgb(0, 100, 100)", "rgb(0, 100, 100)", "rgb(0, 100, 100)", "Test caret-color: rgb(0, 100, 100)");
+
+ var wrapper = document.getElementById("wrapper");
+ wrapper.style.caretColor = "green";
+
+ setAndCheckCaretColor(textarea, "initial", "initial", "rgb(0, 0, 0)", "Test caret-color: initial (inherited)");
+ setAndCheckCaretColor(textarea, "inherit", "inherit", "rgb(0, 128, 0)", "Test caret-color: inherit (inherited)");
+ setAndCheckCaretColor(textarea, "blue", "blue", "rgb(0, 0, 255)", "Test caret-color: blue (inherited)");
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/caret-color-014.html b/testing/web-platform/tests/css/css-ui/caret-color-014.html
new file mode 100644
index 0000000000..1607c368c0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/caret-color-014.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: caret-color links</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#caret-color">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that caret-color can be set on a contenteditable link">
+<style>
+ a {
+ font-size: 3em;
+ font-weight: bold;
+ width: 10em;
+ padding: 10px;
+ background: black; /* the color of a thin object like the caret is easier to see on a black background. */
+
+ color: white;
+ caret-color: lime;
+ }
+</style>
+<body>
+ <p>Test passes if, when the link is focused for editing, the text insertion caret is green.</p>
+ <p>The shape of the caret, and whether it flashes, are not part of the test.</p>
+ <a id="link" contenteditable href="#">link</a>
+ <script>
+ window.onload = function() {
+ document.getElementById("link").focus();
+ }
+ </script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/caret-color-015.html b/testing/web-platform/tests/css/css-ui/caret-color-015.html
new file mode 100644
index 0000000000..eacbcae2b3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/caret-color-015.html
@@ -0,0 +1,44 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: caret-color visited links</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#caret-color">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that caret-color can be set on a contenteditable visited link">
+<style>
+ a {
+ font-size: 3em;
+ font-weight: bold;
+ width: 10em;
+ padding: 10px;
+ background: black; /* the color of a thin object like the caret is easier to see on a black background. */
+
+ color: white;
+ caret-color: red;
+ }
+
+ a:link {
+ color: yellow;
+ }
+
+ a:visited {
+ caret-color: lime;
+ }
+</style>
+<body>
+ <p>Before running this test, this <a href="./">link</a> must have been visited. It will have yellow text if this is not the case. If it its text is yellow, you need to navigate to this link first.
+ <p>Test passes if, when the link below is focused for editing, the text insertion caret is green.</p>
+ <p>The shape of the caret, and whether it flashes, are not part of the test.</p>
+ <a id="link" contenteditable href="./">link</a>
+ <script>
+ window.onload = function() {
+ /* Convenience helper to get the link into the browsing history.
+ Using a relative path because some browsers only allow replaceState within the same domain. */
+ current_url = window.location.href;
+ history.replaceState({},"","./");
+ history.replaceState({},"",current_url);
+
+ document.getElementById("link").focus();
+ }
+ </script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/caret-color-016.html b/testing/web-platform/tests/css/css-ui/caret-color-016.html
new file mode 100644
index 0000000000..25740ace9d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/caret-color-016.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: caret-color visited link computed value</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#caret-color">
+<link rel="help" href="https://www.w3.org/TR/css3-color/#color0">
+<link rel="help" href="https://www.w3.org/TR/selectors4/#link">
+<meta name="flags" content="may interact">
+<meta name="assert" content="Test checks that computed style of caret-color on visited links doesn't leak privacy information.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+ a {
+ font-size: 3em;
+ font-weight: bold;
+ width: 10em;
+ padding: 10px;
+ background: black; /* the color of a thin object like the caret is easier to see on a black background. */
+
+ color: white;
+ caret-color: lime;
+ }
+
+ a:link {
+ color: yellow;
+ }
+
+ a:visited {
+ caret-color: cyan;
+ }
+</style>
+<body>
+ <p>Before running this test, this <a href="./">link</a> must have been visited. It will have yellow text if this is not the case. If it its text is yellow, you need to navigate to this link first.
+ <p><a id="link" contenteditable href="./">link</a></p>
+ <div id=log></div>
+
+ <script>
+ setup(
+ function(){
+ /* Helper to get the link into the browsing history.
+ Using a relative path because some browsers only allow replaceState within the same domain. */
+ current_url = window.location.href;
+ history.replaceState({},"","./");
+ history.replaceState({},"",current_url);
+ });
+
+ test(
+ function(){
+ var link = document.getElementById("link");
+ assert_equals(window.getComputedStyle(link)["caret-color"], "rgb(0, 255, 0)");
+ }, "The computed value of a visited link should be the same than a non-visited link");
+ </script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/caret-color-017.html b/testing/web-platform/tests/css/css-ui/caret-color-017.html
new file mode 100644
index 0000000000..cfd7bbd0e1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/caret-color-017.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: caret-color transition</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#caret-color">
+<link rel="help" href="https://www.w3.org/TR/css-transitions-1/#transition-shorthand-property">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that caret-color can be used in a transition">
+<style>
+ textarea {
+ font-size: 3em;
+ font-weight: bold;
+ width: 10em;
+ padding: 10px;
+ background: black; color: white; /* the color of a thin object like the caret is easier to see on a black background. */
+
+ caret-color: magenta;
+ transition: caret-color 5s;
+ }
+
+ textarea:focus {
+ caret-color: lime;
+ }
+</style>
+<body>
+ <p>Test passes if, when the text area below is focused for editing, the text insertion caret color gradually changes from magenta to green.</p>
+ <p>The shape of the caret, and whether it flashes, are not part of the test.</p>
+ <textarea></textarea>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/caret-color-018.html b/testing/web-platform/tests/css/css-ui/caret-color-018.html
new file mode 100644
index 0000000000..f5dd3a616a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/caret-color-018.html
@@ -0,0 +1,45 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: caret-color test animation</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#caret-color">
+<link rel="help" href="https://www.w3.org/TR/web-animations-1/#dom-animatable-animate">
+<link rel="help" href="https://www.w3.org/TR/css3-color/#color0">
+<meta name="assert" content="Test checks that caret-color is animatable as a color, and that the computed values during the animation are the expected ones.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+ textarea {
+ caret-color: red;
+ }
+</style>
+<body>
+ <textarea id="textarea"></textarea>
+ <div id=log></div>
+
+ <script>
+ test(
+ function(){
+ var textarea = document.getElementById("textarea");
+ assert_equals(getComputedStyle(textarea).caretColor, 'rgb(255, 0, 0)');
+
+ var keyframes = [
+ { caretColor: 'magenta' },
+ { caretColor: 'lime' }
+ ];
+ var options = {
+ duration: 10,
+ fill: "forwards"
+ };
+
+ var player = textarea.animate(keyframes, options);
+ player.pause();
+ player.currentTime = 0;
+ assert_equals(getComputedStyle(textarea).caretColor, 'rgb(255, 0, 255)');
+ player.currentTime = 5;
+ assert_equals(getComputedStyle(textarea).caretColor, 'rgb(128, 128, 128)');
+ player.currentTime = 10;
+ assert_equals(getComputedStyle(textarea).caretColor, 'rgb(0, 255, 0)');
+ }, "The caret-color property is animatable");
+</script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/caret-color-019.html b/testing/web-platform/tests/css/css-ui/caret-color-019.html
new file mode 100644
index 0000000000..adb5d802f6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/caret-color-019.html
@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: caret-color auto test animation</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#caret-color">
+<link rel="help" href="https://www.w3.org/TR/web-animations-1/#dom-animatable-animate">
+<link rel="help" href="https://www.w3.org/TR/css3-color/#color0">
+<meta name="assert" content="Test checks that 'auto' value for caret-color property is not interpolable.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+ textarea {
+ color: magenta;
+ }
+</style>
+<body>
+ <textarea id="textarea"></textarea>
+ <div id=log></div>
+
+ <script>
+ test(
+ function(){
+ var textarea = document.getElementById("textarea");
+ var keyframes = [
+ { caretColor: 'auto' },
+ { caretColor: 'lime' }
+ ];
+ var options = {
+ duration: 10,
+ fill: "forwards"
+ };
+
+ var player = textarea.animate(keyframes, options);
+ player.pause();
+ player.currentTime = 5;
+ assert_equals(getComputedStyle(textarea).caretColor, 'rgb(0, 255, 0)');
+ }, "caret-color: auto is not interpolable");
+</script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/caret-color-020.html b/testing/web-platform/tests/css/css-ui/caret-color-020.html
new file mode 100644
index 0000000000..742c4a1f95
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/caret-color-020.html
@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: caret-color currentcolor test animation</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#caret-color">
+<link rel="help" href="https://www.w3.org/TR/web-animations-1/#dom-animatable-animate">
+<link rel="help" href="https://www.w3.org/TR/css3-color/#color0">
+<meta name="assert" content="Test checks that 'currentcolor' value for caret-color property is interpolable.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+ textarea {
+ color: magenta;
+ }
+</style>
+<body>
+ <textarea id="textarea"></textarea>
+ <div id=log></div>
+
+ <script>
+ test(
+ function(){
+ var textarea = document.getElementById("textarea");
+ var keyframes = [
+ { caretColor: 'currentcolor' },
+ { caretColor: 'lime' }
+ ];
+ var options = {
+ duration: 10,
+ fill: "forwards"
+ };
+
+ var player = textarea.animate(keyframes, options);
+ player.pause();
+ player.currentTime = 5;
+ var rgb = getComputedStyle(textarea).caretColor.match(/\d+/g);
+ /* Only testing that the rgb value is some intermediary value,
+ but not checking which, as we only care that the value is interpolated,
+ not about the numerical accuracy of interpolation,
+ which is something tests for the animation spec ought to worry about. */
+ assert_true( rgb[0] < 255 && rgb[0] > 0, "the red channel is interpolated");
+ assert_true( rgb[1] < 255 && rgb[1] > 0, "the green channel is interpolated");
+ assert_true( rgb[2] < 255 && rgb[2] > 0, "the blue channel is interpolated");
+ }, "caret-color: currentcolor is interpolable");
+</script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/caret-color-021.html b/testing/web-platform/tests/css/css-ui/caret-color-021.html
new file mode 100644
index 0000000000..9dee289348
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/caret-color-021.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Default caret-color test animation</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#caret-color">
+<link rel="help" href="https://www.w3.org/TR/css-animations-1/#animation">
+<link rel="help" href="https://www.w3.org/TR/css3-color/#color0">
+<meta name="assert" content="Test checks that the default value for caret-color property, which is 'auto', is not interpolable.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+ @keyframes caret-color-to-lime {
+ to { caret-color: lime; }
+ }
+
+ #textarea {
+ color: magenta;
+ animation: caret-color-to-lime 2s -1s paused;
+ }
+</style>
+<body>
+ <textarea id="textarea"></textarea>
+ <div id=log></div>
+
+ <script>
+ test(
+ function(){
+ var textarea = document.getElementById("textarea");
+ assert_equals(getComputedStyle(textarea).caretColor, 'rgb(0, 255, 0)');
+ }, "Default caret-color is not interpolable");
+</script>
+</body>
+
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-button-ref.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-button-ref.html
new file mode 100644
index 0000000000..9007ecb7fb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-button-ref.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Reference: Compute kind of widget - fallback - button</title>
+<style>
+ #container { width: 500px; }
+ button {
+ appearance: none;
+ }
+</style>
+<div id="container">
+ <button>button</button>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-checkbox-input-ref.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-checkbox-input-ref.html
new file mode 100644
index 0000000000..d969a759a0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-checkbox-input-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Reference: Compute kind of widget - fallback - checkbox-input</title>
+<style>
+ #container { width: 500px; }
+</style>
+<div id="container">
+ <input type="checkbox">
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-color-input-ref.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-color-input-ref.html
new file mode 100644
index 0000000000..cd6380bc1f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-color-input-ref.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Reference: Compute kind of widget - fallback - color-input</title>
+<style>
+ #container { width: 500px; }
+ input[type=color] {
+ appearance: none;
+ }
+</style>
+<div id="container">
+ <input type="color">
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-input-button-ref.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-input-button-ref.html
new file mode 100644
index 0000000000..02380ae7ed
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-input-button-ref.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Reference: Compute kind of widget - fallback - input-button</title>
+<style>
+ #container { width: 500px; }
+ input[type=button] {
+ appearance: none;
+ }
+</style>
+<div id="container">
+ <input type="button" value="input-button">
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-input-reset-ref.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-input-reset-ref.html
new file mode 100644
index 0000000000..6899e7102c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-input-reset-ref.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Reference: Compute kind of widget - fallback - input-reset</title>
+<style>
+ #container { width: 500px; }
+ input[type=reset] {
+ appearance: none;
+ }
+</style>
+<div id="container">
+ <input type="reset" value="input-reset">
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-input-search-ref.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-input-search-ref.html
new file mode 100644
index 0000000000..5d49037288
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-input-search-ref.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Reference: Compute kind of widget - fallback - input-search</title>
+<style>
+ #container { width: 500px; }
+ input[type=search] {
+ appearance: none;
+ }
+</style>
+<div id="container">
+ <input type="search" value="input-search">
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-input-search-text-ref.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-input-search-text-ref.html
new file mode 100644
index 0000000000..5918616f5d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-input-search-text-ref.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Reference: Compute kind of widget - fallback - input-search-text</title>
+<style>
+ #container { width: 500px; }
+ input[type=search] {
+ appearance: none;
+ }
+</style>
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-input-submit-ref.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-input-submit-ref.html
new file mode 100644
index 0000000000..3ceb54959e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-input-submit-ref.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Reference: Compute kind of widget - fallback - input-submit</title>
+<style>
+ #container { width: 500px; }
+ input[type=submit] {
+ appearance: none;
+ }
+</style>
+<div id="container">
+ <input type="submit" value="input-submit">
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-input-text-ref.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-input-text-ref.html
new file mode 100644
index 0000000000..ad8dcc2289
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-input-text-ref.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Reference: Compute kind of widget - fallback - input-text</title>
+<style>
+ #container { width: 500px; }
+ input[type=text] {
+ appearance: none;
+ }
+</style>
+<div id="container">
+ <input type="text" value="input-text">
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-link-ref.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-link-ref.html
new file mode 100644
index 0000000000..6d36dfdce4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-link-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Reference: Compute kind of widget - fallback - link</title>
+<style>
+ #container { width: 500px; }
+</style>
+<div id="container">
+ <a>a</a>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-meter-ref.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-meter-ref.html
new file mode 100644
index 0000000000..43b5825547
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-meter-ref.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Reference: Compute kind of widget - fallback - meter</title>
+<style>
+ #container { width: 500px; }
+ meter {
+ appearance: none;
+ }
+</style>
+<div id="container">
+ <meter value=0.5></meter>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-progress-ref.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-progress-ref.html
new file mode 100644
index 0000000000..20bf38150d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-progress-ref.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Reference: Compute kind of widget - fallback</title>
+<style>
+ #container { width: 500px; }
+ progress {
+ appearance: none;
+ }
+</style>
+<div id="container">
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-props-revert-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-props-revert-001.html
new file mode 100644
index 0000000000..a91d2a736a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-props-revert-001.html
@@ -0,0 +1,82 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: 'revert' keyword for properties that disable native appearance for widgets</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes the tested property with value 'revert'.">
+<link rel="match" href="compute-kind-widget-no-fallback-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * {
+ background-color: revert;
+ border-top-color: revert;
+ border-top-style: revert;
+ border-top-width: revert;
+ border-right-color: revert;
+ border-right-style: revert;
+ border-right-width: revert;
+ border-bottom-color: revert;
+ border-bottom-style: revert;
+ border-bottom-width: revert;
+ border-left-color: revert;
+ border-left-style: revert;
+ border-left-width: revert;
+ border-block-start-color: revert;
+ border-block-end-color: revert;
+ border-inline-start-color: revert;
+ border-inline-end-color: revert;
+ border-block-start-style: revert;
+ border-block-end-style: revert;
+ border-inline-start-style: revert;
+ border-inline-end-style: revert;
+ border-block-start-width: revert;
+ border-block-end-width: revert;
+ border-inline-start-width: revert;
+ border-inline-end-width: revert;
+ background-image: revert;
+ background-attachment: revert;
+ background-position: revert;
+ background-clip: revert;
+ background-origin: revert;
+ background-size: revert;
+ border-image-source: revert;
+ border-image-slice: revert;
+ border-image-width: revert;
+ border-image-outset: revert;
+ border-image-repeat: revert;
+ border-top-left-radius: revert;
+ border-top-right-radius: revert;
+ border-bottom-right-radius: revert;
+ border-bottom-left-radius: revert;
+ border-start-start-radius: revert;
+ border-start-end-radius: revert;
+ border-end-start-radius: revert;
+ border-end-end-radius: revert;
+ }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a>a</a>
+ <button id="button">button</button>
+ <input id="button-input" type="button" value="input-button">
+ <input id="submit-input" type="submit" value="input-submit">
+ <input id="reset-input" type="reset" value="input-reset">
+
+ <input id="text-input" type="text" value="input-text">
+ <input id="search-text-input" type="search" value="input-search-text">
+ <input id="search-input" type="search" value="input-search">
+
+ <input id="range-input" type="range">
+ <input id="checkbox-input" type="checkbox">
+ <input id="radio-input" type="radio">
+ <input id="color-input" type="color">
+
+ <textarea id="textarea">textarea</textarea>
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+ <meter id="meter" value=0.5></meter>
+ <progress id="progress" value=0.5></progress>
+</div>
+
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-radio-input-ref.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-radio-input-ref.html
new file mode 100644
index 0000000000..3654e6b72f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-radio-input-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Reference: Compute kind of widget - fallback - radio-input</title>
+<style>
+ #container { width: 500px; }
+</style>
+<div id="container">
+ <input type="radio">
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-range-ref.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-range-ref.html
new file mode 100644
index 0000000000..ea8f2a0279
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-range-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Reference: Compute kind of widget - fallback - range</title>
+<style>
+ #container { width: 500px; }
+</style>
+<div id="container">
+ <input type="range">
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-select-dropdown-box-ref.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-select-dropdown-box-ref.html
new file mode 100644
index 0000000000..bb038c8c3d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-select-dropdown-box-ref.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Reference: Compute kind of widget - fallback - select-dropdown-box</title>
+<style>
+ #container { width: 500px; }
+ #select-dropdown-box { appearance: none; appearance: menulist-button; }
+</style>
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-select-listbox-ref.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-select-listbox-ref.html
new file mode 100644
index 0000000000..46feae487f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-select-listbox-ref.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Reference: Compute kind of widget - fallback - select-listbox</title>
+<style>
+ #container { width: 500px; }
+ #select-listbox {
+ appearance: none;
+ }
+</style>
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-select-menulist-button-ref.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-select-menulist-button-ref.html
new file mode 100644
index 0000000000..6f3ca4f5a1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-select-menulist-button-ref.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Reference: Compute kind of widget - fallback - select-menulist-button</title>
+<style>
+ #container { width: 500px; }
+ #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-textarea-ref.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-textarea-ref.html
new file mode 100644
index 0000000000..863e58a669
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-fallback-textarea-ref.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Reference: Compute kind of widget - fallback - textarea</title>
+<style>
+ #container { width: 500px; }
+ textarea {
+ appearance: none;
+ }
+</style>
+<div id="container">
+ <textarea>textarea</textarea>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-background-attachment-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-background-attachment-001.html
new file mode 100644
index 0000000000..065fc6dca6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-background-attachment-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-attachment disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-attachment.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-attachment";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-background-clip-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-background-clip-001.html
new file mode 100644
index 0000000000..7059583860
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-background-clip-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-clip disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-clip.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-clip";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-background-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-background-color-001.html
new file mode 100644
index 0000000000..bcef8dcd98
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-background-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-color disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-color.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-background-image-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-background-image-001.html
new file mode 100644
index 0000000000..c2ff3ad6df
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-background-image-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-image disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-image.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-image";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-background-origin-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-background-origin-001.html
new file mode 100644
index 0000000000..3e6a287e3f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-background-origin-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-origin disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-origin.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-origin";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-background-position-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-background-position-001.html
new file mode 100644
index 0000000000..8c35eb79fb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-background-position-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-position disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-position.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-position";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-background-size-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-background-size-001.html
new file mode 100644
index 0000000000..a177d5c50b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-background-size-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-size disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-size.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-size";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-block-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-block-end-color-001.html
new file mode 100644
index 0000000000..bc1220b566
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-block-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-color disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-block-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-block-end-style-001.html
new file mode 100644
index 0000000000..326ccec446
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-block-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-style disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-block-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-block-end-width-001.html
new file mode 100644
index 0000000000..6d88e2a8e4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-block-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-width disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-block-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-block-start-color-001.html
new file mode 100644
index 0000000000..30f3867c5e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-block-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-color disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-block-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-block-start-style-001.html
new file mode 100644
index 0000000000..69f21ffab2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-block-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-style disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-block-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-block-start-width-001.html
new file mode 100644
index 0000000000..05b17053be
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-block-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-width disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-bottom-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-bottom-color-001.html
new file mode 100644
index 0000000000..d18b6a1173
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-bottom-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-color disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-color.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-bottom-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-bottom-left-radius-001.html
new file mode 100644
index 0000000000..1da373a781
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-bottom-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-left-radius disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-bottom-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-bottom-right-radius-001.html
new file mode 100644
index 0000000000..cd2ccf665f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-bottom-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-right-radius disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-bottom-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-bottom-style-001.html
new file mode 100644
index 0000000000..b7aad05558
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-bottom-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-style disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-style.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-bottom-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-bottom-width-001.html
new file mode 100644
index 0000000000..ecdf09ac0d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-bottom-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-width disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-width.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-end-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-end-end-radius-001.html
new file mode 100644
index 0000000000..b7a4342845
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-end-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-end-radius disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-end-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-end-start-radius-001.html
new file mode 100644
index 0000000000..3756b2a201
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-end-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-start-radius disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-image-outset-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-image-outset-001.html
new file mode 100644
index 0000000000..8ad71780de
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-image-outset-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-outset disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-outset.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-outset";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-image-repeat-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-image-repeat-001.html
new file mode 100644
index 0000000000..a212ee7ef3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-image-repeat-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-repeat disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-repeat.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-repeat";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-image-slice-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-image-slice-001.html
new file mode 100644
index 0000000000..d3f87ebe5a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-image-slice-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-slice disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-slice.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-slice";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-image-source-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-image-source-001.html
new file mode 100644
index 0000000000..86ec41a3ff
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-image-source-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-source disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-source.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-source";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-image-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-image-width-001.html
new file mode 100644
index 0000000000..53df9ea152
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-image-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-width disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-width.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-inline-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-inline-end-color-001.html
new file mode 100644
index 0000000000..85079f5c41
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-inline-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-color disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-inline-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-inline-end-style-001.html
new file mode 100644
index 0000000000..ce94d07364
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-inline-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-style disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-inline-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-inline-end-width-001.html
new file mode 100644
index 0000000000..ea361edbab
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-inline-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-width disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-inline-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-inline-start-color-001.html
new file mode 100644
index 0000000000..7bbbbf97a0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-inline-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-color disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-inline-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-inline-start-style-001.html
new file mode 100644
index 0000000000..0ab244c534
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-inline-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-style disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-inline-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-inline-start-width-001.html
new file mode 100644
index 0000000000..a2fe2f5a70
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-inline-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-width disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-left-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-left-color-001.html
new file mode 100644
index 0000000000..ca8e684b4e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-left-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-color disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-color.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-left-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-left-style-001.html
new file mode 100644
index 0000000000..e44cf3a2b6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-left-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-style disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-style.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-left-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-left-width-001.html
new file mode 100644
index 0000000000..561c51de03
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-left-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-width disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-width.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-right-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-right-color-001.html
new file mode 100644
index 0000000000..1edc31d98d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-right-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-color disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-color.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-right-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-right-style-001.html
new file mode 100644
index 0000000000..79a59df4cb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-right-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-style disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-style.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-right-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-right-width-001.html
new file mode 100644
index 0000000000..5125890ff0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-right-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-width disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-width.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-start-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-start-end-radius-001.html
new file mode 100644
index 0000000000..39972ab69e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-start-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-end-radius disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-start-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-start-start-radius-001.html
new file mode 100644
index 0000000000..47e454e4ca
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-start-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-start-radius disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-top-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-top-color-001.html
new file mode 100644
index 0000000000..6a331379ae
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-top-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-color disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-color.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-top-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-top-left-radius-001.html
new file mode 100644
index 0000000000..83d5437b2c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-top-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-left-radius disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-top-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-top-right-radius-001.html
new file mode 100644
index 0000000000..ad7801693c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-top-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-right-radius disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-top-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-top-style-001.html
new file mode 100644
index 0000000000..41b55bdc10
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-top-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-style disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-style.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-top-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-top-width-001.html
new file mode 100644
index 0000000000..ec22310531
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-button-border-top-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-width disables native appearance for button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-width.">
+<link rel="match" href="../compute-kind-widget-fallback-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <button id="button">button</button>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-background-attachment-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-background-attachment-001.html
new file mode 100644
index 0000000000..854146dbed
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-background-attachment-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-attachment disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-attachment.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-attachment";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-background-clip-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-background-clip-001.html
new file mode 100644
index 0000000000..c58d84534d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-background-clip-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-clip disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-clip.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-clip";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-background-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-background-color-001.html
new file mode 100644
index 0000000000..e1d5e7379a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-background-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-color disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-color.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-background-image-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-background-image-001.html
new file mode 100644
index 0000000000..c37517e78f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-background-image-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-image disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-image.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-image";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-background-origin-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-background-origin-001.html
new file mode 100644
index 0000000000..8a7f9502b0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-background-origin-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-origin disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-origin.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-origin";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-background-position-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-background-position-001.html
new file mode 100644
index 0000000000..3edc2785ed
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-background-position-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-position disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-position.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-position";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-background-size-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-background-size-001.html
new file mode 100644
index 0000000000..94816e45ae
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-background-size-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-size disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-size.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-size";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-block-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-block-end-color-001.html
new file mode 100644
index 0000000000..fe6e5c970e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-block-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-color disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-block-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-block-end-style-001.html
new file mode 100644
index 0000000000..489c662119
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-block-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-style disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-block-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-block-end-width-001.html
new file mode 100644
index 0000000000..f257590b5f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-block-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-width disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-block-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-block-start-color-001.html
new file mode 100644
index 0000000000..d1b1c63bb2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-block-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-color disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-block-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-block-start-style-001.html
new file mode 100644
index 0000000000..6da6d53162
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-block-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-style disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-block-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-block-start-width-001.html
new file mode 100644
index 0000000000..c18824f102
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-block-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-width disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-bottom-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-bottom-color-001.html
new file mode 100644
index 0000000000..d8dde9fa77
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-bottom-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-color disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-color.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-bottom-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-bottom-left-radius-001.html
new file mode 100644
index 0000000000..ea8b93a771
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-bottom-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-left-radius disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-bottom-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-bottom-right-radius-001.html
new file mode 100644
index 0000000000..4778156079
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-bottom-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-right-radius disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-bottom-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-bottom-style-001.html
new file mode 100644
index 0000000000..f4ccb3ee9c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-bottom-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-style disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-style.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-bottom-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-bottom-width-001.html
new file mode 100644
index 0000000000..dcc9e39f33
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-bottom-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-width disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-width.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-end-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-end-end-radius-001.html
new file mode 100644
index 0000000000..9f22001410
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-end-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-end-radius disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-end-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-end-start-radius-001.html
new file mode 100644
index 0000000000..453d687a8f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-end-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-start-radius disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-image-outset-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-image-outset-001.html
new file mode 100644
index 0000000000..1102fce152
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-image-outset-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-outset disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-outset.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-outset";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-image-repeat-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-image-repeat-001.html
new file mode 100644
index 0000000000..7b821272c7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-image-repeat-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-repeat disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-repeat.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-repeat";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-image-slice-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-image-slice-001.html
new file mode 100644
index 0000000000..d7694d6778
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-image-slice-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-slice disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-slice.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-slice";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-image-source-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-image-source-001.html
new file mode 100644
index 0000000000..0e274628f3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-image-source-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-source disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-source.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-source";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-image-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-image-width-001.html
new file mode 100644
index 0000000000..c485feab75
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-image-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-width disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-width.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-inline-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-inline-end-color-001.html
new file mode 100644
index 0000000000..0220ac227c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-inline-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-color disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-inline-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-inline-end-style-001.html
new file mode 100644
index 0000000000..83f0ee6dc7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-inline-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-style disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-inline-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-inline-end-width-001.html
new file mode 100644
index 0000000000..aca82890ed
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-inline-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-width disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-inline-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-inline-start-color-001.html
new file mode 100644
index 0000000000..7c3ea0e32c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-inline-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-color disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-inline-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-inline-start-style-001.html
new file mode 100644
index 0000000000..329b717ca0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-inline-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-style disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-inline-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-inline-start-width-001.html
new file mode 100644
index 0000000000..9d5ca5f95a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-inline-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-width disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-left-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-left-color-001.html
new file mode 100644
index 0000000000..00397b9cd3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-left-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-color disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-color.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-left-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-left-style-001.html
new file mode 100644
index 0000000000..415c45d8ae
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-left-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-style disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-style.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-left-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-left-width-001.html
new file mode 100644
index 0000000000..0653e96092
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-left-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-width disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-width.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-right-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-right-color-001.html
new file mode 100644
index 0000000000..f17035b651
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-right-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-color disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-color.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-right-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-right-style-001.html
new file mode 100644
index 0000000000..fd96b80bfa
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-right-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-style disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-style.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-right-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-right-width-001.html
new file mode 100644
index 0000000000..9eb0bfd483
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-right-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-width disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-width.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-start-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-start-end-radius-001.html
new file mode 100644
index 0000000000..c6f7b9c70f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-start-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-end-radius disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-start-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-start-start-radius-001.html
new file mode 100644
index 0000000000..c3473dff43
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-start-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-start-radius disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-top-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-top-color-001.html
new file mode 100644
index 0000000000..40671ee01e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-top-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-color disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-color.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-top-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-top-left-radius-001.html
new file mode 100644
index 0000000000..bf8cb7150a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-top-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-left-radius disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-top-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-top-right-radius-001.html
new file mode 100644
index 0000000000..bbaed9a391
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-top-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-right-radius disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-top-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-top-style-001.html
new file mode 100644
index 0000000000..bb9b393d5d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-top-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-style disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-style.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-top-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-top-width-001.html
new file mode 100644
index 0000000000..3260a9b13d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-checkbox-input-border-top-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-width disables native appearance for checkbox-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-width.">
+<link rel="match" href="../compute-kind-widget-fallback-checkbox-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="checkbox-input" type="checkbox">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-background-attachment-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-background-attachment-001.html
new file mode 100644
index 0000000000..a62ebcba16
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-background-attachment-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-attachment disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-attachment.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-attachment";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-background-clip-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-background-clip-001.html
new file mode 100644
index 0000000000..0da878e3c8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-background-clip-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-clip disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-clip.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-clip";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-background-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-background-color-001.html
new file mode 100644
index 0000000000..3adca19760
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-background-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-color disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-color.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-background-image-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-background-image-001.html
new file mode 100644
index 0000000000..79d16f7a5f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-background-image-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-image disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-image.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-image";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-background-origin-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-background-origin-001.html
new file mode 100644
index 0000000000..30be831c55
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-background-origin-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-origin disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-origin.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-origin";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-background-position-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-background-position-001.html
new file mode 100644
index 0000000000..a72860779a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-background-position-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-position disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-position.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-position";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-background-size-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-background-size-001.html
new file mode 100644
index 0000000000..68f34df768
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-background-size-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-size disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-size.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-size";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-block-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-block-end-color-001.html
new file mode 100644
index 0000000000..7ab8c50eda
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-block-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-color disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-block-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-block-end-style-001.html
new file mode 100644
index 0000000000..5fef1705dd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-block-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-style disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-block-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-block-end-width-001.html
new file mode 100644
index 0000000000..de753d9cf5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-block-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-width disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-block-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-block-start-color-001.html
new file mode 100644
index 0000000000..639e53697b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-block-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-color disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-block-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-block-start-style-001.html
new file mode 100644
index 0000000000..66138c5954
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-block-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-style disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-block-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-block-start-width-001.html
new file mode 100644
index 0000000000..7e338d3d27
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-block-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-width disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-bottom-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-bottom-color-001.html
new file mode 100644
index 0000000000..33e55cc3b7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-bottom-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-color disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-color.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-bottom-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-bottom-left-radius-001.html
new file mode 100644
index 0000000000..70eec00b9a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-bottom-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-left-radius disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-bottom-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-bottom-right-radius-001.html
new file mode 100644
index 0000000000..196edd37f0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-bottom-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-right-radius disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-bottom-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-bottom-style-001.html
new file mode 100644
index 0000000000..483a2008f2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-bottom-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-style disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-style.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-bottom-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-bottom-width-001.html
new file mode 100644
index 0000000000..0f6a26e547
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-bottom-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-width disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-width.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-end-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-end-end-radius-001.html
new file mode 100644
index 0000000000..877568e595
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-end-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-end-radius disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-end-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-end-start-radius-001.html
new file mode 100644
index 0000000000..3b553d1664
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-end-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-start-radius disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-image-outset-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-image-outset-001.html
new file mode 100644
index 0000000000..9aca0eb08c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-image-outset-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-outset disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-outset.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-outset";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-image-repeat-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-image-repeat-001.html
new file mode 100644
index 0000000000..2195aa4d09
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-image-repeat-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-repeat disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-repeat.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-repeat";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-image-slice-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-image-slice-001.html
new file mode 100644
index 0000000000..b2d5a70710
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-image-slice-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-slice disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-slice.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-slice";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-image-source-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-image-source-001.html
new file mode 100644
index 0000000000..5a4f6f54ed
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-image-source-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-source disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-source.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-source";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-image-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-image-width-001.html
new file mode 100644
index 0000000000..394163c402
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-image-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-width disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-width.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-inline-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-inline-end-color-001.html
new file mode 100644
index 0000000000..c8beca67c4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-inline-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-color disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-inline-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-inline-end-style-001.html
new file mode 100644
index 0000000000..2cca2308d3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-inline-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-style disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-inline-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-inline-end-width-001.html
new file mode 100644
index 0000000000..1e78d303b3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-inline-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-width disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-inline-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-inline-start-color-001.html
new file mode 100644
index 0000000000..dc78893a4e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-inline-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-color disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-inline-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-inline-start-style-001.html
new file mode 100644
index 0000000000..69fc22e3b6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-inline-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-style disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-inline-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-inline-start-width-001.html
new file mode 100644
index 0000000000..e726ac45a1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-inline-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-width disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-left-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-left-color-001.html
new file mode 100644
index 0000000000..06123f7d3f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-left-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-color disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-color.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-left-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-left-style-001.html
new file mode 100644
index 0000000000..8a467f2f02
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-left-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-style disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-style.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-left-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-left-width-001.html
new file mode 100644
index 0000000000..1631967fb4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-left-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-width disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-width.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-right-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-right-color-001.html
new file mode 100644
index 0000000000..3f80a29957
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-right-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-color disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-color.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-right-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-right-style-001.html
new file mode 100644
index 0000000000..47b974b4a9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-right-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-style disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-style.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-right-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-right-width-001.html
new file mode 100644
index 0000000000..7a640d231d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-right-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-width disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-width.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-start-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-start-end-radius-001.html
new file mode 100644
index 0000000000..836685bc1a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-start-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-end-radius disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-start-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-start-start-radius-001.html
new file mode 100644
index 0000000000..1b8d113fbe
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-start-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-start-radius disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-top-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-top-color-001.html
new file mode 100644
index 0000000000..3ca939ab72
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-top-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-color disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-color.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-top-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-top-left-radius-001.html
new file mode 100644
index 0000000000..6e789f088f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-top-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-left-radius disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-top-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-top-right-radius-001.html
new file mode 100644
index 0000000000..7f4b9195f8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-top-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-right-radius disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-top-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-top-style-001.html
new file mode 100644
index 0000000000..840f69afcc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-top-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-style disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-style.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-top-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-top-width-001.html
new file mode 100644
index 0000000000..886996b710
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-color-input-border-top-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-width disables native appearance for color-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-width.">
+<link rel="match" href="../compute-kind-widget-fallback-color-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="color-input" type="color">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-background-attachment-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-background-attachment-001.html
new file mode 100644
index 0000000000..7b112f084a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-background-attachment-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-attachment disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-attachment.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-attachment";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-background-clip-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-background-clip-001.html
new file mode 100644
index 0000000000..53f79ab38c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-background-clip-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-clip disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-clip.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-clip";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-background-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-background-color-001.html
new file mode 100644
index 0000000000..2209bae6c0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-background-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-color disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-background-image-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-background-image-001.html
new file mode 100644
index 0000000000..e385afe4af
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-background-image-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-image disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-image.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-image";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-background-origin-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-background-origin-001.html
new file mode 100644
index 0000000000..9d3386711f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-background-origin-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-origin disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-origin.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-origin";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-background-position-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-background-position-001.html
new file mode 100644
index 0000000000..6d70a3f546
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-background-position-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-position disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-position.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-position";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-background-size-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-background-size-001.html
new file mode 100644
index 0000000000..fabd5b383c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-background-size-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-size disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-size.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-size";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-block-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-block-end-color-001.html
new file mode 100644
index 0000000000..16b07513a5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-block-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-color disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-block-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-block-end-style-001.html
new file mode 100644
index 0000000000..c5941567e1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-block-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-style disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-block-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-block-end-width-001.html
new file mode 100644
index 0000000000..c189260b1b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-block-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-width disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-block-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-block-start-color-001.html
new file mode 100644
index 0000000000..f04c3729b7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-block-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-color disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-block-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-block-start-style-001.html
new file mode 100644
index 0000000000..41ba3b7c27
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-block-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-style disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-block-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-block-start-width-001.html
new file mode 100644
index 0000000000..9738cd8528
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-block-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-width disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-bottom-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-bottom-color-001.html
new file mode 100644
index 0000000000..f8d784aeb1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-bottom-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-color disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-bottom-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-bottom-left-radius-001.html
new file mode 100644
index 0000000000..cac8afec0a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-bottom-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-left-radius disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-bottom-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-bottom-right-radius-001.html
new file mode 100644
index 0000000000..3f64f28497
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-bottom-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-right-radius disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-bottom-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-bottom-style-001.html
new file mode 100644
index 0000000000..1d45f05661
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-bottom-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-style disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-bottom-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-bottom-width-001.html
new file mode 100644
index 0000000000..04065781f7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-bottom-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-width disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-end-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-end-end-radius-001.html
new file mode 100644
index 0000000000..8ce8dc3962
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-end-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-end-radius disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-end-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-end-start-radius-001.html
new file mode 100644
index 0000000000..8f1acf3c9f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-end-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-start-radius disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-image-outset-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-image-outset-001.html
new file mode 100644
index 0000000000..7bef870794
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-image-outset-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-outset disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-outset.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-outset";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-image-repeat-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-image-repeat-001.html
new file mode 100644
index 0000000000..fc3ebd45dd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-image-repeat-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-repeat disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-repeat.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-repeat";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-image-slice-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-image-slice-001.html
new file mode 100644
index 0000000000..b6c908f422
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-image-slice-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-slice disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-slice.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-slice";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-image-source-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-image-source-001.html
new file mode 100644
index 0000000000..44a4fbaa8c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-image-source-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-source disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-source.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-source";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-image-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-image-width-001.html
new file mode 100644
index 0000000000..39d018507c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-image-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-width disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-inline-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-inline-end-color-001.html
new file mode 100644
index 0000000000..313eab3d7b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-inline-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-color disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-inline-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-inline-end-style-001.html
new file mode 100644
index 0000000000..ce6cb72d03
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-inline-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-style disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-inline-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-inline-end-width-001.html
new file mode 100644
index 0000000000..31e4906531
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-inline-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-width disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-inline-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-inline-start-color-001.html
new file mode 100644
index 0000000000..60f8eeb08d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-inline-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-color disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-inline-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-inline-start-style-001.html
new file mode 100644
index 0000000000..927f0695ff
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-inline-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-style disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-inline-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-inline-start-width-001.html
new file mode 100644
index 0000000000..ebb88b67c5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-inline-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-width disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-left-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-left-color-001.html
new file mode 100644
index 0000000000..eaeeddc8bb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-left-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-color disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-left-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-left-style-001.html
new file mode 100644
index 0000000000..171638f609
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-left-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-style disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-left-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-left-width-001.html
new file mode 100644
index 0000000000..07b4ba5cf3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-left-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-width disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-right-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-right-color-001.html
new file mode 100644
index 0000000000..ee08a59604
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-right-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-color disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-right-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-right-style-001.html
new file mode 100644
index 0000000000..622da69d72
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-right-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-style disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-right-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-right-width-001.html
new file mode 100644
index 0000000000..cb0368dd05
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-right-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-width disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-start-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-start-end-radius-001.html
new file mode 100644
index 0000000000..ae98634e8c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-start-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-end-radius disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-start-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-start-start-radius-001.html
new file mode 100644
index 0000000000..45f7debe9d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-start-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-start-radius disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-top-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-top-color-001.html
new file mode 100644
index 0000000000..985b3d528e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-top-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-color disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-top-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-top-left-radius-001.html
new file mode 100644
index 0000000000..5b5636609c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-top-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-left-radius disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-top-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-top-right-radius-001.html
new file mode 100644
index 0000000000..f0b7989c73
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-top-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-right-radius disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-top-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-top-style-001.html
new file mode 100644
index 0000000000..b58218e3da
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-top-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-style disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-top-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-top-width-001.html
new file mode 100644
index 0000000000..e20e258e8a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-button-border-top-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-width disables native appearance for input-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="button-input" type="button" value="input-button">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-background-attachment-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-background-attachment-001.html
new file mode 100644
index 0000000000..a7845bc7dc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-background-attachment-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-attachment disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-attachment.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-attachment";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-background-clip-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-background-clip-001.html
new file mode 100644
index 0000000000..5bb8e7d5d2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-background-clip-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-clip disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-clip.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-clip";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-background-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-background-color-001.html
new file mode 100644
index 0000000000..1780d56a41
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-background-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-color disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-background-image-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-background-image-001.html
new file mode 100644
index 0000000000..07527ae7db
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-background-image-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-image disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-image.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-image";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-background-origin-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-background-origin-001.html
new file mode 100644
index 0000000000..4e5b6c68ce
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-background-origin-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-origin disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-origin.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-origin";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-background-position-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-background-position-001.html
new file mode 100644
index 0000000000..199e6465eb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-background-position-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-position disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-position.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-position";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-background-size-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-background-size-001.html
new file mode 100644
index 0000000000..82d54e0c10
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-background-size-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-size disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-size.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-size";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-block-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-block-end-color-001.html
new file mode 100644
index 0000000000..41038d2512
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-block-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-color disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-block-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-block-end-style-001.html
new file mode 100644
index 0000000000..9c326f1e4a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-block-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-style disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-block-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-block-end-width-001.html
new file mode 100644
index 0000000000..3f2611f0e8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-block-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-width disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-block-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-block-start-color-001.html
new file mode 100644
index 0000000000..a3252e39e6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-block-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-color disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-block-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-block-start-style-001.html
new file mode 100644
index 0000000000..6f73781413
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-block-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-style disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-block-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-block-start-width-001.html
new file mode 100644
index 0000000000..1a671be321
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-block-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-width disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-bottom-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-bottom-color-001.html
new file mode 100644
index 0000000000..5ac0db7d1e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-bottom-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-color disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-bottom-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-bottom-left-radius-001.html
new file mode 100644
index 0000000000..df3608a14a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-bottom-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-left-radius disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-bottom-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-bottom-right-radius-001.html
new file mode 100644
index 0000000000..3cc95934b4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-bottom-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-right-radius disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-bottom-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-bottom-style-001.html
new file mode 100644
index 0000000000..b146476a50
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-bottom-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-style disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-bottom-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-bottom-width-001.html
new file mode 100644
index 0000000000..00dfbddbe6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-bottom-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-width disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-end-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-end-end-radius-001.html
new file mode 100644
index 0000000000..34eaf07fd7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-end-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-end-radius disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-end-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-end-start-radius-001.html
new file mode 100644
index 0000000000..42aa29cada
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-end-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-start-radius disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-image-outset-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-image-outset-001.html
new file mode 100644
index 0000000000..368bb3a7c7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-image-outset-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-outset disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-outset.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-outset";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-image-repeat-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-image-repeat-001.html
new file mode 100644
index 0000000000..5f0ba37f9d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-image-repeat-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-repeat disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-repeat.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-repeat";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-image-slice-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-image-slice-001.html
new file mode 100644
index 0000000000..c611ad59b7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-image-slice-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-slice disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-slice.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-slice";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-image-source-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-image-source-001.html
new file mode 100644
index 0000000000..f84fcfc0fc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-image-source-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-source disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-source.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-source";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-image-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-image-width-001.html
new file mode 100644
index 0000000000..1936517741
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-image-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-width disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-inline-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-inline-end-color-001.html
new file mode 100644
index 0000000000..db6e2d64c2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-inline-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-color disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-inline-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-inline-end-style-001.html
new file mode 100644
index 0000000000..13502447a9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-inline-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-style disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-inline-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-inline-end-width-001.html
new file mode 100644
index 0000000000..25121c822a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-inline-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-width disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-inline-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-inline-start-color-001.html
new file mode 100644
index 0000000000..f01b339b37
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-inline-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-color disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-inline-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-inline-start-style-001.html
new file mode 100644
index 0000000000..3ac0e47260
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-inline-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-style disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-inline-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-inline-start-width-001.html
new file mode 100644
index 0000000000..7e0c23adc7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-inline-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-width disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-left-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-left-color-001.html
new file mode 100644
index 0000000000..6309f000f3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-left-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-color disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-left-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-left-style-001.html
new file mode 100644
index 0000000000..c502e833a6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-left-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-style disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-left-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-left-width-001.html
new file mode 100644
index 0000000000..7c8e95dbea
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-left-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-width disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-right-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-right-color-001.html
new file mode 100644
index 0000000000..2bbbcf3584
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-right-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-color disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-right-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-right-style-001.html
new file mode 100644
index 0000000000..4b1ea45088
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-right-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-style disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-right-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-right-width-001.html
new file mode 100644
index 0000000000..02b93b0b7b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-right-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-width disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-start-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-start-end-radius-001.html
new file mode 100644
index 0000000000..4beeb88981
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-start-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-end-radius disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-start-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-start-start-radius-001.html
new file mode 100644
index 0000000000..019b6a52e5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-start-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-start-radius disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-top-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-top-color-001.html
new file mode 100644
index 0000000000..6facf31f99
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-top-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-color disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-top-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-top-left-radius-001.html
new file mode 100644
index 0000000000..2ba3e038dd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-top-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-left-radius disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-top-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-top-right-radius-001.html
new file mode 100644
index 0000000000..d15f23413b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-top-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-right-radius disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-top-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-top-style-001.html
new file mode 100644
index 0000000000..d5bebef7a3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-top-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-style disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-top-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-top-width-001.html
new file mode 100644
index 0000000000..e705cd422d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-reset-border-top-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-width disables native appearance for input-reset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-reset-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="reset-input" type="reset" value="input-reset">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-background-attachment-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-background-attachment-001.html
new file mode 100644
index 0000000000..cd69159ee9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-background-attachment-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-attachment disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-attachment.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-attachment";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-background-clip-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-background-clip-001.html
new file mode 100644
index 0000000000..1343ebcf0c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-background-clip-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-clip disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-clip.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-clip";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-background-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-background-color-001.html
new file mode 100644
index 0000000000..882ca79998
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-background-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-color disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-background-image-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-background-image-001.html
new file mode 100644
index 0000000000..769cf45b9f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-background-image-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-image disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-image.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-image";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-background-origin-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-background-origin-001.html
new file mode 100644
index 0000000000..035cfdf25c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-background-origin-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-origin disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-origin.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-origin";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-background-position-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-background-position-001.html
new file mode 100644
index 0000000000..5267fd2c78
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-background-position-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-position disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-position.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-position";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-background-size-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-background-size-001.html
new file mode 100644
index 0000000000..73aca9954a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-background-size-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-size disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-size.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-size";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-block-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-block-end-color-001.html
new file mode 100644
index 0000000000..9d954d5714
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-block-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-color disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-block-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-block-end-style-001.html
new file mode 100644
index 0000000000..81761e4671
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-block-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-style disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-block-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-block-end-width-001.html
new file mode 100644
index 0000000000..e6b37c9b78
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-block-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-width disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-block-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-block-start-color-001.html
new file mode 100644
index 0000000000..7bed3fc399
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-block-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-color disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-block-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-block-start-style-001.html
new file mode 100644
index 0000000000..854d6fb98e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-block-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-style disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-block-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-block-start-width-001.html
new file mode 100644
index 0000000000..9ad91b7ba4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-block-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-width disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-bottom-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-bottom-color-001.html
new file mode 100644
index 0000000000..093c18c703
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-bottom-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-color disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-bottom-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-bottom-left-radius-001.html
new file mode 100644
index 0000000000..a33640e2a8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-bottom-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-left-radius disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-bottom-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-bottom-right-radius-001.html
new file mode 100644
index 0000000000..21ec7d1f87
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-bottom-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-right-radius disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-bottom-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-bottom-style-001.html
new file mode 100644
index 0000000000..26b31f9331
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-bottom-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-style disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-bottom-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-bottom-width-001.html
new file mode 100644
index 0000000000..677a04ef16
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-bottom-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-width disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-end-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-end-end-radius-001.html
new file mode 100644
index 0000000000..426b75464e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-end-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-end-radius disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-end-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-end-start-radius-001.html
new file mode 100644
index 0000000000..58f7487c99
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-end-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-start-radius disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-image-outset-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-image-outset-001.html
new file mode 100644
index 0000000000..fe1d1f0cc2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-image-outset-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-outset disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-outset.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-outset";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-image-repeat-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-image-repeat-001.html
new file mode 100644
index 0000000000..611aaadce8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-image-repeat-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-repeat disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-repeat.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-repeat";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-image-slice-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-image-slice-001.html
new file mode 100644
index 0000000000..fbd35beef9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-image-slice-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-slice disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-slice.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-slice";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-image-source-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-image-source-001.html
new file mode 100644
index 0000000000..73b90e28b0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-image-source-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-source disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-source.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-source";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-image-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-image-width-001.html
new file mode 100644
index 0000000000..53be3f24e1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-image-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-width disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-inline-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-inline-end-color-001.html
new file mode 100644
index 0000000000..5cef20ff8b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-inline-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-color disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-inline-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-inline-end-style-001.html
new file mode 100644
index 0000000000..01c62b5120
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-inline-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-style disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-inline-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-inline-end-width-001.html
new file mode 100644
index 0000000000..279ea4bd9d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-inline-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-width disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-inline-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-inline-start-color-001.html
new file mode 100644
index 0000000000..b4e93e5fb0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-inline-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-color disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-inline-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-inline-start-style-001.html
new file mode 100644
index 0000000000..279a809043
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-inline-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-style disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-inline-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-inline-start-width-001.html
new file mode 100644
index 0000000000..99694bc67b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-inline-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-width disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-left-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-left-color-001.html
new file mode 100644
index 0000000000..608d5d2664
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-left-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-color disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-left-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-left-style-001.html
new file mode 100644
index 0000000000..af85417326
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-left-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-style disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-left-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-left-width-001.html
new file mode 100644
index 0000000000..c1dcc4fb9e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-left-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-width disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-right-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-right-color-001.html
new file mode 100644
index 0000000000..b2c2200537
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-right-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-color disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-right-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-right-style-001.html
new file mode 100644
index 0000000000..890770c872
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-right-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-style disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-right-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-right-width-001.html
new file mode 100644
index 0000000000..8128bb539f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-right-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-width disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-start-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-start-end-radius-001.html
new file mode 100644
index 0000000000..c9dc8fc034
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-start-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-end-radius disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-start-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-start-start-radius-001.html
new file mode 100644
index 0000000000..fe0f50c862
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-start-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-start-radius disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-top-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-top-color-001.html
new file mode 100644
index 0000000000..8e19135548
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-top-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-color disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-top-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-top-left-radius-001.html
new file mode 100644
index 0000000000..00706e8e18
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-top-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-left-radius disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-top-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-top-right-radius-001.html
new file mode 100644
index 0000000000..d9eff0a7ed
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-top-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-right-radius disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-top-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-top-style-001.html
new file mode 100644
index 0000000000..687a156374
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-top-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-style disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-top-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-top-width-001.html
new file mode 100644
index 0000000000..8d21da1745
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-border-top-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-width disables native appearance for input-search</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-input" type="search" value="input-search">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-background-attachment-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-background-attachment-001.html
new file mode 100644
index 0000000000..d686b71ecb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-background-attachment-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-attachment disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-attachment.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-attachment";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-background-clip-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-background-clip-001.html
new file mode 100644
index 0000000000..5e5bb98b73
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-background-clip-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-clip disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-clip.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-clip";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-background-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-background-color-001.html
new file mode 100644
index 0000000000..a9a4f9ce47
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-background-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-color disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-background-image-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-background-image-001.html
new file mode 100644
index 0000000000..67ce5d447a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-background-image-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-image disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-image.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-image";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-background-origin-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-background-origin-001.html
new file mode 100644
index 0000000000..d64ea1c55c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-background-origin-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-origin disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-origin.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-origin";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-background-position-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-background-position-001.html
new file mode 100644
index 0000000000..47328fa550
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-background-position-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-position disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-position.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-position";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-background-size-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-background-size-001.html
new file mode 100644
index 0000000000..801451bc4a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-background-size-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-size disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-size.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-size";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-block-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-block-end-color-001.html
new file mode 100644
index 0000000000..35c2b259aa
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-block-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-color disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-block-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-block-end-style-001.html
new file mode 100644
index 0000000000..02418ca51a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-block-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-style disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-block-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-block-end-width-001.html
new file mode 100644
index 0000000000..76ba5d545b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-block-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-width disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-block-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-block-start-color-001.html
new file mode 100644
index 0000000000..5aa72d0032
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-block-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-color disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-block-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-block-start-style-001.html
new file mode 100644
index 0000000000..5d6f0deb64
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-block-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-style disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-block-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-block-start-width-001.html
new file mode 100644
index 0000000000..e1a0fe22c2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-block-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-width disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-bottom-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-bottom-color-001.html
new file mode 100644
index 0000000000..0429d4cf7b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-bottom-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-color disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-bottom-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-bottom-left-radius-001.html
new file mode 100644
index 0000000000..1ff1f9cf1c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-bottom-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-left-radius disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-bottom-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-bottom-right-radius-001.html
new file mode 100644
index 0000000000..1a7b7521fd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-bottom-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-right-radius disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-bottom-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-bottom-style-001.html
new file mode 100644
index 0000000000..f33d4b5424
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-bottom-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-style disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-bottom-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-bottom-width-001.html
new file mode 100644
index 0000000000..f60665b61a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-bottom-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-width disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-end-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-end-end-radius-001.html
new file mode 100644
index 0000000000..5410992260
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-end-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-end-radius disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-end-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-end-start-radius-001.html
new file mode 100644
index 0000000000..207216e61c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-end-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-start-radius disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-image-outset-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-image-outset-001.html
new file mode 100644
index 0000000000..e54d46aeb2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-image-outset-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-outset disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-outset.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-outset";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-image-repeat-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-image-repeat-001.html
new file mode 100644
index 0000000000..c58d2436fd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-image-repeat-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-repeat disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-repeat.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-repeat";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-image-slice-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-image-slice-001.html
new file mode 100644
index 0000000000..3d69aace32
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-image-slice-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-slice disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-slice.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-slice";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-image-source-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-image-source-001.html
new file mode 100644
index 0000000000..0300383427
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-image-source-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-source disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-source.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-source";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-image-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-image-width-001.html
new file mode 100644
index 0000000000..51b084ec8b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-image-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-width disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-inline-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-inline-end-color-001.html
new file mode 100644
index 0000000000..b002409c93
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-inline-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-color disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-inline-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-inline-end-style-001.html
new file mode 100644
index 0000000000..6ecfaaeeaf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-inline-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-style disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-inline-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-inline-end-width-001.html
new file mode 100644
index 0000000000..33d53e4cb5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-inline-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-width disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-inline-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-inline-start-color-001.html
new file mode 100644
index 0000000000..8a936bb270
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-inline-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-color disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-inline-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-inline-start-style-001.html
new file mode 100644
index 0000000000..5d43ac916b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-inline-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-style disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-inline-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-inline-start-width-001.html
new file mode 100644
index 0000000000..a086c59762
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-inline-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-width disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-left-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-left-color-001.html
new file mode 100644
index 0000000000..647d0c1daa
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-left-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-color disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-left-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-left-style-001.html
new file mode 100644
index 0000000000..8cd58bc942
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-left-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-style disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-left-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-left-width-001.html
new file mode 100644
index 0000000000..a70ed497c8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-left-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-width disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-right-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-right-color-001.html
new file mode 100644
index 0000000000..9b286548ef
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-right-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-color disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-right-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-right-style-001.html
new file mode 100644
index 0000000000..69bc1fae3b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-right-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-style disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-right-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-right-width-001.html
new file mode 100644
index 0000000000..6a918db51d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-right-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-width disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-start-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-start-end-radius-001.html
new file mode 100644
index 0000000000..84cc06a594
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-start-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-end-radius disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-start-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-start-start-radius-001.html
new file mode 100644
index 0000000000..1481a5fcc3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-start-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-start-radius disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-top-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-top-color-001.html
new file mode 100644
index 0000000000..d5f2c67817
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-top-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-color disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-top-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-top-left-radius-001.html
new file mode 100644
index 0000000000..6de4bb323f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-top-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-left-radius disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-top-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-top-right-radius-001.html
new file mode 100644
index 0000000000..6a3055cc09
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-top-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-right-radius disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-top-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-top-style-001.html
new file mode 100644
index 0000000000..80099b9cef
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-top-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-style disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-top-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-top-width-001.html
new file mode 100644
index 0000000000..152a473d57
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-search-text-border-top-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-width disables native appearance for input-search-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-search-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="search-text-input" type="search" value="input-search-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-background-attachment-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-background-attachment-001.html
new file mode 100644
index 0000000000..b36f8cf5ef
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-background-attachment-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-attachment disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-attachment.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-attachment";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-background-clip-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-background-clip-001.html
new file mode 100644
index 0000000000..88f96485a4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-background-clip-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-clip disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-clip.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-clip";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-background-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-background-color-001.html
new file mode 100644
index 0000000000..c5ebc0feae
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-background-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-color disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-background-image-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-background-image-001.html
new file mode 100644
index 0000000000..2bee179324
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-background-image-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-image disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-image.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-image";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-background-origin-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-background-origin-001.html
new file mode 100644
index 0000000000..f000839d1b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-background-origin-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-origin disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-origin.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-origin";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-background-position-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-background-position-001.html
new file mode 100644
index 0000000000..1aea7465d5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-background-position-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-position disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-position.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-position";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-background-size-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-background-size-001.html
new file mode 100644
index 0000000000..0a92b03012
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-background-size-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-size disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-size.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-size";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-block-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-block-end-color-001.html
new file mode 100644
index 0000000000..10c583ff72
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-block-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-color disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-block-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-block-end-style-001.html
new file mode 100644
index 0000000000..009e62337e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-block-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-style disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-block-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-block-end-width-001.html
new file mode 100644
index 0000000000..5d4c3e04c2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-block-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-width disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-block-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-block-start-color-001.html
new file mode 100644
index 0000000000..7b85ed264f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-block-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-color disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-block-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-block-start-style-001.html
new file mode 100644
index 0000000000..db23cc0010
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-block-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-style disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-block-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-block-start-width-001.html
new file mode 100644
index 0000000000..ea8943575a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-block-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-width disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-bottom-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-bottom-color-001.html
new file mode 100644
index 0000000000..a0c6aeabd1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-bottom-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-color disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-bottom-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-bottom-left-radius-001.html
new file mode 100644
index 0000000000..27368813f9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-bottom-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-left-radius disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-bottom-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-bottom-right-radius-001.html
new file mode 100644
index 0000000000..d876112e06
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-bottom-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-right-radius disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-bottom-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-bottom-style-001.html
new file mode 100644
index 0000000000..c08eacfb62
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-bottom-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-style disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-bottom-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-bottom-width-001.html
new file mode 100644
index 0000000000..0f98fb5e43
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-bottom-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-width disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-end-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-end-end-radius-001.html
new file mode 100644
index 0000000000..b7212ef44c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-end-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-end-radius disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-end-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-end-start-radius-001.html
new file mode 100644
index 0000000000..ca29a81260
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-end-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-start-radius disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-image-outset-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-image-outset-001.html
new file mode 100644
index 0000000000..8505655ea4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-image-outset-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-outset disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-outset.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-outset";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-image-repeat-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-image-repeat-001.html
new file mode 100644
index 0000000000..42084e7d8b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-image-repeat-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-repeat disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-repeat.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-repeat";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-image-slice-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-image-slice-001.html
new file mode 100644
index 0000000000..03721a19fd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-image-slice-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-slice disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-slice.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-slice";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-image-source-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-image-source-001.html
new file mode 100644
index 0000000000..b768500ae8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-image-source-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-source disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-source.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-source";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-image-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-image-width-001.html
new file mode 100644
index 0000000000..cd28c59c28
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-image-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-width disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-inline-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-inline-end-color-001.html
new file mode 100644
index 0000000000..7b1109ed25
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-inline-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-color disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-inline-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-inline-end-style-001.html
new file mode 100644
index 0000000000..47c7d1f49f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-inline-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-style disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-inline-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-inline-end-width-001.html
new file mode 100644
index 0000000000..2fde013d5b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-inline-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-width disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-inline-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-inline-start-color-001.html
new file mode 100644
index 0000000000..debb779240
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-inline-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-color disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-inline-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-inline-start-style-001.html
new file mode 100644
index 0000000000..4e260effb7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-inline-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-style disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-inline-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-inline-start-width-001.html
new file mode 100644
index 0000000000..9caca2822f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-inline-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-width disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-left-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-left-color-001.html
new file mode 100644
index 0000000000..7c5118375b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-left-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-color disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-left-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-left-style-001.html
new file mode 100644
index 0000000000..8981d27e61
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-left-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-style disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-left-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-left-width-001.html
new file mode 100644
index 0000000000..5b93b5bc3d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-left-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-width disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-right-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-right-color-001.html
new file mode 100644
index 0000000000..243341d212
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-right-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-color disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-right-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-right-style-001.html
new file mode 100644
index 0000000000..be67b5327d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-right-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-style disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-right-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-right-width-001.html
new file mode 100644
index 0000000000..bffb7dc6ac
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-right-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-width disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-start-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-start-end-radius-001.html
new file mode 100644
index 0000000000..ab96454e0b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-start-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-end-radius disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-start-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-start-start-radius-001.html
new file mode 100644
index 0000000000..0af363c894
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-start-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-start-radius disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-top-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-top-color-001.html
new file mode 100644
index 0000000000..9b62a7c5fc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-top-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-color disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-top-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-top-left-radius-001.html
new file mode 100644
index 0000000000..b6a1cd3476
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-top-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-left-radius disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-top-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-top-right-radius-001.html
new file mode 100644
index 0000000000..48c4a8cbc7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-top-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-right-radius disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-top-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-top-style-001.html
new file mode 100644
index 0000000000..de7b61f4a0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-top-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-style disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-top-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-top-width-001.html
new file mode 100644
index 0000000000..df2deefd7f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-submit-border-top-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-width disables native appearance for input-submit</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-submit-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="submit-input" type="submit" value="input-submit">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-background-attachment-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-background-attachment-001.html
new file mode 100644
index 0000000000..9aa9950487
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-background-attachment-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-attachment disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-attachment.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-attachment";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-background-clip-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-background-clip-001.html
new file mode 100644
index 0000000000..e90ad46d57
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-background-clip-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-clip disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-clip.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-clip";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-background-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-background-color-001.html
new file mode 100644
index 0000000000..10e5bfcc11
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-background-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-color disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-background-image-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-background-image-001.html
new file mode 100644
index 0000000000..ab612a3713
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-background-image-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-image disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-image.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-image";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-background-origin-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-background-origin-001.html
new file mode 100644
index 0000000000..8b447fc78b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-background-origin-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-origin disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-origin.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-origin";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-background-position-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-background-position-001.html
new file mode 100644
index 0000000000..e75ae6369c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-background-position-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-position disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-position.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-position";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-background-size-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-background-size-001.html
new file mode 100644
index 0000000000..6e182151ef
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-background-size-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-size disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-size.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-size";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-block-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-block-end-color-001.html
new file mode 100644
index 0000000000..00536269b1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-block-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-color disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-block-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-block-end-style-001.html
new file mode 100644
index 0000000000..460aab47c6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-block-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-style disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-block-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-block-end-width-001.html
new file mode 100644
index 0000000000..bfe0590c9e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-block-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-width disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-block-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-block-start-color-001.html
new file mode 100644
index 0000000000..a99decb693
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-block-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-color disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-block-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-block-start-style-001.html
new file mode 100644
index 0000000000..fc3ac1a2fc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-block-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-style disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-block-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-block-start-width-001.html
new file mode 100644
index 0000000000..9fa513af7a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-block-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-width disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-bottom-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-bottom-color-001.html
new file mode 100644
index 0000000000..2eb97b2d9c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-bottom-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-color disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-bottom-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-bottom-left-radius-001.html
new file mode 100644
index 0000000000..34ffa2d2b3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-bottom-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-left-radius disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-bottom-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-bottom-right-radius-001.html
new file mode 100644
index 0000000000..e889656af8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-bottom-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-right-radius disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-bottom-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-bottom-style-001.html
new file mode 100644
index 0000000000..1afdb4b486
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-bottom-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-style disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-bottom-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-bottom-width-001.html
new file mode 100644
index 0000000000..6540d05fa6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-bottom-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-width disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-end-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-end-end-radius-001.html
new file mode 100644
index 0000000000..98735e9c01
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-end-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-end-radius disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-end-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-end-start-radius-001.html
new file mode 100644
index 0000000000..6dd419e22d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-end-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-start-radius disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-image-outset-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-image-outset-001.html
new file mode 100644
index 0000000000..fc46ace6cd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-image-outset-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-outset disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-outset.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-outset";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-image-repeat-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-image-repeat-001.html
new file mode 100644
index 0000000000..709485ffc3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-image-repeat-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-repeat disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-repeat.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-repeat";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-image-slice-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-image-slice-001.html
new file mode 100644
index 0000000000..1b391cceec
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-image-slice-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-slice disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-slice.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-slice";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-image-source-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-image-source-001.html
new file mode 100644
index 0000000000..2523a8261c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-image-source-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-source disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-source.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-source";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-image-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-image-width-001.html
new file mode 100644
index 0000000000..3f22013eee
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-image-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-width disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-inline-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-inline-end-color-001.html
new file mode 100644
index 0000000000..294cc707d0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-inline-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-color disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-inline-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-inline-end-style-001.html
new file mode 100644
index 0000000000..97a9a5dcfc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-inline-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-style disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-inline-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-inline-end-width-001.html
new file mode 100644
index 0000000000..e0035f2d79
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-inline-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-width disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-inline-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-inline-start-color-001.html
new file mode 100644
index 0000000000..f4b3974ab4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-inline-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-color disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-inline-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-inline-start-style-001.html
new file mode 100644
index 0000000000..e2b1ca7c7a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-inline-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-style disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-inline-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-inline-start-width-001.html
new file mode 100644
index 0000000000..dc07a0ed82
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-inline-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-width disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-left-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-left-color-001.html
new file mode 100644
index 0000000000..65fd37f7e0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-left-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-color disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-left-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-left-style-001.html
new file mode 100644
index 0000000000..0c5fd539b6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-left-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-style disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-left-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-left-width-001.html
new file mode 100644
index 0000000000..5e8e54ef9e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-left-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-width disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-right-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-right-color-001.html
new file mode 100644
index 0000000000..91385eb589
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-right-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-color disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-right-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-right-style-001.html
new file mode 100644
index 0000000000..8fe090fc33
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-right-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-style disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-right-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-right-width-001.html
new file mode 100644
index 0000000000..cb3470e000
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-right-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-width disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-start-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-start-end-radius-001.html
new file mode 100644
index 0000000000..d8ca285dfc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-start-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-end-radius disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-start-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-start-start-radius-001.html
new file mode 100644
index 0000000000..b3c94b3388
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-start-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-start-radius disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-top-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-top-color-001.html
new file mode 100644
index 0000000000..e57dba8c03
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-top-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-color disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-color.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-top-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-top-left-radius-001.html
new file mode 100644
index 0000000000..d408d75db3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-top-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-left-radius disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-top-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-top-right-radius-001.html
new file mode 100644
index 0000000000..a39e8fff1f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-top-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-right-radius disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-top-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-top-style-001.html
new file mode 100644
index 0000000000..cd4fcc4b10
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-top-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-style disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-style.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-top-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-top-width-001.html
new file mode 100644
index 0000000000..21185f9890
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-input-text-border-top-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-width disables native appearance for input-text</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-width.">
+<link rel="match" href="../compute-kind-widget-fallback-input-text-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="text-input" type="text" value="input-text">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-background-attachment-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-background-attachment-001.html
new file mode 100644
index 0000000000..b68f8ee1cc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-background-attachment-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-attachment disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-attachment.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-attachment";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-background-clip-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-background-clip-001.html
new file mode 100644
index 0000000000..417f715414
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-background-clip-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-clip disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-clip.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-clip";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-background-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-background-color-001.html
new file mode 100644
index 0000000000..52e07c3f03
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-background-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-color disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-color.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-background-image-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-background-image-001.html
new file mode 100644
index 0000000000..27c6a2668f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-background-image-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-image disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-image.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-image";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-background-origin-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-background-origin-001.html
new file mode 100644
index 0000000000..06963ba20d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-background-origin-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-origin disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-origin.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-origin";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-background-position-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-background-position-001.html
new file mode 100644
index 0000000000..e6e1c180be
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-background-position-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-position disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-position.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-position";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-background-size-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-background-size-001.html
new file mode 100644
index 0000000000..0fec1738a7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-background-size-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-size disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-size.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-size";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-block-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-block-end-color-001.html
new file mode 100644
index 0000000000..a35424ba40
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-block-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-color disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-block-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-block-end-style-001.html
new file mode 100644
index 0000000000..471287ca74
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-block-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-style disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-block-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-block-end-width-001.html
new file mode 100644
index 0000000000..7010081f1b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-block-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-width disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-block-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-block-start-color-001.html
new file mode 100644
index 0000000000..c8861b4a76
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-block-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-color disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-block-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-block-start-style-001.html
new file mode 100644
index 0000000000..510214f2ee
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-block-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-style disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-block-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-block-start-width-001.html
new file mode 100644
index 0000000000..c9ebdbebcc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-block-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-width disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-bottom-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-bottom-color-001.html
new file mode 100644
index 0000000000..8db0902fff
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-bottom-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-color disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-color.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-bottom-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-bottom-left-radius-001.html
new file mode 100644
index 0000000000..8bee975ead
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-bottom-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-left-radius disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-bottom-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-bottom-right-radius-001.html
new file mode 100644
index 0000000000..00ac753675
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-bottom-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-right-radius disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-bottom-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-bottom-style-001.html
new file mode 100644
index 0000000000..ac19679451
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-bottom-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-style disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-style.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-bottom-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-bottom-width-001.html
new file mode 100644
index 0000000000..c18b4dcf0a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-bottom-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-width disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-width.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-end-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-end-end-radius-001.html
new file mode 100644
index 0000000000..bb8fa354bb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-end-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-end-radius disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-end-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-end-start-radius-001.html
new file mode 100644
index 0000000000..1263823068
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-end-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-start-radius disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-image-outset-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-image-outset-001.html
new file mode 100644
index 0000000000..ab9b973ffa
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-image-outset-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-outset disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-outset.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-outset";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-image-repeat-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-image-repeat-001.html
new file mode 100644
index 0000000000..32eb2a38ff
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-image-repeat-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-repeat disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-repeat.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-repeat";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-image-slice-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-image-slice-001.html
new file mode 100644
index 0000000000..1a6486e9d1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-image-slice-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-slice disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-slice.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-slice";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-image-source-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-image-source-001.html
new file mode 100644
index 0000000000..2ae8d4d475
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-image-source-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-source disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-source.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-source";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-image-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-image-width-001.html
new file mode 100644
index 0000000000..f22d5bfa5f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-image-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-width disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-width.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-inline-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-inline-end-color-001.html
new file mode 100644
index 0000000000..86c142554b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-inline-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-color disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-inline-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-inline-end-style-001.html
new file mode 100644
index 0000000000..dd0df7f55b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-inline-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-style disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-inline-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-inline-end-width-001.html
new file mode 100644
index 0000000000..31ef531d5a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-inline-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-width disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-inline-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-inline-start-color-001.html
new file mode 100644
index 0000000000..b721fb5211
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-inline-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-color disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-inline-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-inline-start-style-001.html
new file mode 100644
index 0000000000..a521fa1a91
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-inline-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-style disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-inline-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-inline-start-width-001.html
new file mode 100644
index 0000000000..d8ad23661e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-inline-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-width disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-left-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-left-color-001.html
new file mode 100644
index 0000000000..c2ec8d3269
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-left-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-color disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-color.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-left-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-left-style-001.html
new file mode 100644
index 0000000000..33c793aed5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-left-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-style disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-style.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-left-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-left-width-001.html
new file mode 100644
index 0000000000..f8d2311a08
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-left-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-width disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-width.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-right-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-right-color-001.html
new file mode 100644
index 0000000000..6affa83d96
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-right-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-color disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-color.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-right-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-right-style-001.html
new file mode 100644
index 0000000000..4d508dbb30
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-right-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-style disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-style.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-right-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-right-width-001.html
new file mode 100644
index 0000000000..c32ba83dbf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-right-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-width disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-width.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-start-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-start-end-radius-001.html
new file mode 100644
index 0000000000..62be943c75
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-start-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-end-radius disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-start-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-start-start-radius-001.html
new file mode 100644
index 0000000000..84362f3e8d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-start-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-start-radius disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-top-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-top-color-001.html
new file mode 100644
index 0000000000..f41ae3c623
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-top-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-color disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-color.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-top-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-top-left-radius-001.html
new file mode 100644
index 0000000000..ec8ed2996c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-top-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-left-radius disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-top-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-top-right-radius-001.html
new file mode 100644
index 0000000000..9c29f074f8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-top-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-right-radius disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-top-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-top-style-001.html
new file mode 100644
index 0000000000..34c6b54a1d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-top-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-style disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-style.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-top-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-top-width-001.html
new file mode 100644
index 0000000000..73b8261ae6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-link-border-top-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-width disables native appearance for link</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-width.">
+<link rel="match" href="../compute-kind-widget-fallback-link-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a id="link">a</a>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-background-attachment-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-background-attachment-001.html
new file mode 100644
index 0000000000..f9760122e9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-background-attachment-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-attachment disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-attachment.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-attachment";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-background-clip-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-background-clip-001.html
new file mode 100644
index 0000000000..dd353eb00a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-background-clip-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-clip disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-clip.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-clip";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-background-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-background-color-001.html
new file mode 100644
index 0000000000..2d6f903a06
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-background-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-color disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-color.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-background-image-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-background-image-001.html
new file mode 100644
index 0000000000..2217eba409
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-background-image-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-image disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-image.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-image";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-background-origin-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-background-origin-001.html
new file mode 100644
index 0000000000..8c2321227d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-background-origin-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-origin disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-origin.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-origin";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-background-position-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-background-position-001.html
new file mode 100644
index 0000000000..b82a498119
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-background-position-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-position disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-position.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-position";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-background-size-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-background-size-001.html
new file mode 100644
index 0000000000..2e3fa56313
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-background-size-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-size disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-size.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-size";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-block-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-block-end-color-001.html
new file mode 100644
index 0000000000..2b0742dec1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-block-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-color disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-block-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-block-end-style-001.html
new file mode 100644
index 0000000000..cf733efffa
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-block-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-style disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-block-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-block-end-width-001.html
new file mode 100644
index 0000000000..44bcd7d590
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-block-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-width disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-block-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-block-start-color-001.html
new file mode 100644
index 0000000000..c03b5eb012
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-block-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-color disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-block-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-block-start-style-001.html
new file mode 100644
index 0000000000..5ed90d3684
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-block-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-style disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-block-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-block-start-width-001.html
new file mode 100644
index 0000000000..0dae7defc1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-block-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-width disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-bottom-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-bottom-color-001.html
new file mode 100644
index 0000000000..bc3d1bb8e7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-bottom-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-color disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-color.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-bottom-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-bottom-left-radius-001.html
new file mode 100644
index 0000000000..aad197d192
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-bottom-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-left-radius disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-bottom-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-bottom-right-radius-001.html
new file mode 100644
index 0000000000..2ea501c5ce
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-bottom-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-right-radius disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-bottom-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-bottom-style-001.html
new file mode 100644
index 0000000000..887fe56ec6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-bottom-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-style disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-style.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-bottom-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-bottom-width-001.html
new file mode 100644
index 0000000000..5af8fffb41
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-bottom-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-width disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-width.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-end-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-end-end-radius-001.html
new file mode 100644
index 0000000000..bacfb1d979
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-end-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-end-radius disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-end-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-end-start-radius-001.html
new file mode 100644
index 0000000000..0a4d9bcd32
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-end-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-start-radius disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-image-outset-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-image-outset-001.html
new file mode 100644
index 0000000000..f89f6c8c10
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-image-outset-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-outset disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-outset.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-outset";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-image-repeat-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-image-repeat-001.html
new file mode 100644
index 0000000000..c87a7194a7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-image-repeat-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-repeat disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-repeat.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-repeat";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-image-slice-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-image-slice-001.html
new file mode 100644
index 0000000000..ebb7d24679
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-image-slice-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-slice disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-slice.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-slice";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-image-source-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-image-source-001.html
new file mode 100644
index 0000000000..a823e2281c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-image-source-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-source disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-source.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-source";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-image-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-image-width-001.html
new file mode 100644
index 0000000000..c0d4f43d6a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-image-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-width disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-width.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-inline-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-inline-end-color-001.html
new file mode 100644
index 0000000000..624c594d41
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-inline-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-color disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-inline-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-inline-end-style-001.html
new file mode 100644
index 0000000000..233c4f2811
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-inline-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-style disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-inline-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-inline-end-width-001.html
new file mode 100644
index 0000000000..4d25da679a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-inline-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-width disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-inline-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-inline-start-color-001.html
new file mode 100644
index 0000000000..49d0c1d9f7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-inline-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-color disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-inline-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-inline-start-style-001.html
new file mode 100644
index 0000000000..0a48844dee
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-inline-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-style disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-inline-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-inline-start-width-001.html
new file mode 100644
index 0000000000..ae7382c574
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-inline-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-width disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-left-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-left-color-001.html
new file mode 100644
index 0000000000..f5cde670ff
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-left-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-color disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-color.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-left-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-left-style-001.html
new file mode 100644
index 0000000000..48c1740146
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-left-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-style disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-style.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-left-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-left-width-001.html
new file mode 100644
index 0000000000..0aca1fbaa7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-left-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-width disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-width.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-right-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-right-color-001.html
new file mode 100644
index 0000000000..b7b2360792
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-right-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-color disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-color.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-right-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-right-style-001.html
new file mode 100644
index 0000000000..24d4b2eeca
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-right-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-style disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-style.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-right-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-right-width-001.html
new file mode 100644
index 0000000000..a3659d5662
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-right-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-width disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-width.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-start-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-start-end-radius-001.html
new file mode 100644
index 0000000000..ac4ec661e0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-start-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-end-radius disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-start-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-start-start-radius-001.html
new file mode 100644
index 0000000000..62d5d57d2b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-start-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-start-radius disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-top-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-top-color-001.html
new file mode 100644
index 0000000000..28210d6f67
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-top-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-color disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-color.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-top-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-top-left-radius-001.html
new file mode 100644
index 0000000000..cf25cc4894
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-top-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-left-radius disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-top-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-top-right-radius-001.html
new file mode 100644
index 0000000000..24f15a54b8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-top-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-right-radius disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-top-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-top-style-001.html
new file mode 100644
index 0000000000..37ba183f77
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-top-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-style disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-style.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-top-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-top-width-001.html
new file mode 100644
index 0000000000..c10fce34f4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-meter-border-top-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-width disables native appearance for meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-width.">
+<link rel="match" href="../compute-kind-widget-fallback-meter-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <meter id="meter" value=0.5></meter>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-background-attachment-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-background-attachment-001.html
new file mode 100644
index 0000000000..b85186c680
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-background-attachment-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-attachment disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-attachment.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-attachment";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-background-clip-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-background-clip-001.html
new file mode 100644
index 0000000000..e3df1f06a2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-background-clip-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-clip disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-clip.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-clip";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-background-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-background-color-001.html
new file mode 100644
index 0000000000..8e935212c7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-background-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-color disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-color.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-background-image-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-background-image-001.html
new file mode 100644
index 0000000000..87e895e043
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-background-image-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-image disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-image.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-image";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-background-origin-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-background-origin-001.html
new file mode 100644
index 0000000000..a4958abd24
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-background-origin-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-origin disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-origin.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-origin";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-background-position-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-background-position-001.html
new file mode 100644
index 0000000000..ed117a9d97
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-background-position-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-position disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-position.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-position";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-background-size-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-background-size-001.html
new file mode 100644
index 0000000000..3047ef8414
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-background-size-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-size disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-size.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-size";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-block-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-block-end-color-001.html
new file mode 100644
index 0000000000..3f0846230f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-block-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-color disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-block-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-block-end-style-001.html
new file mode 100644
index 0000000000..1cddf916cc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-block-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-style disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-block-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-block-end-width-001.html
new file mode 100644
index 0000000000..fe21ae809f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-block-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-width disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-block-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-block-start-color-001.html
new file mode 100644
index 0000000000..67b5b8330e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-block-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-color disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-block-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-block-start-style-001.html
new file mode 100644
index 0000000000..5359a78b25
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-block-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-style disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-block-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-block-start-width-001.html
new file mode 100644
index 0000000000..1019a98b3e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-block-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-width disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-bottom-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-bottom-color-001.html
new file mode 100644
index 0000000000..366236c704
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-bottom-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-color disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-color.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-bottom-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-bottom-left-radius-001.html
new file mode 100644
index 0000000000..6dce72a618
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-bottom-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-left-radius disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-bottom-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-bottom-right-radius-001.html
new file mode 100644
index 0000000000..86eb1e7e76
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-bottom-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-right-radius disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-bottom-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-bottom-style-001.html
new file mode 100644
index 0000000000..900c7961ba
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-bottom-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-style disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-style.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-bottom-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-bottom-width-001.html
new file mode 100644
index 0000000000..67e97920d2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-bottom-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-width disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-width.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-end-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-end-end-radius-001.html
new file mode 100644
index 0000000000..0f78fb7c16
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-end-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-end-radius disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-end-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-end-start-radius-001.html
new file mode 100644
index 0000000000..9f74da94cb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-end-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-start-radius disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-image-outset-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-image-outset-001.html
new file mode 100644
index 0000000000..306c1611a0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-image-outset-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-outset disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-outset.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-outset";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-image-repeat-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-image-repeat-001.html
new file mode 100644
index 0000000000..2ba0e04b0d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-image-repeat-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-repeat disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-repeat.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-repeat";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-image-slice-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-image-slice-001.html
new file mode 100644
index 0000000000..42d6560f9c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-image-slice-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-slice disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-slice.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-slice";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-image-source-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-image-source-001.html
new file mode 100644
index 0000000000..80e6fdcc2b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-image-source-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-source disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-source.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-source";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-image-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-image-width-001.html
new file mode 100644
index 0000000000..5086cbae92
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-image-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-width disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-width.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-inline-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-inline-end-color-001.html
new file mode 100644
index 0000000000..88427b7892
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-inline-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-color disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-inline-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-inline-end-style-001.html
new file mode 100644
index 0000000000..e16bb5a948
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-inline-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-style disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-inline-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-inline-end-width-001.html
new file mode 100644
index 0000000000..88f5615387
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-inline-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-width disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-inline-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-inline-start-color-001.html
new file mode 100644
index 0000000000..a94c23d717
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-inline-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-color disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-inline-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-inline-start-style-001.html
new file mode 100644
index 0000000000..479a0faa2d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-inline-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-style disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-inline-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-inline-start-width-001.html
new file mode 100644
index 0000000000..480fbc7207
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-inline-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-width disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-left-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-left-color-001.html
new file mode 100644
index 0000000000..0f6a3c6fcb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-left-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-color disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-color.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-left-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-left-style-001.html
new file mode 100644
index 0000000000..aab0719b9b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-left-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-style disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-style.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-left-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-left-width-001.html
new file mode 100644
index 0000000000..6c24d4e733
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-left-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-width disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-width.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-right-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-right-color-001.html
new file mode 100644
index 0000000000..2f0aa1351c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-right-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-color disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-color.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-right-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-right-style-001.html
new file mode 100644
index 0000000000..02dfe722a0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-right-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-style disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-style.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-right-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-right-width-001.html
new file mode 100644
index 0000000000..4f438b5320
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-right-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-width disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-width.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-start-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-start-end-radius-001.html
new file mode 100644
index 0000000000..bdab3fd0ec
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-start-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-end-radius disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-start-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-start-start-radius-001.html
new file mode 100644
index 0000000000..5c5f06890f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-start-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-start-radius disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-top-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-top-color-001.html
new file mode 100644
index 0000000000..62c0d5f2b9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-top-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-color disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-color.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-top-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-top-left-radius-001.html
new file mode 100644
index 0000000000..7c6b62f826
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-top-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-left-radius disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-top-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-top-right-radius-001.html
new file mode 100644
index 0000000000..f412a90350
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-top-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-right-radius disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-top-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-top-style-001.html
new file mode 100644
index 0000000000..c8601df503
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-top-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-style disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-style.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-top-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-top-width-001.html
new file mode 100644
index 0000000000..ea5c5c49fa
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-progress-border-top-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-width disables native appearance for progress</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-width.">
+<link rel="match" href="../compute-kind-widget-fallback-progress-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-background-attachment-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-background-attachment-001.html
new file mode 100644
index 0000000000..8c7e8ea16e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-background-attachment-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-attachment disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-attachment.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-attachment";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-background-clip-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-background-clip-001.html
new file mode 100644
index 0000000000..cbb6a7ec10
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-background-clip-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-clip disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-clip.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-clip";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-background-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-background-color-001.html
new file mode 100644
index 0000000000..ce5b79bbe2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-background-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-color disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-color.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-background-image-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-background-image-001.html
new file mode 100644
index 0000000000..e15e9e4c15
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-background-image-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-image disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-image.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-image";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-background-origin-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-background-origin-001.html
new file mode 100644
index 0000000000..0e81e6fe38
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-background-origin-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-origin disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-origin.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-origin";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-background-position-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-background-position-001.html
new file mode 100644
index 0000000000..4fa8e7af26
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-background-position-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-position disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-position.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-position";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-background-size-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-background-size-001.html
new file mode 100644
index 0000000000..1a989ed6df
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-background-size-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-size disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-size.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-size";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-block-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-block-end-color-001.html
new file mode 100644
index 0000000000..d7708ce4cc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-block-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-color disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-block-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-block-end-style-001.html
new file mode 100644
index 0000000000..4707f09aa9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-block-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-style disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-block-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-block-end-width-001.html
new file mode 100644
index 0000000000..a0098cc0ec
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-block-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-width disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-block-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-block-start-color-001.html
new file mode 100644
index 0000000000..0375cd802f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-block-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-color disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-block-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-block-start-style-001.html
new file mode 100644
index 0000000000..ec17b48c6b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-block-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-style disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-block-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-block-start-width-001.html
new file mode 100644
index 0000000000..2e3d9443cd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-block-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-width disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-bottom-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-bottom-color-001.html
new file mode 100644
index 0000000000..1cbebba1d7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-bottom-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-color disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-color.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-bottom-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-bottom-left-radius-001.html
new file mode 100644
index 0000000000..f9c253da89
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-bottom-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-left-radius disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-bottom-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-bottom-right-radius-001.html
new file mode 100644
index 0000000000..5f1458598c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-bottom-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-right-radius disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-bottom-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-bottom-style-001.html
new file mode 100644
index 0000000000..96c8932201
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-bottom-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-style disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-style.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-bottom-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-bottom-width-001.html
new file mode 100644
index 0000000000..be80a5af60
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-bottom-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-width disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-width.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-end-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-end-end-radius-001.html
new file mode 100644
index 0000000000..f03b3ffdc2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-end-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-end-radius disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-end-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-end-start-radius-001.html
new file mode 100644
index 0000000000..954a4ff433
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-end-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-start-radius disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-image-outset-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-image-outset-001.html
new file mode 100644
index 0000000000..8965306856
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-image-outset-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-outset disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-outset.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-outset";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-image-repeat-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-image-repeat-001.html
new file mode 100644
index 0000000000..662f9ca648
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-image-repeat-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-repeat disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-repeat.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-repeat";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-image-slice-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-image-slice-001.html
new file mode 100644
index 0000000000..f15ebe31a7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-image-slice-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-slice disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-slice.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-slice";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-image-source-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-image-source-001.html
new file mode 100644
index 0000000000..539ebb7b5d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-image-source-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-source disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-source.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-source";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-image-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-image-width-001.html
new file mode 100644
index 0000000000..a17d8475dd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-image-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-width disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-width.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-inline-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-inline-end-color-001.html
new file mode 100644
index 0000000000..8772070068
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-inline-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-color disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-inline-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-inline-end-style-001.html
new file mode 100644
index 0000000000..271f4e37fd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-inline-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-style disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-inline-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-inline-end-width-001.html
new file mode 100644
index 0000000000..7f61c6fb59
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-inline-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-width disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-inline-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-inline-start-color-001.html
new file mode 100644
index 0000000000..6c25f25d17
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-inline-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-color disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-inline-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-inline-start-style-001.html
new file mode 100644
index 0000000000..5ced60d4ba
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-inline-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-style disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-inline-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-inline-start-width-001.html
new file mode 100644
index 0000000000..f39286a771
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-inline-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-width disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-left-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-left-color-001.html
new file mode 100644
index 0000000000..b19deb2c66
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-left-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-color disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-color.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-left-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-left-style-001.html
new file mode 100644
index 0000000000..56e7d9ef18
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-left-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-style disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-style.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-left-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-left-width-001.html
new file mode 100644
index 0000000000..2ee2531b68
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-left-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-width disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-width.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-right-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-right-color-001.html
new file mode 100644
index 0000000000..8fbb9f4115
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-right-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-color disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-color.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-right-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-right-style-001.html
new file mode 100644
index 0000000000..df88bff3fc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-right-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-style disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-style.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-right-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-right-width-001.html
new file mode 100644
index 0000000000..22ce6e076f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-right-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-width disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-width.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-start-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-start-end-radius-001.html
new file mode 100644
index 0000000000..360b827151
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-start-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-end-radius disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-start-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-start-start-radius-001.html
new file mode 100644
index 0000000000..6a6904d013
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-start-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-start-radius disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-top-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-top-color-001.html
new file mode 100644
index 0000000000..08086865d6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-top-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-color disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-color.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-top-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-top-left-radius-001.html
new file mode 100644
index 0000000000..426cae160e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-top-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-left-radius disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-top-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-top-right-radius-001.html
new file mode 100644
index 0000000000..b95427553e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-top-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-right-radius disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-top-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-top-style-001.html
new file mode 100644
index 0000000000..ead7b86ce6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-top-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-style disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-style.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-top-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-top-width-001.html
new file mode 100644
index 0000000000..c2a867421b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-radio-input-border-top-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-width disables native appearance for radio-input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-width.">
+<link rel="match" href="../compute-kind-widget-fallback-radio-input-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="radio-input" type="radio">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-background-attachment-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-background-attachment-001.html
new file mode 100644
index 0000000000..72c767a514
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-background-attachment-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-attachment disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-attachment.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-attachment";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-background-clip-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-background-clip-001.html
new file mode 100644
index 0000000000..790641dd9d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-background-clip-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-clip disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-clip.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-clip";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-background-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-background-color-001.html
new file mode 100644
index 0000000000..b3e18adffa
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-background-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-color disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-color.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-background-image-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-background-image-001.html
new file mode 100644
index 0000000000..4043b25fe9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-background-image-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-image disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-image.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-image";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-background-origin-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-background-origin-001.html
new file mode 100644
index 0000000000..a80b97b2a1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-background-origin-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-origin disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-origin.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-origin";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-background-position-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-background-position-001.html
new file mode 100644
index 0000000000..895faa0084
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-background-position-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-position disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-position.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-position";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-background-size-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-background-size-001.html
new file mode 100644
index 0000000000..a3513799ae
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-background-size-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-size disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-size.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-size";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-block-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-block-end-color-001.html
new file mode 100644
index 0000000000..557070fe80
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-block-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-color disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-block-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-block-end-style-001.html
new file mode 100644
index 0000000000..b0748f3f5b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-block-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-style disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-block-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-block-end-width-001.html
new file mode 100644
index 0000000000..f5b075ac17
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-block-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-width disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-block-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-block-start-color-001.html
new file mode 100644
index 0000000000..28a37eae6a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-block-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-color disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-block-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-block-start-style-001.html
new file mode 100644
index 0000000000..3ff761c721
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-block-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-style disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-block-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-block-start-width-001.html
new file mode 100644
index 0000000000..78458b6608
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-block-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-width disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-bottom-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-bottom-color-001.html
new file mode 100644
index 0000000000..fabdf0a492
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-bottom-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-color disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-color.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-bottom-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-bottom-left-radius-001.html
new file mode 100644
index 0000000000..4f4b4c6d91
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-bottom-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-left-radius disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-bottom-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-bottom-right-radius-001.html
new file mode 100644
index 0000000000..5a0bdd2902
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-bottom-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-right-radius disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-bottom-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-bottom-style-001.html
new file mode 100644
index 0000000000..2478e65d1f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-bottom-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-style disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-style.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-bottom-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-bottom-width-001.html
new file mode 100644
index 0000000000..924356441b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-bottom-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-width disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-width.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-end-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-end-end-radius-001.html
new file mode 100644
index 0000000000..96b8ee95c2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-end-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-end-radius disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-end-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-end-start-radius-001.html
new file mode 100644
index 0000000000..2c2e4ed67a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-end-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-start-radius disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-image-outset-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-image-outset-001.html
new file mode 100644
index 0000000000..9890eae400
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-image-outset-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-outset disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-outset.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-outset";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-image-repeat-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-image-repeat-001.html
new file mode 100644
index 0000000000..a3602ef173
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-image-repeat-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-repeat disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-repeat.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-repeat";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-image-slice-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-image-slice-001.html
new file mode 100644
index 0000000000..0c8ffa168b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-image-slice-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-slice disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-slice.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-slice";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-image-source-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-image-source-001.html
new file mode 100644
index 0000000000..60fcd035a1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-image-source-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-source disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-source.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-source";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-image-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-image-width-001.html
new file mode 100644
index 0000000000..59098eec89
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-image-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-width disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-width.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-inline-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-inline-end-color-001.html
new file mode 100644
index 0000000000..16e2c1bd47
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-inline-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-color disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-inline-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-inline-end-style-001.html
new file mode 100644
index 0000000000..7e664810f3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-inline-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-style disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-inline-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-inline-end-width-001.html
new file mode 100644
index 0000000000..eaff4997e6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-inline-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-width disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-inline-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-inline-start-color-001.html
new file mode 100644
index 0000000000..163694169a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-inline-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-color disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-inline-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-inline-start-style-001.html
new file mode 100644
index 0000000000..a5b216d1fa
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-inline-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-style disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-inline-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-inline-start-width-001.html
new file mode 100644
index 0000000000..0eb1f6ec6f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-inline-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-width disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-left-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-left-color-001.html
new file mode 100644
index 0000000000..02135eae2d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-left-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-color disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-color.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-left-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-left-style-001.html
new file mode 100644
index 0000000000..edef1998be
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-left-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-style disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-style.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-left-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-left-width-001.html
new file mode 100644
index 0000000000..e9d2804bcd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-left-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-width disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-width.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-right-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-right-color-001.html
new file mode 100644
index 0000000000..fb20afa6e6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-right-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-color disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-color.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-right-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-right-style-001.html
new file mode 100644
index 0000000000..6f4bfe4068
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-right-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-style disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-style.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-right-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-right-width-001.html
new file mode 100644
index 0000000000..03422cd5f3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-right-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-width disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-width.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-start-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-start-end-radius-001.html
new file mode 100644
index 0000000000..c5d4621893
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-start-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-end-radius disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-start-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-start-start-radius-001.html
new file mode 100644
index 0000000000..5c4a81f064
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-start-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-start-radius disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-top-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-top-color-001.html
new file mode 100644
index 0000000000..a8b12f51b0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-top-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-color disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-color.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-top-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-top-left-radius-001.html
new file mode 100644
index 0000000000..0eefc064b2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-top-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-left-radius disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-top-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-top-right-radius-001.html
new file mode 100644
index 0000000000..d43e98ee52
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-top-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-right-radius disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-top-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-top-style-001.html
new file mode 100644
index 0000000000..1e8dec3e85
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-top-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-style disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-style.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-top-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-top-width-001.html
new file mode 100644
index 0000000000..a45f6b1427
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-range-border-top-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-width disables native appearance for range</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-width.">
+<link rel="match" href="../compute-kind-widget-fallback-range-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <input id="range-input" type="range">
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-background-attachment-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-background-attachment-001.html
new file mode 100644
index 0000000000..9ba8944274
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-background-attachment-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-attachment disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-attachment.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-attachment";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-background-clip-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-background-clip-001.html
new file mode 100644
index 0000000000..719bec28ed
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-background-clip-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-clip disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-clip.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-clip";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-background-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-background-color-001.html
new file mode 100644
index 0000000000..9092c41bd9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-background-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-color disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-background-image-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-background-image-001.html
new file mode 100644
index 0000000000..972c343dc8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-background-image-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-image disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-image.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-image";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-background-origin-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-background-origin-001.html
new file mode 100644
index 0000000000..abc9acfc41
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-background-origin-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-origin disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-origin.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-origin";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-background-position-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-background-position-001.html
new file mode 100644
index 0000000000..999fff4211
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-background-position-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-position disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-position.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-position";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-background-size-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-background-size-001.html
new file mode 100644
index 0000000000..977bc0e835
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-background-size-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-size disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-size.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-size";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-block-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-block-end-color-001.html
new file mode 100644
index 0000000000..46bdb5b0e4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-block-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-color disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-block-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-block-end-style-001.html
new file mode 100644
index 0000000000..aa3788595a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-block-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-style disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-block-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-block-end-width-001.html
new file mode 100644
index 0000000000..cebe998f89
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-block-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-width disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-block-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-block-start-color-001.html
new file mode 100644
index 0000000000..9c238d5760
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-block-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-color disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-block-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-block-start-style-001.html
new file mode 100644
index 0000000000..7061a367ba
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-block-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-style disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-block-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-block-start-width-001.html
new file mode 100644
index 0000000000..34578a4782
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-block-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-width disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-bottom-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-bottom-color-001.html
new file mode 100644
index 0000000000..d1a7a01295
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-bottom-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-color disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-bottom-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-bottom-left-radius-001.html
new file mode 100644
index 0000000000..1c70cd361c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-bottom-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-left-radius disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-bottom-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-bottom-right-radius-001.html
new file mode 100644
index 0000000000..5185032c23
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-bottom-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-right-radius disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-bottom-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-bottom-style-001.html
new file mode 100644
index 0000000000..ceda431954
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-bottom-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-style disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-style.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-bottom-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-bottom-width-001.html
new file mode 100644
index 0000000000..3c43f47e59
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-bottom-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-width disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-end-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-end-end-radius-001.html
new file mode 100644
index 0000000000..182c527cc5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-end-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-end-radius disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-end-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-end-start-radius-001.html
new file mode 100644
index 0000000000..efbd14d7de
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-end-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-start-radius disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-image-outset-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-image-outset-001.html
new file mode 100644
index 0000000000..5a0eb9beab
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-image-outset-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-outset disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-outset.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-outset";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-image-repeat-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-image-repeat-001.html
new file mode 100644
index 0000000000..5ad2b2c0f8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-image-repeat-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-repeat disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-repeat.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-repeat";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-image-slice-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-image-slice-001.html
new file mode 100644
index 0000000000..3993331322
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-image-slice-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-slice disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-slice.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-slice";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-image-source-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-image-source-001.html
new file mode 100644
index 0000000000..9c9da2935a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-image-source-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-source disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-source.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-source";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-image-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-image-width-001.html
new file mode 100644
index 0000000000..d03492c583
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-image-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-width disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-inline-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-inline-end-color-001.html
new file mode 100644
index 0000000000..b8498148b6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-inline-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-color disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-inline-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-inline-end-style-001.html
new file mode 100644
index 0000000000..13a75cc5cd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-inline-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-style disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-inline-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-inline-end-width-001.html
new file mode 100644
index 0000000000..40d13678cc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-inline-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-width disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-inline-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-inline-start-color-001.html
new file mode 100644
index 0000000000..de4241fdf9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-inline-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-color disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-inline-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-inline-start-style-001.html
new file mode 100644
index 0000000000..9ea8f4dfe5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-inline-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-style disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-inline-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-inline-start-width-001.html
new file mode 100644
index 0000000000..dedfa6d40e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-inline-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-width disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-left-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-left-color-001.html
new file mode 100644
index 0000000000..5f88004404
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-left-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-color disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-left-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-left-style-001.html
new file mode 100644
index 0000000000..d574ac6850
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-left-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-style disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-style.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-left-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-left-width-001.html
new file mode 100644
index 0000000000..0c466b38ea
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-left-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-width disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-right-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-right-color-001.html
new file mode 100644
index 0000000000..ac2c9b29cf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-right-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-color disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-right-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-right-style-001.html
new file mode 100644
index 0000000000..671dd6fccc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-right-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-style disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-style.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-right-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-right-width-001.html
new file mode 100644
index 0000000000..2c7baec752
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-right-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-width disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-start-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-start-end-radius-001.html
new file mode 100644
index 0000000000..43c1b27a7e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-start-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-end-radius disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-start-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-start-start-radius-001.html
new file mode 100644
index 0000000000..f902a43179
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-start-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-start-radius disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-top-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-top-color-001.html
new file mode 100644
index 0000000000..b030e5cd21
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-top-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-color disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-top-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-top-left-radius-001.html
new file mode 100644
index 0000000000..35d83e296e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-top-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-left-radius disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-top-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-top-right-radius-001.html
new file mode 100644
index 0000000000..922a101bec
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-top-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-right-radius disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-top-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-top-style-001.html
new file mode 100644
index 0000000000..dfddc274eb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-top-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-style disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-style.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-top-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-top-width-001.html
new file mode 100644
index 0000000000..30019434db
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-dropdown-box-border-top-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-width disables native appearance for select-dropdown-box</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-dropdown-box-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-background-attachment-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-background-attachment-001.html
new file mode 100644
index 0000000000..b6f4087456
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-background-attachment-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-attachment disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-attachment.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-attachment";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-background-clip-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-background-clip-001.html
new file mode 100644
index 0000000000..43f87212d1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-background-clip-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-clip disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-clip.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-clip";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-background-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-background-color-001.html
new file mode 100644
index 0000000000..b349902c1b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-background-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-color disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-background-image-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-background-image-001.html
new file mode 100644
index 0000000000..bf8b706bf1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-background-image-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-image disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-image.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-image";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-background-origin-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-background-origin-001.html
new file mode 100644
index 0000000000..dfd1a934a8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-background-origin-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-origin disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-origin.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-origin";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-background-position-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-background-position-001.html
new file mode 100644
index 0000000000..41b6a7b81b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-background-position-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-position disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-position.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-position";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-background-size-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-background-size-001.html
new file mode 100644
index 0000000000..64fe9a0c89
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-background-size-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-size disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-size.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-size";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-block-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-block-end-color-001.html
new file mode 100644
index 0000000000..17a010be36
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-block-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-color disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-block-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-block-end-style-001.html
new file mode 100644
index 0000000000..f079e82abc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-block-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-style disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-block-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-block-end-width-001.html
new file mode 100644
index 0000000000..8f741e2136
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-block-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-width disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-block-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-block-start-color-001.html
new file mode 100644
index 0000000000..28ff9ee6ae
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-block-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-color disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-block-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-block-start-style-001.html
new file mode 100644
index 0000000000..dc7bcd0952
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-block-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-style disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-block-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-block-start-width-001.html
new file mode 100644
index 0000000000..0509dde5fb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-block-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-width disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-bottom-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-bottom-color-001.html
new file mode 100644
index 0000000000..af7704d0dd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-bottom-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-color disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-bottom-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-bottom-left-radius-001.html
new file mode 100644
index 0000000000..b38b443531
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-bottom-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-left-radius disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-bottom-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-bottom-right-radius-001.html
new file mode 100644
index 0000000000..f797e078f8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-bottom-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-right-radius disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-bottom-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-bottom-style-001.html
new file mode 100644
index 0000000000..6d895bce48
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-bottom-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-style disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-style.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-bottom-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-bottom-width-001.html
new file mode 100644
index 0000000000..14ea0153c5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-bottom-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-width disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-end-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-end-end-radius-001.html
new file mode 100644
index 0000000000..d105047747
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-end-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-end-radius disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-end-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-end-start-radius-001.html
new file mode 100644
index 0000000000..0ca58e5d04
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-end-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-start-radius disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-image-outset-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-image-outset-001.html
new file mode 100644
index 0000000000..367d1f64e1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-image-outset-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-outset disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-outset.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-outset";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-image-repeat-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-image-repeat-001.html
new file mode 100644
index 0000000000..558ab52000
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-image-repeat-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-repeat disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-repeat.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-repeat";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-image-slice-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-image-slice-001.html
new file mode 100644
index 0000000000..736ffd422d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-image-slice-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-slice disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-slice.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-slice";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-image-source-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-image-source-001.html
new file mode 100644
index 0000000000..987ed46626
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-image-source-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-source disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-source.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-source";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-image-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-image-width-001.html
new file mode 100644
index 0000000000..e6d824e21b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-image-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-width disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-inline-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-inline-end-color-001.html
new file mode 100644
index 0000000000..269805c299
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-inline-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-color disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-inline-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-inline-end-style-001.html
new file mode 100644
index 0000000000..74f6794710
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-inline-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-style disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-inline-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-inline-end-width-001.html
new file mode 100644
index 0000000000..bfb561c4b1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-inline-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-width disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-inline-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-inline-start-color-001.html
new file mode 100644
index 0000000000..7403def5f4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-inline-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-color disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-inline-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-inline-start-style-001.html
new file mode 100644
index 0000000000..235436bb4a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-inline-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-style disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-inline-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-inline-start-width-001.html
new file mode 100644
index 0000000000..24f6eb28a9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-inline-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-width disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-left-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-left-color-001.html
new file mode 100644
index 0000000000..107eeec6a2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-left-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-color disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-left-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-left-style-001.html
new file mode 100644
index 0000000000..a97d90c5cb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-left-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-style disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-style.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-left-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-left-width-001.html
new file mode 100644
index 0000000000..894276bb89
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-left-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-width disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-right-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-right-color-001.html
new file mode 100644
index 0000000000..6ebb3df197
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-right-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-color disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-right-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-right-style-001.html
new file mode 100644
index 0000000000..4cc83727db
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-right-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-style disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-style.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-right-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-right-width-001.html
new file mode 100644
index 0000000000..029c608827
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-right-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-width disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-start-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-start-end-radius-001.html
new file mode 100644
index 0000000000..464d7dfd1b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-start-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-end-radius disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-start-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-start-start-radius-001.html
new file mode 100644
index 0000000000..81c7892743
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-start-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-start-radius disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-top-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-top-color-001.html
new file mode 100644
index 0000000000..d7c68ac98d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-top-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-color disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-top-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-top-left-radius-001.html
new file mode 100644
index 0000000000..3b306bb7eb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-top-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-left-radius disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-top-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-top-right-radius-001.html
new file mode 100644
index 0000000000..ae8091382b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-top-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-right-radius disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-top-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-top-style-001.html
new file mode 100644
index 0000000000..8fbbb91e2e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-top-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-style disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-style.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-top-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-top-width-001.html
new file mode 100644
index 0000000000..b80972a50e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-listbox-border-top-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-width disables native appearance for select-listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-listbox-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-background-attachment-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-background-attachment-001.html
new file mode 100644
index 0000000000..4378b659c2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-background-attachment-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-attachment disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-attachment.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-attachment";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-background-clip-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-background-clip-001.html
new file mode 100644
index 0000000000..d62a086486
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-background-clip-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-clip disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-clip.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-clip";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-background-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-background-color-001.html
new file mode 100644
index 0000000000..bbf309938c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-background-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-color disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-background-image-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-background-image-001.html
new file mode 100644
index 0000000000..12c9fd5c4a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-background-image-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-image disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-image.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-image";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-background-origin-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-background-origin-001.html
new file mode 100644
index 0000000000..336fc8623c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-background-origin-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-origin disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-origin.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-origin";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-background-position-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-background-position-001.html
new file mode 100644
index 0000000000..7f4013654f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-background-position-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-position disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-position.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-position";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-background-size-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-background-size-001.html
new file mode 100644
index 0000000000..bb420ccf73
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-background-size-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-size disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-size.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-size";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-block-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-block-end-color-001.html
new file mode 100644
index 0000000000..1a476acc46
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-block-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-color disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-block-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-block-end-style-001.html
new file mode 100644
index 0000000000..db78458573
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-block-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-style disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-block-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-block-end-width-001.html
new file mode 100644
index 0000000000..f21984e12c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-block-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-width disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-block-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-block-start-color-001.html
new file mode 100644
index 0000000000..95308ab790
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-block-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-color disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-block-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-block-start-style-001.html
new file mode 100644
index 0000000000..1fa80c7eca
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-block-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-style disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-block-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-block-start-width-001.html
new file mode 100644
index 0000000000..57553cd306
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-block-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-width disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-bottom-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-bottom-color-001.html
new file mode 100644
index 0000000000..4666747e22
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-bottom-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-color disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-bottom-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-bottom-left-radius-001.html
new file mode 100644
index 0000000000..c58d57f709
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-bottom-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-left-radius disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-bottom-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-bottom-right-radius-001.html
new file mode 100644
index 0000000000..e302b17d54
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-bottom-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-right-radius disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-bottom-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-bottom-style-001.html
new file mode 100644
index 0000000000..c0154d1e83
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-bottom-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-style disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-style.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-bottom-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-bottom-width-001.html
new file mode 100644
index 0000000000..1dc70272c2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-bottom-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-width disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-end-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-end-end-radius-001.html
new file mode 100644
index 0000000000..ebedeacd9c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-end-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-end-radius disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-end-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-end-start-radius-001.html
new file mode 100644
index 0000000000..4a02399236
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-end-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-start-radius disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-image-outset-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-image-outset-001.html
new file mode 100644
index 0000000000..015737dca3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-image-outset-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-outset disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-outset.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-outset";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-image-repeat-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-image-repeat-001.html
new file mode 100644
index 0000000000..cb03b812f0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-image-repeat-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-repeat disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-repeat.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-repeat";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-image-slice-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-image-slice-001.html
new file mode 100644
index 0000000000..799010070b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-image-slice-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-slice disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-slice.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-slice";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-image-source-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-image-source-001.html
new file mode 100644
index 0000000000..1b3838ebb4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-image-source-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-source disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-source.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-source";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-image-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-image-width-001.html
new file mode 100644
index 0000000000..d78b9d9f38
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-image-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-width disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-inline-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-inline-end-color-001.html
new file mode 100644
index 0000000000..20c896d910
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-inline-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-color disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-inline-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-inline-end-style-001.html
new file mode 100644
index 0000000000..15048d4353
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-inline-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-style disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-inline-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-inline-end-width-001.html
new file mode 100644
index 0000000000..ad7b00ede8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-inline-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-width disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-inline-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-inline-start-color-001.html
new file mode 100644
index 0000000000..4641bb3e77
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-inline-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-color disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-inline-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-inline-start-style-001.html
new file mode 100644
index 0000000000..ab06492b23
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-inline-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-style disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-inline-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-inline-start-width-001.html
new file mode 100644
index 0000000000..0e3fcac797
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-inline-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-width disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-left-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-left-color-001.html
new file mode 100644
index 0000000000..9fa4d380cf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-left-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-color disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-left-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-left-style-001.html
new file mode 100644
index 0000000000..d1351ee725
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-left-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-style disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-style.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-left-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-left-width-001.html
new file mode 100644
index 0000000000..bfcb9e1784
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-left-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-width disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-right-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-right-color-001.html
new file mode 100644
index 0000000000..71d6758b80
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-right-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-color disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-right-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-right-style-001.html
new file mode 100644
index 0000000000..0927300e74
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-right-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-style disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-style.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-right-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-right-width-001.html
new file mode 100644
index 0000000000..01928ca8b8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-right-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-width disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-start-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-start-end-radius-001.html
new file mode 100644
index 0000000000..7fb7bcf7f9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-start-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-end-radius disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-start-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-start-start-radius-001.html
new file mode 100644
index 0000000000..35fef879cc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-start-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-start-radius disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-top-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-top-color-001.html
new file mode 100644
index 0000000000..cf1d4f8260
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-top-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-color disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-color.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-top-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-top-left-radius-001.html
new file mode 100644
index 0000000000..8b0eda3d78
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-top-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-left-radius disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-top-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-top-right-radius-001.html
new file mode 100644
index 0000000000..d2ec819ac6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-top-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-right-radius disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-top-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-top-style-001.html
new file mode 100644
index 0000000000..5625d4f132
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-top-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-style disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-style.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-top-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-top-width-001.html
new file mode 100644
index 0000000000..536a7ac8f2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-select-menulist-button-border-top-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-width disables native appearance for select-menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-width.">
+<link rel="match" href="../compute-kind-widget-fallback-select-menulist-button-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-background-attachment-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-background-attachment-001.html
new file mode 100644
index 0000000000..ab67317a20
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-background-attachment-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-attachment disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-attachment.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-attachment";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-background-clip-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-background-clip-001.html
new file mode 100644
index 0000000000..821cdda277
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-background-clip-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-clip disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-clip.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-clip";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-background-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-background-color-001.html
new file mode 100644
index 0000000000..999bf80ab4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-background-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-color disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-color.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-background-image-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-background-image-001.html
new file mode 100644
index 0000000000..30171213b4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-background-image-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-image disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-image.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-image";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-background-origin-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-background-origin-001.html
new file mode 100644
index 0000000000..9eaaeabc50
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-background-origin-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-origin disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-origin.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-origin";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-background-position-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-background-position-001.html
new file mode 100644
index 0000000000..42c4f0ad61
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-background-position-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-position disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-position.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-position";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-background-size-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-background-size-001.html
new file mode 100644
index 0000000000..00d57199ad
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-background-size-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: background-size disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes background-size.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "background-size";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-block-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-block-end-color-001.html
new file mode 100644
index 0000000000..c44d7d585e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-block-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-color disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-block-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-block-end-style-001.html
new file mode 100644
index 0000000000..61f2f20b7b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-block-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-style disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-block-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-block-end-width-001.html
new file mode 100644
index 0000000000..c18998c5d5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-block-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-end-width disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-block-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-block-start-color-001.html
new file mode 100644
index 0000000000..4952f5a7ec
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-block-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-color disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-block-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-block-start-style-001.html
new file mode 100644
index 0000000000..757ace5132
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-block-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-style disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-block-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-block-start-width-001.html
new file mode 100644
index 0000000000..c32109de55
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-block-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-block-start-width disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-block-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-block-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-bottom-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-bottom-color-001.html
new file mode 100644
index 0000000000..6bbcadcc80
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-bottom-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-color disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-color.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-bottom-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-bottom-left-radius-001.html
new file mode 100644
index 0000000000..8d1e7c4ba8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-bottom-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-left-radius disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-bottom-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-bottom-right-radius-001.html
new file mode 100644
index 0000000000..d7efd39f0f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-bottom-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-right-radius disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-bottom-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-bottom-style-001.html
new file mode 100644
index 0000000000..82c24b5f46
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-bottom-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-style disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-style.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-bottom-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-bottom-width-001.html
new file mode 100644
index 0000000000..f26aa76e6a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-bottom-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-bottom-width disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-bottom-width.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-bottom-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-end-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-end-end-radius-001.html
new file mode 100644
index 0000000000..6f75cec2d2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-end-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-end-radius disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-end-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-end-start-radius-001.html
new file mode 100644
index 0000000000..6820c01f10
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-end-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-end-start-radius disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-end-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-end-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-image-outset-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-image-outset-001.html
new file mode 100644
index 0000000000..eceb94c0b6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-image-outset-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-outset disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-outset.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-outset";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-image-repeat-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-image-repeat-001.html
new file mode 100644
index 0000000000..c5861b08bd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-image-repeat-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-repeat disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-repeat.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-repeat";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-image-slice-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-image-slice-001.html
new file mode 100644
index 0000000000..ffe49fda10
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-image-slice-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-slice disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-slice.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-slice";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-image-source-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-image-source-001.html
new file mode 100644
index 0000000000..e8c66dd3b0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-image-source-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-source disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-source.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-source";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-image-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-image-width-001.html
new file mode 100644
index 0000000000..62848f6c7d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-image-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-image-width disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-image-width.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-image-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-inline-end-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-inline-end-color-001.html
new file mode 100644
index 0000000000..96dfb2cb6e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-inline-end-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-color disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-color.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-inline-end-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-inline-end-style-001.html
new file mode 100644
index 0000000000..854bb92df6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-inline-end-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-style disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-style.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-inline-end-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-inline-end-width-001.html
new file mode 100644
index 0000000000..146a6725d9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-inline-end-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-end-width disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-end-width.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-end-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-inline-start-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-inline-start-color-001.html
new file mode 100644
index 0000000000..21250ce8bf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-inline-start-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-color disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-color.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-inline-start-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-inline-start-style-001.html
new file mode 100644
index 0000000000..95fae5cfcd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-inline-start-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-style disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-style.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-inline-start-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-inline-start-width-001.html
new file mode 100644
index 0000000000..fa70544fdb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-inline-start-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-inline-start-width disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-inline-start-width.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-inline-start-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-left-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-left-color-001.html
new file mode 100644
index 0000000000..add41f7ecf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-left-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-color disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-color.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-left-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-left-style-001.html
new file mode 100644
index 0000000000..1a5cb56922
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-left-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-style disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-style.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-left-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-left-width-001.html
new file mode 100644
index 0000000000..9b76bcef47
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-left-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-left-width disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-left-width.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-left-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-right-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-right-color-001.html
new file mode 100644
index 0000000000..e5436513b2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-right-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-color disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-color.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-right-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-right-style-001.html
new file mode 100644
index 0000000000..d01355a909
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-right-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-style disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-style.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-right-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-right-width-001.html
new file mode 100644
index 0000000000..de1fefbaf3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-right-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-right-width disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-right-width.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-right-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-start-end-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-start-end-radius-001.html
new file mode 100644
index 0000000000..2d5d8dcd75
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-start-end-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-end-radius disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-end-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-end-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-start-start-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-start-start-radius-001.html
new file mode 100644
index 0000000000..3c79c908e1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-start-start-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-start-start-radius disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-start-start-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-start-start-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-top-color-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-top-color-001.html
new file mode 100644
index 0000000000..5f79c624f6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-top-color-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-color disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-color.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-color";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-top-left-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-top-left-radius-001.html
new file mode 100644
index 0000000000..a065111193
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-top-left-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-left-radius disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-left-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-left-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-top-right-radius-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-top-right-radius-001.html
new file mode 100644
index 0000000000..786f486e74
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-top-right-radius-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-right-radius disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-right-radius.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-right-radius";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-top-style-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-top-style-001.html
new file mode 100644
index 0000000000..92e3f96b65
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-top-style-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-style disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-style.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-style";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-top-width-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-top-width-001.html
new file mode 100644
index 0000000000..1363260996
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-generated/kind-of-widget-fallback-textarea-border-top-width-001.html
@@ -0,0 +1,27 @@
+<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: border-top-width disables native appearance for textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes border-top-width.">
+<link rel="match" href="../compute-kind-widget-fallback-textarea-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <textarea id="textarea">textarea</textarea>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "border-top-width";
+for (const el of elements) {
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-no-fallback-props-001.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-no-fallback-props-001.html
new file mode 100644
index 0000000000..0533da654f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-no-fallback-props-001.html
@@ -0,0 +1,109 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: properties that DO NOT disable native appearance for widgets</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes properties that don't disable native appearance.">
+<link rel="match" href="compute-kind-widget-no-fallback-ref.html">
+
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+
+<div id="container">
+ <a>a</a>
+ <button id="button">button</button>
+ <input id="button-input" type="button" value="input-button">
+ <input id="submit-input" type="submit" value="input-submit">
+ <input id="reset-input" type="reset" value="input-reset">
+
+ <input id="text-input" type="text" value="input-text">
+ <input id="search-text-input" type="search" value="input-search-text">
+ <input id="search-input" type="search" value="input-search">
+
+ <input id="range-input" type="range">
+ <input id="checkbox-input" type="checkbox">
+ <input id="radio-input" type="radio">
+ <input id="color-input" type="color">
+
+ <textarea id="textarea">textarea</textarea>
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+ <meter id="meter" value=0.5></meter>
+ <progress id="progress" value=0.5></progress>
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const fallbackProps = new Set([
+ 'background-color',
+ 'border-top-color',
+ 'border-top-style',
+ 'border-top-width',
+ 'border-right-color',
+ 'border-right-style',
+ 'border-right-width',
+ 'border-bottom-color',
+ 'border-bottom-style',
+ 'border-bottom-width',
+ 'border-left-color',
+ 'border-left-style',
+ 'border-left-width',
+ 'border-block-start-color',
+ 'border-block-end-color',
+ 'border-inline-start-color',
+ 'border-inline-end-color',
+ 'border-block-start-style',
+ 'border-block-end-style',
+ 'border-inline-start-style',
+ 'border-inline-end-style',
+ 'border-block-start-width',
+ 'border-block-end-width',
+ 'border-inline-start-width',
+ 'border-inline-end-width',
+ 'background-image',
+ 'background-attachment',
+ 'background-position',
+ 'background-clip',
+ 'background-origin',
+ 'background-size',
+ 'border-image-source',
+ 'border-image-slice',
+ 'border-image-width',
+ 'border-image-outset',
+ 'border-image-repeat',
+ 'border-top-left-radius',
+ 'border-top-right-radius',
+ 'border-bottom-right-radius',
+ 'border-bottom-left-radius',
+ 'border-start-start-radius',
+ 'border-start-end-radius',
+ 'border-end-start-radius',
+ 'border-end-end-radius',
+]);
+
+let mutations = []
+
+// Make sure that any supported property that is not in the above list
+// does not affect the widget type.
+const declarations = getComputedStyle(document.documentElement);
+
+for (const prop of declarations) {
+ if (fallbackProps.has(prop)) {
+ continue;
+ }
+ for (const el of elements) {
+ mutations.push([el, prop, getComputedStyle(el).getPropertyValue(prop)]);
+ }
+}
+
+// Batch all setProperty calls together (without calling gCS().getPropertyValue
+// for each mutation) to avoid excessive style recalcs.
+for (let mutation of mutations) {
+ const [el, prop, value] = mutation;
+ el.style.setProperty(prop, value);
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/compute-kind-widget-no-fallback-ref.html b/testing/web-platform/tests/css/css-ui/compute-kind-widget-no-fallback-ref.html
new file mode 100644
index 0000000000..c0e56dc051
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/compute-kind-widget-no-fallback-ref.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Reference: Compute kind of widget - no fallback</title>
+<style>
+ #container { width: 500px; }
+ #container > #search-text-input { appearance: textfield; }
+ #container > #select-menulist-button { appearance: none; appearance: menulist-button; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+
+ <input type="text" value="input-text">
+ <input id="search-text-input" type="search" value="input-search-text">
+ <input type="search" value="input-search">
+
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+
+ <textarea>textarea</textarea>
+ <select multiple id="select-listbox"><option>select-listbox</option></select>
+ <select id="select-dropdown-box"><option>select-dropdown-box</option></select>
+ <select id="select-menulist-button"><option>select-menulist-button</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/crashtests/outline-scrollIntoView-crash.html b/testing/web-platform/tests/css/css-ui/crashtests/outline-scrollIntoView-crash.html
new file mode 100644
index 0000000000..58bbd4c6b4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/crashtests/outline-scrollIntoView-crash.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<link rel="help" title="7.1. 'outline' property" href="http://www.w3.org/TR/css3-ui/#outline">
+<link rel="author" title="Koji Ishii" href="mailto:kojii@chromium.org">
+<body onload="run_test()">
+ <span id="root"></span>
+<script>
+function build_tree(n) {
+ let last_leaf = root;
+ for (let i = 0; i < n; ++i) {
+ const div = document.createElement('div');
+ const inline_box = document.createElement('span');
+ div.appendChild(inline_box);
+ last_leaf.appendChild(div);
+ last_leaf = inline_box;
+ }
+}
+build_tree(30);
+
+function run_test() {
+ root.scrollIntoView();
+}
+</script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-001.html b/testing/web-platform/tests/css/css-ui/cursor-001.html
new file mode 100644
index 0000000000..6f46a6bb2a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-001.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor: none</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'none' cursor value is supported">
+<style>
+div {
+ cursor: url("support/cursors/fail.png"), help;
+ cursor: none;
+ width: 100px;
+ height: 100px;
+ border: solid blue;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue box, the cursor disappears.</p>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-002.html b/testing/web-platform/tests/css/css-ui/cursor-002.html
new file mode 100644
index 0000000000..029a5de9c2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-002.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor: context-menu</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'context-menu' cursor value is supported">
+<style>
+div {
+ cursor: url("support/cursors/fail.png"), help;
+ cursor: context-menu;
+ width: 100px;
+ height: 100px;
+ border: solid blue;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue box, the cursor indicates availability of a context menu.
+ Often rendered as an arrow with a small menu-like graphic next to it.</p>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-003.html b/testing/web-platform/tests/css/css-ui/cursor-003.html
new file mode 100644
index 0000000000..f7dbbb94b6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-003.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor: cell</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'cell' cursor value is supported">
+<style>
+div {
+ cursor: url("support/cursors/fail.png"), help;
+ cursor: cell;
+ width: 100px;
+ height: 100px;
+ border: solid blue;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue box, the cursor indicates that a cell or set of cells may be selected.
+ Often rendered as a thick plus-sign with a dot in the middle.</p>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-004.html b/testing/web-platform/tests/css/css-ui/cursor-004.html
new file mode 100644
index 0000000000..44c175c2e8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-004.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor: vertical-text</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'vertical-text' cursor value is supported">
+<style>
+div {
+ cursor: url("support/cursors/fail.png"), help;
+ cursor: vertical-text;
+ width: 100px;
+ height: 100px;
+ border: solid blue;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue box, the cursor indicates vertical-text that may be selected.
+ Often rendered as a horizontal I-beam.</p>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-005.html b/testing/web-platform/tests/css/css-ui/cursor-005.html
new file mode 100644
index 0000000000..fc0d9e74c2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-005.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor: alias</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'alias' cursor value is supported">
+<style>
+div {
+ cursor: url("support/cursors/fail.png"), help;
+ cursor: alias;
+ width: 100px;
+ height: 100px;
+ border: solid blue;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue box, the cursor indicates an alias of/shortcut to something is to be created.
+ Often rendered as an arrow with a small curved arrow next to it.</p>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-006.html b/testing/web-platform/tests/css/css-ui/cursor-006.html
new file mode 100644
index 0000000000..acfba8d330
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-006.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor: copy</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'copy' cursor value is supported">
+<style>
+div {
+ cursor: url("support/cursors/fail.png"), help;
+ cursor: copy;
+ width: 100px;
+ height: 100px;
+ border: solid blue;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue box, the cursor indicates something is to be copied.
+ Often rendered as an arrow with a small plus sign next to it.</p>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-007.html b/testing/web-platform/tests/css/css-ui/cursor-007.html
new file mode 100644
index 0000000000..c93d7655b7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-007.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor: no-drop</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'no-drop' cursor value is supported">
+<style>
+div {
+ cursor: url("support/cursors/fail.png"), help;
+ cursor: no-drop;
+ width: 100px;
+ height: 100px;
+ border: solid blue;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue box, the cursor indicates that the dragged item cannot be dropped at the current cursor location.
+ Often rendered as a hand or pointer with a small circle with a line through it.</p>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-008.html b/testing/web-platform/tests/css/css-ui/cursor-008.html
new file mode 100644
index 0000000000..290f10809c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-008.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor: not-allowed</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'not-allowed' cursor value is supported">
+<style>
+div {
+ cursor: url("support/cursors/fail.png"), help;
+ cursor: not-allowed;
+ width: 100px;
+ height: 100px;
+ border: solid blue;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue box, the cursor indicates that the requested action will not be carried out.
+ Often rendered as a circle with a line through it.</p>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-009.html b/testing/web-platform/tests/css/css-ui/cursor-009.html
new file mode 100644
index 0000000000..0c2baf8f23
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-009.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor: grab</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'grab' cursor value is supported">
+<style>
+div {
+ cursor: url("support/cursors/fail.png"), help;
+ cursor: grab;
+ width: 100px;
+ height: 100px;
+ border: solid blue;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue box, the cursor indicates that something can be grabbed (dragged to be moved).
+ Often rendered as the backside of an open hand.</p>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-010.html b/testing/web-platform/tests/css/css-ui/cursor-010.html
new file mode 100644
index 0000000000..0449c8999d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-010.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor: grabbing</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'grabbing' cursor value is supported">
+<style>
+div {
+ cursor: url("support/cursors/fail.png"), help;
+ cursor: grabbing;
+ width: 100px;
+ height: 100px;
+ border: solid blue;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue box, the cursor indicates that something is being grabbed (dragged to be moved).
+ Often rendered as the backside of a hand with fingers closed mostly out of view.</p>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-011.html b/testing/web-platform/tests/css/css-ui/cursor-011.html
new file mode 100644
index 0000000000..bc0e73582a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-011.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor: ew-resize</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'ew-resize' cursor value is supported">
+<style>
+div {
+ cursor: url("support/cursors/fail.png"), help;
+ cursor: ew-resize;
+ width: 100px;
+ height: 100px;
+ border: solid blue;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue box, the cursor indicates that something can be resized horizontally, bidirectionally.
+ Often rendered as arrows pointing left and right.</p>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-012.html b/testing/web-platform/tests/css/css-ui/cursor-012.html
new file mode 100644
index 0000000000..015863017c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-012.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor: ns-resize</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'ns-resize' cursor value is supported">
+<style>
+div {
+ cursor: url("support/cursors/fail.png"), help;
+ cursor: ns-resize;
+ width: 100px;
+ height: 100px;
+ border: solid blue;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue box, the cursor indicates that something can be resized vertically, bidirectionally.
+ Often rendered as arrows pointing up and down.</p>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-013.html b/testing/web-platform/tests/css/css-ui/cursor-013.html
new file mode 100644
index 0000000000..72947f000b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-013.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor: nesw-resize</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'nesw-resize' cursor value is supported">
+<style>
+div {
+ cursor: url("support/cursors/fail.png"), help;
+ cursor: nesw-resize;
+ width: 100px;
+ height: 100px;
+ border: solid blue;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue box, the cursor indicates that something can be resized diagonally
+ along a north-east to south-west axis, bidirectionally.
+ Often rendered as arrows pointing north-east and south-west.</p>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-014.html b/testing/web-platform/tests/css/css-ui/cursor-014.html
new file mode 100644
index 0000000000..a7fa465df8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-014.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor: nwse-resize</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'nwse-resize' cursor value is supported">
+<style>
+div {
+ cursor: url("support/cursors/fail.png"), help;
+ cursor: nwse-resize;
+ width: 100px;
+ height: 100px;
+ border: solid blue;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue box, the cursor indicates that something can be resized diagonally
+ along a north-west to south-east axis, bidirectionally.
+ Often rendered as arrows pointing north-west and south-east.</p>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-015.html b/testing/web-platform/tests/css/css-ui/cursor-015.html
new file mode 100644
index 0000000000..88e0a5cbfc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-015.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor: col-resize</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'col-resize' cursor value is supported">
+<style>
+div {
+ cursor: url("support/cursors/fail.png"), help;
+ cursor: col-resize;
+ width: 100px;
+ height: 100px;
+ border: solid blue;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue box, the cursor indicates that something can be resized horizontally, bidirectionally.
+ Often rendered as arrows pointing left and right with a vertical bar separating them.</p>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-016.html b/testing/web-platform/tests/css/css-ui/cursor-016.html
new file mode 100644
index 0000000000..e4aa0465dd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-016.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor: row-resize</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'row-resize' cursor value is supported">
+<style>
+div {
+ cursor: url("support/cursors/fail.png"), help;
+ cursor: row-resize;
+ width: 100px;
+ height: 100px;
+ border: solid blue;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue box, the cursor indicates that something can be resized vertically, bidirectionally.
+ Often rendered as arrows pointing up and down with a horizontal bar separating them.</p>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-017.html b/testing/web-platform/tests/css/css-ui/cursor-017.html
new file mode 100644
index 0000000000..99528fede3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-017.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor: all-scroll</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'all-scroll' cursor value is supported">
+<style>
+div {
+ cursor: url("support/cursors/fail.png"), help;
+ cursor: all-scroll;
+ width: 100px;
+ height: 100px;
+ border: solid blue;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue box, the cursor indicates that the something can be scrolled in any direction.
+ Often rendered as arrows pointing up, down, left, and right with a dot in the middle.</p>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-018.html b/testing/web-platform/tests/css/css-ui/cursor-018.html
new file mode 100644
index 0000000000..daaa7f69e8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-018.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor: zoom-in</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'zoom-in' cursor value is supported">
+<style>
+div {
+ cursor: url("support/cursors/fail.png"), help;
+ cursor: zoom-in;
+ width: 100px;
+ height: 100px;
+ border: solid blue;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue box, the cursor indicates that something can be zoomed in.
+ Often rendered as a magnifying glass with a "+" in the center of the glass.</p>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-019.html b/testing/web-platform/tests/css/css-ui/cursor-019.html
new file mode 100644
index 0000000000..5be9de10b8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-019.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor: zoom-out</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'zoom-out' cursor value is supported">
+<style>
+div {
+ cursor: url("support/cursors/fail.png"), help;
+ cursor: zoom-out;
+ width: 100px;
+ height: 100px;
+ border: solid blue;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue box, the cursor indicates that something can be zoomed out.
+ Often rendered as a magnifying glass with a "-" in the center of the glass.</p>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-020.html b/testing/web-platform/tests/css/css-ui/cursor-020.html
new file mode 100644
index 0000000000..f079d0a56c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-020.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor: pointer</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'pointer' cursor value is supported">
+<style>
+div {
+ cursor: url("support/cursors/fail.png"), help;
+ cursor: pointer;
+ width: 100px;
+ height: 100px;
+ border: solid blue;
+}
+</style>
+<body>
+<p>The test passes if, when moved inside the blue box, the cursor indicates a link. Often rendered as the backside of a hand with the index finger poiting and the other fingers closed.</p>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-auto-001.html b/testing/web-platform/tests/css/css-ui/cursor-auto-001.html
new file mode 100644
index 0000000000..2b2ee60cbc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-auto-001.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor:auto on text</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'auto' cursor value does the same as 'text' over text.">
+<style>
+div {
+ cursor: url("support/cursors/fail.png"), help;
+ cursor: auto;
+ color: blue;
+}
+p {
+ cursor: text;
+}
+</style>
+<body>
+ <p>The test passes if, when moved over the blue text, the cursor indicates text that may be selected, like it does when placed over this sentence.</p>
+ <div>Lorem ipsum</div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-auto-002.html b/testing/web-platform/tests/css/css-ui/cursor-auto-002.html
new file mode 100644
index 0000000000..dd0d5a1c05
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-auto-002.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor:auto on links</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'auto' cursor value does the same as 'text' over text. Links are not special.">
+<style>
+a {
+ cursor: url("support/cursors/fail.png"), help; /* Override UA styles, regardless of specificity */
+ cursor: auto !important; /* Override UA styles, regardless of specificity */
+ color: blue;
+ text-decoration: none; /* Having the link not standout as being a link, to avoid distracting the tester */
+}
+p {
+ cursor: text;
+}
+</style>
+<body>
+ <p>The test passes if, when moved over the blue text, the cursor indicates text that may be selected, like it does when placed over this sentence.</p>
+ <a href="#">Lorem ipsum</a>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-auto-003.html b/testing/web-platform/tests/css/css-ui/cursor-auto-003.html
new file mode 100644
index 0000000000..a3782dbef5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-auto-003.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor:auto on non-textual links</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'auto' cursor value does the same as 'default' over non textual content. Links are not special.">
+<style>
+a {
+ cursor: url("support/cursors/fail.png"), help; /* Override UA styles, regardless of specificity */
+ cursor: auto !important; /* Override UA styles, regardless of specificity */
+}
+#ref {
+ cursor: default;
+ width: 100px;
+ height: 100px;
+ border: solid orange;
+}
+:root {
+ cursor: help; /* give the root element a different cursor so that
+ it is easy to tell if something changes when hovering the target.*/
+}
+</style>
+<body>
+ <p>The test passes if, when moved over the image below, the cursor is the platform-dependent default cursor.</p>
+ <p>Place the cursor into the orange box for a reference of what this should look like.</p>
+ <a href="#"><img src="support/cursors/woolly-64.png"></a>
+ <div id=ref></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-auto-004.html b/testing/web-platform/tests/css/css-ui/cursor-auto-004.html
new file mode 100644
index 0000000000..820a93303c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-auto-004.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor:auto on empty space</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'auto' cursor value does the same as 'default' over non-textual content.">
+<style>
+div {
+ width: 100px;
+ height: 100px;
+}
+#test {
+ cursor: url("support/cursors/fail.png"), help;
+ cursor: auto;
+ border: solid blue;
+}
+#ref {
+ cursor: default;
+ border: solid orange;
+}
+:root {
+ cursor: help; /* give the root element a different cursor so that
+ it is easy to tell if something changes when hovering the target.*/
+}
+</style>
+<body>
+ <p>The test passes if, when inside the blue box, the cursor is the platform-dependent default cursor.</p>
+ <p>Place the cursor into the orange box for a reference of what this should look like.</p>
+ <div id=test></div>
+ <div id=ref></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-auto-005.html b/testing/web-platform/tests/css/css-ui/cursor-auto-005.html
new file mode 100644
index 0000000000..cb5ab8e5a5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-auto-005.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor:auto on form elements</title>
+<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'auto' cursor value does the same as 'default' over everything other than selectable text or editable elements, such as form elements that do not take text input.">
+<style>
+#test {
+ border: solid blue;
+ width: 200px;
+ cursor: auto;
+}
+#test * {
+ cursor: url("support/cursors/fail.png"), help !important; /* Override UA styles, regardless of specificity */
+ cursor: auto !important; /* Override UA styles, regardless of specificity */
+ resize: none; /* The appearance of the cursor over UA provided resize controls is out of scope. */
+ overflow: hidden; /* The appearance of the cursor over UA provided scroll controls is out of scope */
+}
+#ref {
+ width: 100px;
+ height: 100px;
+ cursor: default;
+ border: solid orange;
+}
+:root {
+ cursor: help; /* give the root element a different cursor so that
+ it is easy to tell if something changes when hovering the target.*/
+}
+</style>
+<body>
+ <p>The test passes if, when moved over every element inside the blue box, the cursor remains the platform-dependent default cursor.</p>
+ <p>Place the cursor into the orange box for a reference of what this should look like.</p>
+ <div id=test>
+ <button>button</button>
+ <input type=button value=input-button>
+ <select></select>
+ </div>
+ <div id=ref></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-auto-006.html b/testing/web-platform/tests/css/css-ui/cursor-auto-006.html
new file mode 100644
index 0000000000..7385beec8e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-auto-006.html
@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor:auto on editable elements</title>
+<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'auto' cursor value does the same as 'text' over editable elements.">
+<style>
+#test {
+ border: solid blue;
+ width: 200px;
+ cursor: auto;
+}
+#test * {
+ cursor: url("support/cursors/fail.png"), help !important; /* Override UA styles, regardless of specificity */
+ cursor: auto !important; /* Override UA styles, regardless of specificity */
+ resize: none; /* The appearance of the cursor over UA provided resize controls is out of scope. */
+ overflow: hidden; /* The appearance of the cursor over UA provided scroll controls is out of scope */
+}
+#ref {
+ width: 100px;
+ height: 100px;
+ cursor: text;
+ border: solid orange;
+}
+:root {
+ cursor: help; /* give the root element a different cursor so that
+ it is easy to tell if something changes when hovering the target.*/
+}
+
+[contenteditable] {
+ border: solid;
+ height: 1em;
+ margin: 5px;
+}
+</style>
+<body>
+ <p>The test passes if, when moved over every element inside the blue box, the cursor looks like the text insertion and selection cursor.</p>
+ <p>Place the cursor into the orange box for a reference of what this should look like.</p>
+ <div id=test>
+ <textarea></textarea>
+ <input>
+ <div contenteditable=true style="border:solid"></div>
+ </div>
+ <div id=ref></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-auto-007.html b/testing/web-platform/tests/css/css-ui/cursor-auto-007.html
new file mode 100644
index 0000000000..0d355ad0d9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-auto-007.html
@@ -0,0 +1,55 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor:auto on unselectable text</title>
+<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#content-selection">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The 'auto' cursor value does the same as 'default' over unselectable text.">
+<style>
+#test {
+ border: solid blue;
+ width: 200px;
+ cursor: auto;
+}
+#test * {
+ cursor: url("support/cursors/fail.png"), help !important; /* Override UA styles, regardless of specificity */
+ cursor: auto !important; /* Override UA styles, regardless of specificity */
+}
+#ref {
+ width: 100px;
+ height: 100px;
+ cursor: default;
+ border: solid orange;
+}
+:root {
+ cursor: help; /* give the root element a different cursor so that
+ it is easy to tell if something changes when hovering the target.*/
+}
+
+/* Hide the text if we cannot make it unselectable.
+ user-select is not part of css-ui level 3, so we should not depend on it
+ but it is nice to test it if it is supported.
+ Test for level 4 can take the conditional out. */
+.unselectable { display: none; }
+@supports (user-select: none) or (-webkit-user-select: none) {
+ .unselectable {
+ display: block;
+ user-select: none;
+ -webkit-user-select: none;
+ }
+}
+
+</style>
+<body>
+ <p>The test passes if, when moved over every element inside the blue box, the cursor remains the platform-dependent default cursor.</p>
+ <p>Place the cursor into the orange box for a reference of what this should look like.</p>
+ <div id=test>
+ <!-- text in a button is either not considered text because it's in a replaced element,
+ or it is text but it is unselectable, eitherway, we should get the default cursor-->
+ <button>Text in a button</button>
+
+ <div class=unselectable>Unselectable text</div>
+ </div>
+ <div id=ref></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-border-area.html b/testing/web-platform/tests/css/css-ui/cursor-border-area.html
new file mode 100644
index 0000000000..3f5d9d8c9e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-border-area.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor on the border area</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The cursor property is applied over the border area.">
+<style>
+div {
+ border: solid 50px blue;
+ cursor: crosshair;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue rectangle, the cursor looks like a crosshair (e.g. short line segments resembling a "+" sign).</p>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-box-004.html b/testing/web-platform/tests/css/css-ui/cursor-box-004.html
new file mode 100644
index 0000000000..80728ca8d7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-box-004.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor on the margin-box</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The cursor property is not applied over the margin box.">
+<style>
+#container {
+ position: absolute;
+ background: blue;
+ cursor: crosshair;
+}
+#test {
+ margin: 100px 50px;
+ cursor: url("support/cursors/fail.png"), help;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue box, the cursor looks like a crosshair (e.g. short line segments resembling a "+" sign).</p>
+ <div id=container><div id=test></div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-box-005.html b/testing/web-platform/tests/css/css-ui/cursor-box-005.html
new file mode 100644
index 0000000000..36c9be9deb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-box-005.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor on transparent borders</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The cursor property is applied over the border box, even if the border is transparent.">
+<style>
+#container {
+ position: absolute;
+ background: blue;
+ cursor: url("support/cursors/fail.png"), help;
+}
+#test {
+ border: solid transparent 50px;
+ cursor: crosshair;
+}
+</style>
+<body>
+ <p>The test passes if, when moved over the blue box, the cursor looks like a crosshair (e.g. short line segments resembling a "+" sign).</p>
+ <div id=container><div id=test></div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-box-006.html b/testing/web-platform/tests/css/css-ui/cursor-box-006.html
new file mode 100644
index 0000000000..135b0a4c7d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-box-006.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor on border images extending out of the border-box</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The cursor property is not applied outside of the border box, even if border images do extend further out.">
+<style>
+#container {
+ position: absolute;
+ padding: 50px;
+ cursor: crosshair;
+}
+#test{
+ border-image: linear-gradient(blue, blue);
+ border-image-outset: 50px;
+ border-image-width: 50px;
+ border-style: solid;
+ border-width: 5px;
+ border-color: white;
+ cursor: url("support/cursors/fail.png"), help;
+}
+</style>
+<body>
+ <p>The test passes if, when moved over the blue boxes, the cursor looks like a crosshair (e.g. short line segments resembling a "+" sign).
+ The shape of the cursor when it is over white areas is not part of this test.</p>
+ <div id=container><div id=test></div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-box-007.html b/testing/web-platform/tests/css/css-ui/cursor-box-007.html
new file mode 100644
index 0000000000..5fe0013b60
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-box-007.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor on the margin-box</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The cursor property is only applied within the border-edge, which follows border-radius.">
+<style>
+#container {
+ position: absolute;
+ background: blue;
+ cursor: crosshair;
+}
+#test {
+ border: solid white 50px;
+ border-radius: 50%;
+ cursor: default;
+}
+</style>
+<body>
+ <p>The test passes if, when moved over the blue areas, the cursor looks like a crosshair (e.g. short line segments resembling a "+" sign).</p>
+ <div id=container><div id=test></div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-content-area.html b/testing/web-platform/tests/css/css-ui/cursor-content-area.html
new file mode 100644
index 0000000000..f0f0d4dc67
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-content-area.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor on the content area</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The cursor property is applied over the content area, as it is strictly inside the border edge.">
+<style>
+div {
+ background: blue;
+ height: 100px;
+ cursor: crosshair;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue rectangle, the cursor looks like a crosshair (e.g. short line segments resembling a "+" sign).</p>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-hover-001.html b/testing/web-platform/tests/css/css-ui/cursor-hover-001.html
new file mode 100644
index 0000000000..8e6bdc96c1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-hover-001.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor and :hover</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="Checks that the correct cursor is used when :hover appears at the rightmost part of the selector.">
+<style>
+div {
+ cursor: url("support/cursors/fail.png"), help;
+ width: 100px;
+ height: 100px;
+ border: solid blue;
+}
+div:hover {
+ cursor: crosshair;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue box, the cursor looks like a crosshair (e.g. short line segments resembling a "+" sign).</p>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-hover-002.html b/testing/web-platform/tests/css/css-ui/cursor-hover-002.html
new file mode 100644
index 0000000000..4926d0cf50
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-hover-002.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor and :hover on ancestor</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="Checks that the correct cursor is used when :hover appears in the selector other than at the rightmost part.">
+<style>
+div {
+ cursor: url("support/cursors/fail.png"), help;
+ width: 100px;
+ height: 100px;
+ border: solid blue;
+}
+:hover div {
+ cursor: crosshair;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue box, the cursor looks like a crosshair (e.g. short line segments resembling a "+" sign).</p>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-hover-003.html b/testing/web-platform/tests/css/css-ui/cursor-hover-003.html
new file mode 100644
index 0000000000..4611be5279
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-hover-003.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor, :hover and inheritance</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="Checks that a cursor set on an ancestor with the :hover pseudo class is properly inherited to the hovered child.">
+<style>
+#d1 {
+ width: 0;
+ height: 0;
+ position: relative;
+ cursor: url("support/cursors/fail.png"), help;
+}
+#d2 {
+ position: absolute;
+ top: 0; left: 0;
+ width: 100px;
+ height: 100px;
+ border: solid blue;
+}
+#d1:hover {
+ cursor: crosshair;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue box, the cursor looks like a crosshair (e.g. short line segments resembling a "+" sign).</p>
+ <div id=d1><div id=d2></div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-001.html b/testing/web-platform/tests/css/css-ui/cursor-image-001.html
new file mode 100644
index 0000000000..de92ec643b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-001.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, url value</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="reviewer" title="Florian Rivoal" href="http://florian.rivoal.net/"> <!-- 2015-04-12 -->
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact image">
+<meta charset="UTF-8">
+<meta name="assert" content="Test checks that a PNG image supported as a custom cursor.">
+<style>
+ div.test{background: #D2B48C; border: 2px solid #555;
+ cursor:url(support/cursors/woolly-64.png) 41 32, help;
+ width: 128px; height: 128px}
+</style>
+<body>
+ <p>The test passes if, when moved inside the colored rectangle, the cursor looks like a sheep AND is not a sheep when outside.</p>
+ <p>If inside the rectangle the cursor does not change, or looks like a help cursor, the test fails.</p>
+ <div class="test"> </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-002.html b/testing/web-platform/tests/css/css-ui/cursor-image-002.html
new file mode 100644
index 0000000000..2281875e6e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-002.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, url value</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="reviewer" title="Florian Rivoal" href="http://florian.rivoal.net/"> <!-- 2015-04-12 -->
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact image">
+<meta charset="UTF-8">
+<meta name="assert" content="Test checks that a PNG image supported as a custom cursor, loaded cross-domain with absolute url.">
+<style>
+ div.test{background: #D2B48C; border: 2px solid #555;
+ cursor:url(http://www.w3.org/Style/Woolly/woolly-mc.png) 41 32, help;
+ width: 128px; height: 128px}
+</style>
+<body>
+ <p>The test passes if, when moved inside the colored rectangle, the cursor looks like a sheep AND is not a sheep when outside.</p>
+ <p>If inside the rectangle the cursor does not change, or looks like a help cursor, the test fails.</p>
+ <div class="test"> </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-003.html b/testing/web-platform/tests/css/css-ui/cursor-image-003.html
new file mode 100644
index 0000000000..4391fe3eab
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-003.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, url value</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="reviewer" title="Florian Rivoal" href="http://florian.rivoal.net/"> <!-- 2015-04-12 -->
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact image may">
+<meta charset="UTF-8">
+<meta name="assert" content="Test checks that an ICO image is supported as a custom cursor.">
+
+<style>
+ div.test{background: #D2B48C; border: 2px solid #555;
+ cursor:url(support/cursors/woolly-64.ico), help;
+ width: 128px; height: 128px}
+</style>
+<body>
+ <p>The test passes if, when moved inside the colored rectangle, the cursor looks like a sheep AND is not a sheep when outside.</p>
+ <p>If inside the rectangle the cursor does not change, or looks like a help cursor, the test fails.</p>
+ <div class="test"> </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-004.html b/testing/web-platform/tests/css/css-ui/cursor-image-004.html
new file mode 100644
index 0000000000..3242e3cc6a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-004.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, url value</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="reviewer" title="Florian Rivoal" href="http://florian.rivoal.net/"> <!-- 2015-04-12 -->
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact image may">
+<meta charset="UTF-8">
+<meta name="assert" content="Test checks that an ICO image, with its own hotspot, is supported as a custom cursor.">
+<style>
+ div.test{background: #D2B48C; border: 2px solid #555;
+ cursor:url(support/cursors/woolly-64.cur), help;
+ width: 128px; height: 128px}
+</style>
+<body>
+ <p>The test passes if, when moved inside the colored rectangle, the cursor looks like a sheep AND is not a sheep when outside.</p>
+ <p>If inside the rectangle the cursor does not change, or looks like a help cursor, the test fails.</p>
+ <div class="test"> </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-005-nfs.html b/testing/web-platform/tests/css/css-ui/cursor-image-005-nfs.html
new file mode 100644
index 0000000000..e7396d212d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-005-nfs.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, url value</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="reviewer" title="Florian Rivoal" href="http://florian.rivoal.net/"> <!-- 2015-04-12 -->
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<link rel="help" href="http://www.w3.org/TR/css3-images/#default-object-size">
+<meta name="flags" content="interact svg may">
+<meta charset="UTF-8">
+<meta name="assert" content="Test checks that an SVG image with no fixed size is supported as a custom cursor at the default object size for cursor images.">
+<style>
+ div.test{background: #D2B48C; border: 2px solid #555;
+ cursor:url(support/cursors/woolly.svg) 41 32, help;
+ width: 128px; height: 128px}
+</style>
+<body>
+ <p>The test passes if, when moved inside the colored rectangle, the cursor looks like a sheep AND is not a sheep when outside.</p>
+ <p>If inside the rectangle the cursor does not change, or looks like a help cursor, the test fails.</p>
+ <div class="test"> </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-005.html b/testing/web-platform/tests/css/css-ui/cursor-image-005.html
new file mode 100644
index 0000000000..32ac968342
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-005.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, url value</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="reviewer" title="Florian Rivoal" href="http://florian.rivoal.net/"> <!-- 2015-04-12 -->
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact svg">
+<meta charset="UTF-8">
+<meta name="assert" content="Test checks that a fixed size SVG image is supported as a custom cursor.">
+<style>
+ div.test{background: #D2B48C; border: 2px solid #555;
+ cursor:url(support/cursors/woolly-64.svg) 41 32, help;
+ width: 128px; height: 128px}
+</style>
+<body>
+ <p>The test passes if, when moved inside the colored rectangle, the cursor looks like a sheep AND is not a sheep when outside.</p>
+ <p>If inside the rectangle the cursor does not change, or looks like a help cursor, the test fails.</p>
+ <div class="test"> </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-006.html b/testing/web-platform/tests/css/css-ui/cursor-image-006.html
new file mode 100644
index 0000000000..c123a65f2a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-006.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, url value</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact image animated may">
+<meta charset="UTF-8">
+<meta name="assert" content="Test checks that an ANI image, with it's own hotspot, is supported as a custom cursor.">
+<style>
+ div.test{background: #D2B48C; border: 2px solid #555;
+ cursor:url(support/cursors/BlueButterfly.ani), help;
+ width: 128px; height: 128px}
+</style>
+<body>
+ <p>The test passes if, when moved inside the colored rectangle, the cursor looks like an animated butterfly AND is not a butterfly when outside.</p>
+ <p>If inside the rectangle the cursor does not change, or looks like a help cursor, the test fails.</p>
+ <div class="test"> </div>
+ <p class="attribution">Cursor by Vlasta, used here under a CC-BY license.</p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-007.html b/testing/web-platform/tests/css/css-ui/cursor-image-007.html
new file mode 100644
index 0000000000..6433142e3c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-007.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, url value</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact image svg">
+<meta charset="UTF-8">
+<meta name="assert" content="Test checks that a compressed, fixed size SVG image is supported as a custom cursor.">
+<style>
+ div.test{background: #D2B48C; border: 2px solid #555;
+ cursor:url(support/cursors/woolly-64.svgz) 41 32, help;
+ width: 128px; height: 128px}
+</style>
+<body>
+ <p>The test passes if, when moved inside the colored rectangle, the cursor looks like a sheep AND is not a sheep when outside.</p>
+ <p>If inside the rectangle the cursor does not change, or looks like a help cursor, the test fails.</p>
+ <div class="test"> </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-008.html b/testing/web-platform/tests/css/css-ui/cursor-image-008.html
new file mode 100644
index 0000000000..e5bb5c97bd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-008.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, url value fallback</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact image">
+<meta charset="UTF-8">
+<meta name="assert" content="Test checks that non-existent images cause the fallback to be used.">
+<style>
+ div.test{background: #D2B48C; border: 2px solid #555;
+ cursor:url(support/cursors/does-not-exist.png) 41 32, help;
+ width: 128px; height: 128px}
+</style>
+<body>
+ <p>The test passes if, when moved inside the colored rectangle, a help cursor is displayed AND
+ there is no help cursor when outside.</p>
+ <p>If inside the rectangle the cursor does not change, the test fails.</p>
+ <div class="test"> </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-009.html b/testing/web-platform/tests/css/css-ui/cursor-image-009.html
new file mode 100644
index 0000000000..2336bd0744
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-009.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, url value, no fallback</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="reviewer" title="Florian Rivoal" href="http://florian.rivoal.net/"> <!-- 2015-04-12 -->
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact image invalid">
+<meta charset="UTF-8">
+<meta name="assert" content="Test checks that a fallback cursor is required.">
+<style>
+ div.test{background: #D2B48C; border: 2px solid #555;
+ cursor:url(support/cursors/fail.cur);
+ width: 128px; height: 128px}
+</style>
+<body>
+ <p>The test passes if, when moved inside the the colored rectangle, the
+ cursor does not change.</p>
+ <p>If inside the rectangle the cursor changes to the word "FAIL" on a red
+ background, the test fails.</p>
+ <div class="test"> </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-010.html b/testing/web-platform/tests/css/css-ui/cursor-image-010.html
new file mode 100644
index 0000000000..3627db1809
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-010.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, url value</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact image">
+<meta charset="UTF-8">
+<meta name="assert" content="Test checks that a GIF image is supported as a custom cursor.">
+
+<style>
+ div.test{background: #D2B48C; border: 2px solid #555;
+ cursor:url(support/cursors/basn0g08.gif), help;
+ width: 128px; height: 128px}
+</style>
+<body>
+ <p>The test passes if, when moved inside the colored rectangle, the cursor looks like gray stripes AND is not gray stripes when outside.</p>
+ <p>If inside the rectangle the cursor does not change, or looks like a help cursor, the test fails.</p>
+ <div class="test"> </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-011.html b/testing/web-platform/tests/css/css-ui/cursor-image-011.html
new file mode 100644
index 0000000000..85defa6758
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-011.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, url value</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact image">
+<meta charset="UTF-8">
+<meta name="assert" content="Test checks that a GIF image with transparency is supported as a custom cursor.">
+
+<style>
+ div.test{background: #D2B48C; border: 2px solid #555;
+ cursor:url(support/cursors/tp1n3p08.gif), help;
+ width: 128px; height: 128px}
+</style>
+<body>
+ <p>The test passes if, when moved inside the colored rectangle, the cursor looks like
+ a gray cube AND is not a gray cube when outside.</p>
+ <p>If inside the rectangle the cursor does not change, or looks like a help cursor, the test fails.</p>
+ <p>White haloing around the cursor is acceptable in this test.</p>
+ <div class="test"> </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-012.html b/testing/web-platform/tests/css/css-ui/cursor-image-012.html
new file mode 100644
index 0000000000..122b62cf86
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-012.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, url value</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="reviewer" title="Florian Rivoal" href="http://florian.rivoal.net/"> <!-- 2015-04-12 -->
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact image">
+<meta charset="UTF-8">
+<meta name="assert" content="Test checks that a JPEG/JFIF image is supported as a custom cursor.">
+
+<style>
+ div.test{background: #D2B48C; border: 2px solid #555;
+ cursor:url(support/cursors/rainbow.jpg), help;
+ width: 128px; height: 128px}
+</style>
+<body>
+ <p>The test passes if, when moved inside the colored rectangle, the cursor looks like
+ a rainbow AND is not a rainbow when outside.</p>
+ <p>If inside the rectangle the cursor does not change, or looks like a help cursor, the test fails.</p>
+ <div class="test"> </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-013.html b/testing/web-platform/tests/css/css-ui/cursor-image-013.html
new file mode 100644
index 0000000000..361b3e2e10
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-013.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, gradient image value</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact image may">
+<meta charset="UTF-8">
+<meta name="assert" content="For cursors, UAs may support gradients, which are part of <image> value type">
+
+<style>
+div.test{
+ background: #D2B48C; border: 2px solid #555;
+ cursor: linear-gradient(blue, green), help;
+ width: 128px; height: 128px;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the colored rectangle, the cursor looks like
+ a blue to green gradient.</p>
+ <p>If inside the rectangle the cursor does not change, or looks like a help cursor, the test fails.</p>
+ <div class="test"> </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-014.html b/testing/web-platform/tests/css/css-ui/cursor-image-014.html
new file mode 100644
index 0000000000..58b5311f60
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-014.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, image() value</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact image may">
+<meta charset="UTF-8">
+<meta name="assert" content="For cursors, UAs may support the image() function, which are part of <image> value type.">
+
+<style>
+div.test{
+ background: #D2B48C; border: 2px solid #555;
+ cursor: image(green), help;
+ width: 128px; height: 128px;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the colored rectangle, the cursor looks like
+ a solid patch of green.</p>
+ <p>If inside the rectangle the cursor does not change, or looks like a help cursor, the test fails.</p>
+ <div class="test"> </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-015.html b/testing/web-platform/tests/css/css-ui/cursor-image-015.html
new file mode 100644
index 0000000000..108bb2a137
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-015.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, image-set() value</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#cursor">
+<meta name="flags" content="interact image">
+<meta charset="UTF-8">
+<meta name="assert" content="For cursors, UAs must support image-set() containing simple url() based images">
+
+<style>
+div.test{
+ background: #D2B48C; border: 2px solid #555;
+ cursor: image-set( "support/cursors/woolly-64.ico" 1x), image-set( "support/cursors/woolly-64.png" 1x), help;
+ width: 128px; height: 128px;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the colored rectangle, the cursor looks like
+ a sheep.</p>
+ <p>If inside the rectangle the cursor does not change, or looks like a help cursor, the test fails.</p>
+ <div class="test"> </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-016.html b/testing/web-platform/tests/css/css-ui/cursor-image-016.html
new file mode 100644
index 0000000000..a4ab6630f0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-016.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, cross-fade image value</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact image may">
+<meta charset="UTF-8">
+<meta name="assert" content="For cursors, UAs may support cross-fade(), which is part of <image> value type">
+
+<style>
+div.test{
+ background: #D2B48C; border: 2px solid #555;
+ cursor: cross-fade( url("support/cursors/woolly-64.ico"), green), cross-fade( url("support/cursors/woolly-64.png"), green), help;
+ width: 128px; height: 128px;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the colored rectangle, the cursor looks like
+ a green sheep.</p>
+ <p>If inside the rectangle the cursor does not change, or looks like a help cursor, the test fails.</p>
+ <div class="test"> </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-017.html b/testing/web-platform/tests/css/css-ui/cursor-image-017.html
new file mode 100644
index 0000000000..f60aec02d6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-017.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, fallback images</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact image">
+<meta charset="UTF-8">
+<meta name="assert" content="If the user agent cannot handle the first cursor of a list of cursors, it must attempt to handle the second, etc.">
+
+<style>
+div.test{
+ background: #D2B48C; border: 2px solid #555;
+ cursor: url("support/cursors/not-an-image.foo"), url("support/cursors/woolly-64.png"), url("support/cursors/woolly-64.ico"), help;
+ width: 128px; height: 128px;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the colored rectangle, the cursor looks like
+ a sheep.</p>
+ <p>If inside the rectangle the cursor does not change, or looks like a help cursor, the test fails.</p>
+ <div class="test"> </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-018.html b/testing/web-platform/tests/css/css-ui/cursor-image-018.html
new file mode 100644
index 0000000000..31caf408e0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-018.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, fallback keyword</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact image">
+<meta charset="UTF-8">
+<meta name="assert" content="If the user agent cannot handle any user-defined cursor, it must use the cursor keyword at the end of the list.">
+
+<style>
+div.test{
+ background: #D2B48C; border: 2px solid #555;
+ cursor: url("support/cursors/not-an-image.foo"), crosshair;
+ width: 128px; height: 128px;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the colored rectangle, the cursor looks like
+ a crosshair (i.e. short line segments resembling a "+" sign).</p>
+ <p>If inside the rectangle the cursor does not change, the test fails.</p>
+ <div class="test"> </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-001.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-001.html
new file mode 100644
index 0000000000..0a99ad2c3b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-001.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact image">
+<meta charset="UTF-8">
+<meta name="assert" content="Test checks that a monochrome (type 0) PNG image, 1 bit/pixel, is supported as a CSS custom cursor.">
+<style>
+ div.test{background: #AAA; border: 2px solid #555;
+ cursor:url(support/PTS/basn0g01.png), help; width: 128px; height: 64px}
+ div.test:before {content: url(support/PTS/basn0g01.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the grey rectangle, the cursor looks like the reference image.</p>
+ <div class="test"> </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-002.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-002.html
new file mode 100644
index 0000000000..bb48743f9c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-002.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that a black and white PNG image cursor is supported.">
+<style>
+ .test{background: #AAA; border: 2px solid #555;
+ cursor:url(support/PTS/basn0g02.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basn0g02.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the grey rectangle, the cursor looks like the reference image.</p>
+ <p class="test"> </p>
+ <p>Local monochrome (type 0) PNG image, 2 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-003.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-003.html
new file mode 100644
index 0000000000..fbe96fc063
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-003.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that a black and white PNG image cursor is supported.">
+<style>
+ .test{background: #AAA; border: 2px solid #555;
+ cursor:url(support/PTS/basn0g04.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basn0g04.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the grey rectangle, the cursor looks like the reference image.</p>
+ <p class="test"> </p>
+ <p>Local monochrome (type 0) PNG image, 4 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-004.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-004.html
new file mode 100644
index 0000000000..ea790d1a4d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-004.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that a black and white PNG image cursor is supported.">
+<style>
+ .test{background: #AAA; border: 2px solid #555;
+ cursor:url(support/PTS/basn0g08.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basn0g08.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the grey rectangle, the cursor looks like the reference image.</p>
+ <p class="test"> </p>
+ <p>Local monochrome (type 0) PNG image, 8 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-005.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-005.html
new file mode 100644
index 0000000000..26842871c2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-005.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that a black and white PNG image cursor is supported.">
+<style>
+ .test{background: #AAA; border: 2px solid #555;
+ cursor:url(support/PTS/basn0g16.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basn0g16.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the grey rectangle, the cursor looks like the reference image.</p>
+ <p class="test"> </p>
+ <p>Local monochrome (type 0) PNG image, 16 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-006.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-006.html
new file mode 100644
index 0000000000..bc6453d6c3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-006.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an RGB PNG image cursor is supported.">
+<style>
+ .test{background: #AAA; border: 2px solid #555;
+ cursor:url(support/PTS/basn2c08.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basn2c08.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the grey rectangle, the cursor looks like the reference image.</p>
+ <p class="test"> </p>
+ <p>Local RGB (type 2) PNG image, 8 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-007.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-007.html
new file mode 100644
index 0000000000..93d0ba6233
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-007.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an RGB PNG image cursor is supported.">
+<style>
+ .test{background: #AAA; border: 2px solid #555;
+ cursor:url(support/PTS/basn2c16.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basn2c16.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the grey rectangle, the cursor looks like the reference image.</p>
+ <p class="test"> </p>
+ <p>Local RGB (type 2) PNG image, 16 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-008.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-008.html
new file mode 100644
index 0000000000..d9c2962818
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-008.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an indexed PNG image cursor is supported.">
+<style>
+ .test{background: #AAA; border: 2px solid #555;
+ cursor:url(support/PTS/basn3p01.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basn3p01.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the grey rectangle, the cursor looks like the reference image.</p>
+ <p class="test"> </p>
+ <p>Local indexed (type 3) PNG image, 1 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-009.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-009.html
new file mode 100644
index 0000000000..b942a7a4b5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-009.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an indexed PNG image cursor is supported.">
+<style>
+ .test{background: #AAA; border: 2px solid #555;
+ cursor:url(support/PTS/basn3p02.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basn3p02.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the grey rectangle, the cursor looks like the reference image.</p>
+ <p class="test"> </p>
+ <p>Local indexed (type 3) PNG image, 2 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-010.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-010.html
new file mode 100644
index 0000000000..3a65c1d5f0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-010.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an indexed PNG image cursor is supported.">
+<style>
+ .test{background: #AAA; border: 2px solid #555;
+ cursor:url(support/PTS/basn3p04.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basn3p04.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the grey rectangle, the cursor looks like the reference image.</p>
+ <p class="test"> </p>
+ <p>Local indexed (type 3) PNG image, 4 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-011.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-011.html
new file mode 100644
index 0000000000..9ad4b0101a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-011.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an indexed PNG image cursor is supported.">
+<style>
+ .test{background: #AAA; border: 2px solid #555;
+ cursor:url(support/PTS/basn3p08.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basn3p08.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the grey rectangle, the cursor looks like the reference image.</p>
+ <p class="test"> </p>
+ <p>Local indexed (type 3) PNG image, 8 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-012.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-012.html
new file mode 100644
index 0000000000..437928699f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-012.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that a greyscale with alpha PNG image cursor is supported.">
+<style>
+ .test{background: #ffe5b4; border: 2px solid #555;
+ cursor:url(support/PTS/basn4a08.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basn4a08.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the peach rectangle, the cursor looks like the reference image.</p>
+ <!-- changed background colour so grey semitransparent image can be seen -->
+ <p class="test"> </p>
+ <p>Local greyscale with alpha (type 4) PNG image, 8 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-013.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-013.html
new file mode 100644
index 0000000000..75651f133e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-013.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that a greyscale with alpha PNG image cursor is supported.">
+<style>
+ .test{background: #ffe5b4; border: 2px solid #555;
+ cursor:url(support/PTS/basn4a16.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basn4a16.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the peach rectangle, the cursor looks like the reference image.</p>
+ <!-- changed background colour so grey semitransparent image can be seen -->
+ <p class="test"> </p>
+ <p>Local greyscale with alpha (type 4) PNG image, 16 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-014.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-014.html
new file mode 100644
index 0000000000..00c1dc7edc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-014.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an RGB with alpha PNG image cursor is supported.">
+<style>
+ .test{background: #AAA; border: 2px solid #555;
+ cursor:url(support/PTS/basn6a08.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basn6a08.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the grey rectangle, the cursor looks like the reference image.</p>
+
+ <p class="test"> </p>
+ <p>Local RGB with alpha (type 6) PNG image, 8 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-015.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-015.html
new file mode 100644
index 0000000000..6109234178
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-015.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an RGB with alpha PNG image cursor is supported.">
+<style>
+ .test{background: #AAA; border: 2px solid #555;
+ cursor:url(support/PTS/basn6a16.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basn6a16.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the grey rectangle, the cursor looks like the reference image.</p>
+
+ <p class="test"> </p>
+ <p>Local RGB with alpha (type 6) PNG image, 16 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-016.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-016.html
new file mode 100644
index 0000000000..3d7ad76b25
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-016.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an interlaced black and white PNG image cursor is supported.">
+<style>
+ .test{background: #AAA; border: 2px solid #555;
+ cursor:url(support/PTS/basi0g01.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basi0g01.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the grey rectangle, the cursor looks like the reference image.</p>
+ <p class="test"> </p>
+ <p>Local interlaced monochrome (type 0) PNG image, 1 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-017.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-017.html
new file mode 100644
index 0000000000..03b6d6f414
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-017.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an interlaced black and white PNG image cursor is supported.">
+<style>
+ .test{background: #AAA; border: 2px solid #555;
+ cursor:url(support/PTS/basi0g02.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basi0g02.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the grey rectangle, the cursor looks like the reference image.</p>
+ <p class="test"> </p>
+ <p>Local interlaced monochrome (type 0) PNG image, 2 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-018.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-018.html
new file mode 100644
index 0000000000..b7190aadfa
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-018.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an interlaced black and white PNG image cursor is supported.">
+<style>
+ .test{background: #AAA; border: 2px solid #555;
+ cursor:url(support/PTS/basi0g04.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basi0g04.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the grey rectangle, the cursor looks like the reference image.</p>
+ <p class="test"> </p>
+ <p>Local interlaced monochrome (type 0) PNG image, 4 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-019.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-019.html
new file mode 100644
index 0000000000..86a33f7e1d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-019.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an interlaced black and white PNG image cursor is supported.">
+<style>
+ .test{background: #AAA; border: 2px solid #555;
+ cursor:url(support/PTS/basi0g08.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basi0g08.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the grey rectangle, the cursor looks like the reference image.</p>
+ <p class="test"> </p>
+ <p>Local interlaced monochrome (type 0) PNG image, 8 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-020.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-020.html
new file mode 100644
index 0000000000..3c51ed96e2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-020.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an interlaced black and white PNG image cursor is supported.">
+<style>
+ .test{background: #AAA; border: 2px solid #555;
+ cursor:url(support/PTS/basi0g16.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basi0g16.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the grey rectangle, the cursor looks like the reference image.</p>
+ <p class="test"> </p>
+ <p>Local interlaced monochrome (type 0) PNG image, 16 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-021.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-021.html
new file mode 100644
index 0000000000..ea66fd7da3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-021.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an interlaced RGB PNG image cursor is supported.">
+<style>
+ .test{background: #AAA; border: 2px solid #555;
+ cursor:url(support/PTS/basi2c08.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basi2c08.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the grey rectangle, the cursor looks like the reference image.</p>
+ <p class="test"> </p>
+ <p>Local interlaced RGB (type 2) PNG image, 8 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-022.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-022.html
new file mode 100644
index 0000000000..b4767ac2cb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-022.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an interlaced RGB PNG image cursor is supported.">
+<style>
+ .test{background: #AAA; border: 2px solid #555;
+ cursor:url(support/PTS/basi2c16.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basi2c16.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the grey rectangle, the cursor looks like the reference image.</p>
+ <p class="test"> </p>
+ <p>Local interlaced RGB (type 2) PNG image, 16 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-023.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-023.html
new file mode 100644
index 0000000000..397244e45e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-023.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an interlaced, indexed PNG image cursor is supported.">
+<style>
+ .test{background: #AAA; border: 2px solid #555;
+ cursor:url(support/PTS/basi3p01.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basi3p01.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the grey rectangle, the cursor looks like the reference image.</p>
+ <p class="test"> </p>
+ <p>Local interlaced, indexed (type 3) PNG image, 1 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-024.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-024.html
new file mode 100644
index 0000000000..986cd8c455
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-024.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an interlaced, indexed PNG image cursor is supported.">
+<style>
+ .test{background: #AAA; border: 2px solid #555;
+ cursor:url(support/PTS/basi3p02.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basi3p02.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the grey rectangle, the cursor looks like the reference image.</p>
+ <p class="test"> </p>
+ <p>Local interlaced, indexed (type 3) PNG image, 2 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-025.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-025.html
new file mode 100644
index 0000000000..b584da62e1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-025.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an interlaced, indexed PNG image cursor is supported.">
+<style>
+ .test{background: #AAA; border: 2px solid #555;
+ cursor:url(support/PTS/basi3p04.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basi3p04.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the grey rectangle, the cursor looks like the reference image.</p>
+ <p class="test"> </p>
+ <p>Local interlaced, indexed (type 3) PNG image, 4 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-026.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-026.html
new file mode 100644
index 0000000000..e9b68de4d8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-026.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an interlaced, indexed PNG image cursor is supported.">
+<style>
+ .test{background: #AAA; border: 2px solid #555;
+ cursor:url(support/PTS/basi3p08.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basi3p08.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the grey rectangle, the cursor looks like the reference image.</p>
+ <p class="test"> </p>
+ <p>Local interlaced, indexed (type 3) PNG image, 8 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-027.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-027.html
new file mode 100644
index 0000000000..febbad5316
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-027.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an interlaced greyscale with alpha PNG image cursor is supported.">
+<style>
+ .test{background: #ffe5b4; border: 2px solid #555;
+ cursor:url(support/PTS/basi4a08.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basi4a08.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the peach rectangle, the cursor looks like the reference image.</p>
+ <!-- changed background colour so grey semitransparent image can be seen -->
+ <p class="test"> </p>
+ <p>Local interlaced greyscale with alpha (type 4) PNG image, 8 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-028.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-028.html
new file mode 100644
index 0000000000..e572419dd3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-028.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an interlaced greyscale with alpha PNG image cursor is supported.">
+<style>
+ .test{background: #ffe5b4; border: 2px solid #555;
+ cursor:url(support/PTS/basi4a16.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basi4a16.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the peach rectangle, the cursor looks like the reference image.</p>
+ <!-- changed background colour so grey semitransparent image can be seen -->
+ <p class="test"> </p>
+ <p>Local interlaced greyscale with alpha (type 4) PNG image, 16 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-029.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-029.html
new file mode 100644
index 0000000000..9da6d4a537
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-029.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an interlaced RGB with alpha PNG image cursor is supported.">
+<style>
+ .test{background: #AAA; border: 2px solid #555;
+ cursor:url(support/PTS/basi6a08.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basi6a08.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the grey rectangle, the cursor looks like the reference image.</p>
+
+ <p class="test"> </p>
+ <p>Local interlaced RGB with alpha (type 6) PNG image, 8 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-030.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-030.html
new file mode 100644
index 0000000000..b35871390d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-030.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an interlaced RGB with alpha PNG image cursor is supported.">
+<style>
+ .test{background: #AAA; border: 2px solid #555;
+ cursor:url(support/PTS/basi6a16.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/basi6a16.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the grey rectangle, the cursor looks like the reference image.</p>
+
+ <p class="test"> </p>
+ <p>Local interlaced RGB with alpha (type 6) PNG image, 16 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-031.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-031.html
new file mode 100644
index 0000000000..3a95eaa87e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-031.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that a greyscale PNG image cursor with transparency is supported.">
+<style>
+ .test{background: #ffe5b4; border: 2px solid #555;
+ cursor:url(support/PTS/tbbn0g04.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/tbbn0g04.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the peach rectangle, the cursor looks like the reference image.</p>
+
+ <p class="test"> </p>
+ <p>Greyscale PNG image, with transparency (tRNS), 4 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-032.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-032.html
new file mode 100644
index 0000000000..8ae0f52d69
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-032.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that a greyscale PNG image cursor with transparency is supported.">
+<style>
+ .test{background: #ffe5b4; border: 2px solid #555;
+ cursor:url(support/PTS/tbwn0g16.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/tbwn0g16.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the peach rectangle, the cursor looks like the reference image.</p>
+
+ <p class="test"> </p>
+ <p>Greyscale PNG image, with transparency (tRNS), 16 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-033.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-033.html
new file mode 100644
index 0000000000..9331a90d91
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-033.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an RGB PNG image cursor with transparency is supported.">
+<style>
+ .test{background: #ffe5b4; border: 2px solid #555;
+ cursor:url(support/PTS/tbrn2c08.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/tbrn2c08.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the peach rectangle, the cursor looks like the reference image.</p>
+
+ <p class="test"> </p>
+ <p>RGB PNG image, with transparency (tRNS), 8 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-034.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-034.html
new file mode 100644
index 0000000000..9331a90d91
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-034.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an RGB PNG image cursor with transparency is supported.">
+<style>
+ .test{background: #ffe5b4; border: 2px solid #555;
+ cursor:url(support/PTS/tbrn2c08.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/tbrn2c08.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the peach rectangle, the cursor looks like the reference image.</p>
+
+ <p class="test"> </p>
+ <p>RGB PNG image, with transparency (tRNS), 8 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-035.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-035.html
new file mode 100644
index 0000000000..1bcffe82b5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-035.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an RGB PNG image cursor with transparency is supported.">
+<style>
+ .test{background: #ffe5b4; border: 2px solid #555;
+ cursor:url(support/PTS/tbbn2c16.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/tbbn2c16.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the peach rectangle, the cursor looks like the reference image.</p>
+
+ <p class="test"> </p>
+ <p>RGB PNG image, with transparency (tRNS), 16 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-036.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-036.html
new file mode 100644
index 0000000000..4dabbe3c33
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-036.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an indexed PNG image cursor with transparency is supported.">
+<style>
+ .test{background: #ffe5b4; border: 2px solid #555;
+ cursor:url(support/PTS/tbgn3p08.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/tbgn3p08.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the peach rectangle, the cursor looks like the reference image.</p>
+
+ <p class="test"> </p>
+ <p>indexed PNG image, with transparency (tRNS), 8 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-037.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-037.html
new file mode 100644
index 0000000000..dd74499201
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-037.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an indexed PNG image cursor with transparency is supported.">
+<style>
+ .test{background: #ffe5b4; border: 2px solid #555;
+ cursor:url(support/PTS/tm3n3p02.png), help; width :128px; height: 64px}
+ .test:before {content: url(support/PTS/tm3n3p02.png)
+</style>
+<body>
+ <p>The test passes if, when moved inside the peach rectangle, the cursor looks like the reference image.</p>
+
+ <p class="test"> </p>
+ <p>indexed PNG image, with multiple levels of transparency (tRNS), 8 bit/pixel.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-038.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-038.html
new file mode 100644
index 0000000000..6c7ac7fd07
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-038.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that gamma correction on PNG image cursor is correct.">
+<style>
+ .test{background: #ffe5b4; border: 2px solid #555;
+ cursor:url(support/PTS/g04n0g16.png), help; width :128px; height: 224px; font-size: 32px; line-height:32px}
+
+</style>
+<body>
+ <p>The test passes if all the reference images look the same, AND when moved inside the peach rectangle, the cursor looks like the reference images (ignoring the small numeric values in each image).</p>
+
+ <p class="test">
+ <img src="support/PTS/g03n0g16.png"><br />
+ <img src="support/PTS/g04n0g16.png"><br />
+ <img src="support/PTS/g05n0g16.png"><br />
+ <img src="support/PTS/g07n0g16.png"><br />
+ <img src="support/PTS/g10n0g16.png"><br />
+ <img src="support/PTS/g25n0g16.png"><br /> </p>
+ <p>Greyscale PNG images with various gamma values, 16 bit/pixel. Pixel values adjusted so that, when gamma corrected, the images look the same.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-039.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-039.html
new file mode 100644
index 0000000000..fd52b6b013
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-039.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that gamma correction on PNG image cursor is correct.">
+<style>
+ .test{background: #ffe5b4; border: 2px solid #555;
+ cursor:url(support/PTS/g04n2c08.png), help; width :128px; height: 224px; font-size: 32px; line-height:32px}
+
+</style>
+<body>
+ <p>The test passes if all the reference images look the same, AND when moved inside the peach rectangle, the cursor looks like the reference images (ignoring the small numeric values in each image).</p>
+
+ <p class="test">
+ <img src="support/PTS/g03n2c08.png"><br />
+ <img src="support/PTS/g04n2c08.png"><br />
+ <img src="support/PTS/g05n2c08.png"><br />
+ <img src="support/PTS/g07n2c08.png"><br />
+ <img src="support/PTS/g10n2c08.png"><br />
+ <img src="support/PTS/g25n2c08.png"><br /> </p>
+ <p>RGB PNG images with various gamma values, 8 bit/pixel. Pixel values adjusted so that, when gamma corrected, the images look the same.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-040.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-040.html
new file mode 100644
index 0000000000..49473b3105
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-040.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that gamma correction on PNG image cursor is correct.">
+<style>
+ .test{background: #ffe5b4; border: 2px solid #555;
+ cursor:url(support/PTS/g04n3p04.png), help; width :128px; height: 224px; font-size: 32px; line-height:32px}
+
+</style>
+<body>
+ <p>The test passes if all the reference images look the same, AND when moved inside the peach rectangle, the cursor looks like the reference images (ignoring the small numeric values in each image).</p>
+
+ <p class="test">
+ <img src="support/PTS/g03n3p04.png"><br />
+ <img src="support/PTS/g04n3p04.png"><br />
+ <img src="support/PTS/g05n3p04.png"><br />
+ <img src="support/PTS/g07n3p04.png"><br />
+ <img src="support/PTS/g10n3p04.png"><br />
+ <img src="support/PTS/g25n3p04.png"><br /> </p>
+ <p>Indexed PNG images with various gamma values, 4 bit/pixel. Pixel values adjusted so that, when gamma corrected, the images look the same.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-041.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-041.html
new file mode 100644
index 0000000000..d817844d06
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-041.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks invalid PNG image cursor skipped, fallback used.">
+<style>
+ .test{background: #ffe5b4; border: 2px solid #555;
+ cursor:url(support/PTS/xs2n0g01.png), help; width :128px; height: 64px}
+</style>
+<body>
+ <p>The test passes if, when moved inside the peach rectangle, a help cursor is shown.</p>
+
+ <p class="test"> </p>
+ <p>Invalid PNG image, signature bytes incorrect. Help cursor fallback.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-042.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-042.html
new file mode 100644
index 0000000000..e88ed4e23c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-042.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks invalid PNG image cursor skipped, fallback used.">
+<style>
+ .test{background: #ffe5b4; border: 2px solid #555;
+ cursor:url(support/PTS/xhdn0g08.png), help; width :128px; height: 64px}
+</style>
+<body>
+ <p>The test passes if, when moved inside the peach rectangle, a help cursor is shown.</p>
+
+ <p class="test"> </p>
+ <p>Invalid PNG image, incorrect header checksum. Help cursor fallback.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-image-png-043.html b/testing/web-platform/tests/css/css-ui/cursor-image-png-043.html
new file mode 100644
index 0000000000..0ab16a1fc6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-image-png-043.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Cursor property, PNG</title>
+<link rel="author" title="Chris Lilley" href="mailto:chris@w3.org">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks invalid PNG image cursor skipped, fallback used.">
+<style>
+ .test{background: #ffe5b4; border: 2px solid #555;
+ cursor:url(support/PTS/xdtn0g01.png), help; width :128px; height: 64px}
+</style>
+<body>
+ <p>The test passes if, when moved inside the peach rectangle, a help cursor is shown.</p>
+
+ <p class="test"> </p>
+ <p>Invalid PNG image, missing IDAT chunk. Help cursor fallback.
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-outline-area.html b/testing/web-platform/tests/css/css-ui/cursor-outline-area.html
new file mode 100644
index 0000000000..d53ecdc401
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-outline-area.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor on outline</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor" title="6.1.1. cursor property">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The cursor property is not applied over outline.">
+<style>
+div {
+ margin-top: 66px;
+ margin-left: 50px;
+ outline: blue solid 50px;
+ cursor: url("support/cursors/fail.png"), url("support/cursors/fail.cur"), help;
+ width: 0px;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue square, the cursor is the platform-dependent default cursor. Often rendered as an arrow.</p>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-padding-area.html b/testing/web-platform/tests/css/css-ui/cursor-padding-area.html
new file mode 100644
index 0000000000..aaa993024c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-padding-area.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor on the padding area</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact">
+<meta charset="UTF-8">
+<meta name="assert" content="The cursor property is applied over the padding area, as it is strictly inside the border edge.">
+<style>
+div {
+ background: blue;
+ padding: 50px;
+ cursor: crosshair;
+}
+</style>
+<body>
+ <p>The test passes if, when moved inside the blue rectangle, the cursor looks like a crosshair (e.g. short line segments resembling a "+" sign).</p>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-pointer-links-001-manual.html b/testing/web-platform/tests/css/css-ui/cursor-pointer-links-001-manual.html
new file mode 100644
index 0000000000..4d4be0d303
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-pointer-links-001-manual.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html lang="en">
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: pointer cursor on svg links</title>
+<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="The pointer cursor is applied to SVG links">
+<style>
+</style>
+<body>
+ <p>The test passes if, when moved over the blue text, the cursor indicates a link. Often rendered as the backside of a hand with the index finger poiting and the other fingers closed.</p>
+ <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+ <a xlink:href=""><text x="0" y="16" font-size="16" fill="blue">Hover me</text></a>
+ </svg>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-pointer-links-002-manual.html b/testing/web-platform/tests/css/css-ui/cursor-pointer-links-002-manual.html
new file mode 100644
index 0000000000..fc9c2a3d63
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-pointer-links-002-manual.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html lang="en">
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: pointer cursor on svg links</title>
+<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="The pointer cursor is applied to HTML links">
+<style>
+</style>
+<body>
+ <p>The test passes if, when moved over the blue text, the cursor indicates a link. Often rendered as the backside of a hand with the index finger poiting and the other fingers closed.</p>
+ <a href="" style="color: blue">Hover me</a>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-pointer-links-003-manual.html b/testing/web-platform/tests/css/css-ui/cursor-pointer-links-003-manual.html
new file mode 100644
index 0000000000..ceaa174847
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-pointer-links-003-manual.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html lang="en">
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: pointer cursor on svg links</title>
+<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#cursor">
+<meta name="flags" content="interact">
+<meta name="assert" content="The pointer cursor is applied to HTML image maps">
+<style>
+</style>
+<body>
+ <p>The test passes if, when moved over the blue box, the cursor indicates a link. Often rendered as the backside of a hand with the index finger poiting and the other fingers closed.</p>
+ <map name="m1"><area coords="0,0,100,100" href=""></map>
+ <img usemap="#m1" src="../support/swatch-blue.png" alt="blue square" width=100 height=100>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-text-001.html b/testing/web-platform/tests/css/css-ui/cursor-text-001.html
new file mode 100644
index 0000000000..d894c65b9d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-text-001.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor:text with vertical text</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<link rel="help" href="http://www.w3.org/TR/css-writing-modes-3/#writing-mode">
+<meta name="flags" content="interact may">
+<meta charset="UTF-8">
+<meta name="assert" content="User agents may automatically display a horizontal I-beam/cursor (e.g. same as the vertical-text keyword) for vertical text.">
+<style>
+div {
+ cursor: text;
+ color: blue;
+ writing-mode: vertical-rl;
+}
+p {
+ cursor: text;
+}
+</style>
+<body>
+ <p>The test passes if, when moved over the blue vertical text, the cursor indicates vertical-text that may be selected,
+ and looks different from the cursor used to indicate that horizontal text may be selected,
+ such as when placed over this sentence.
+ Often rendered as a horizontal I-beam.</p>
+ <p>Disregard this test if there is no vertical text.</p>
+ <div>Lorem ipsum</div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-text-002.html b/testing/web-platform/tests/css/css-ui/cursor-text-002.html
new file mode 100644
index 0000000000..3aec77f4d9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-text-002.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: cursor:text with rotated text</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<link rel="help" href="http://www.w3.org/TR/css3-transforms/#two-d-transform-functions">
+<meta name="flags" content="interact may">
+<meta charset="UTF-8">
+<meta name="assert" content="User agents may automatically display any angle of I-beam/cursor for text that is rendered at any particular angle">
+<style>
+div {
+ cursor: text;
+ color: blue;
+ transform: rotate(45deg);
+ transform-origin: bottom left;
+}
+p {
+ cursor: text;
+}
+</style>
+<body>
+ <p>The test passes if, when moved over the blue rotated text, the cursor that indicates text that may be selected is rotated to match the angle of the text.</p>
+ <p>Disregard this test if there is no rotated text.</p>
+ <div>Lorem ipsum</div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-x-y-001.html b/testing/web-platform/tests/css/css-ui/cursor-x-y-001.html
new file mode 100644
index 0000000000..16b147cc2d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-x-y-001.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html onclick="fail()">
+<title>CSS Basic User Interface Test: cursor hotspot coordinates</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact dom">
+<meta charset="UTF-8">
+<meta name="assert" content="The coordnates of the cursor hotspot can be specified.">
+<style>
+body, html {
+ cursor: url("support/cursors/arrows.png") 31 31, url("support/cursors/arrows.ico") 31 31, help;
+}
+div {
+ margin: 30px;
+ width: 15px;
+ height: 15px;
+ background: green;
+}
+#fail, #pass { display: none }
+</style>
+
+<p>If you are on a device without a cursor, skip this test.
+<p>Otherwise, if the cursor does not look like a red and a green arrow, the test has failed.
+<p>Place the cursor so that the tip of the <strong>green arrow</strong> is on the <strong>green box</strong>, then click.
+<p>If nothing happens when you click, the test has failed.
+<div onclick="pass(event)"></div>
+<p id=fail>The test has failed.
+<p id=pass>The test passes.
+
+<script>
+function pass(e) {
+ document.getElementById("pass").style.display="block";
+ e.stopPropagation();
+}
+function fail() {
+ document.getElementById("fail").style.display="block";
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-x-y-002.html b/testing/web-platform/tests/css/css-ui/cursor-x-y-002.html
new file mode 100644
index 0000000000..6aae01eaed
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-x-y-002.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html onclick="fail()">
+<title>CSS Basic User Interface Test: cursor hotspot coordinates clamping</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact dom">
+<meta charset="UTF-8">
+<meta name="assert" content="The coordinates of the hotspot must be clamped if they fall outside of the range of the image.">
+<style>
+body, html {
+ cursor: url("support/cursors/arrows.png") 100 100, url("support/cursors/arrows.ico") 100 100, help;
+}
+div {
+ margin: 30px;
+ width: 15px;
+ height: 15px;
+ background: green;
+}
+#fail, #pass { display: none; }
+</style>
+
+<p>If you are on a device without a cursor, skip this test.
+<p>Otherwise, if the cursor does not look like a red and a green arrow, the test has failed.
+<p>Place the cursor so that the tip of the <strong>green arrow</strong> is on the <strong>green box</strong>, then click.
+<p>If nothing happens when you click, the test has failed.
+<div onclick="pass(event)"></div>
+<p id=fail>The test has failed.
+<p id=pass>The test passes.
+
+<script>
+function pass(e) {
+ document.getElementById("pass").style.display="block";
+ e.stopPropagation();
+}
+function fail() {
+ document.getElementById("fail").style.display="block";
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/cursor-x-y-003.html b/testing/web-platform/tests/css/css-ui/cursor-x-y-003.html
new file mode 100644
index 0000000000..cb3b7ae9df
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/cursor-x-y-003.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html onclick="fail()">
+<title>CSS Basic User Interface Test: cursor hotspot coordinates clamping</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#cursor">
+<meta name="flags" content="interact dom">
+<meta charset="UTF-8">
+<meta name="assert" content="The coordinates of the hotspot must be clamped if they fall outside of the range of the image, including negative numbers.">
+<style>
+body, html {
+ cursor: url("support/cursors/arrows.png") -100 -100, url("support/cursors/arrows.ico") -100 -100, help;
+}
+div {
+ margin: 30px;
+ width: 15px;
+ height: 15px;
+ background: green;
+}
+#fail, #pass { display: none; }
+</style>
+
+<p>If you are on a device without a cursor, skip this test.
+<p>Otherwise, if the cursor does not look like a red and a green arrow, the test has failed.
+<p>Place the cursor so that the tip of the <strong>red arrow</strong> is on the <strong>green box</strong>, then click.
+<p>If nothing happens when you click, the test has failed.
+<div onclick="pass(event)"></div>
+<p id=fail>The test has failed.
+<p id=pass>The test passes.
+
+<script>
+function pass(e) {
+ document.getElementById("pass").style.display="block";
+ e.stopPropagation();
+}
+function fail() {
+ document.getElementById("fail").style.display="block";
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/historical/moz-user-modify-01.html b/testing/web-platform/tests/css/css-ui/historical/moz-user-modify-01.html
new file mode 100644
index 0000000000..595df9440e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/historical/moz-user-modify-01.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>-moz-user-modify should be unsupported in author origin</title>
+<link rel="help" href="https://developer.mozilla.org/en-US/docs/Web/CSS/user-modify">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+#modified {
+ -moz-user-modify: read-write;
+}
+</style>
+<div id="inherited"></div>
+<div id="modified"></div>
+<script>
+ test(function() {
+ for (const el of [inherited, modified]) {
+ assert_equals(el.style.MozUserModify, undefined);
+ assert_equals(el.style.mozUserModify, undefined);
+ assert_equals(getComputedStyle(el).getPropertyValue('-moz-user-modify'), '');
+ }
+ }, '-moz-user-modify is not supported');
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/historical/moz-user-modify-02.html b/testing/web-platform/tests/css/css-ui/historical/moz-user-modify-02.html
new file mode 100644
index 0000000000..e284d0c475
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/historical/moz-user-modify-02.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>-moz-user-modify should be unsupported in contenteditable</title>
+<link rel="help" href="https://developer.mozilla.org/en-US/docs/Web/CSS/user-modify">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="contentEditableTrue" contenteditable="true"></div>
+<div id="contentEditablePlainText" contenteditable="plaintext-only"></div>
+<script>
+ test(function() {
+ const contentEditableTrue = document.getElementById('contentEditableTrue');
+ assert_equals(getComputedStyle(contentEditableTrue).getPropertyValue('-moz-user-modify'), '');
+ }, 'contenteditable="true" doesn\'t use unsupported -moz-user-modify property');
+
+ test(function() {
+ const contentEditablePlainText = document.getElementById('contentEditablePlainText');
+ assert_equals(getComputedStyle(contentEditablePlainText).getPropertyValue('-moz-user-modify'), '');
+ }, 'contenteditable="plaintext-only" doesn\'t use unsupported -moz-user-modify property');
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/historical/moz-user-modify-03.html b/testing/web-platform/tests/css/css-ui/historical/moz-user-modify-03.html
new file mode 100644
index 0000000000..e827b404e9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/historical/moz-user-modify-03.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>-moz-user-modify should be unsupported in CSS.supports</title>
+<link rel="help" href="https://developer.mozilla.org/en-US/docs/Web/CSS/user-modify">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+@supports (-moz-user-modify: read-only) {
+ #content {
+ width: 10px;
+ height: 10px;
+ background-color: red;
+ }
+}
+</style>
+<div id="content"></div>
+<script>
+ test(function() {
+ const content = document.getElementById('content');
+ assert_not_equals(getComputedStyle(content).getPropertyValue('background-color'), 'rgb(255, 0, 0)');
+ }, '@supports doesn\'t use unsupported -moz-user-modify property');
+
+ test(function() {
+ const supportsMozUserModifyProperty = CSS.supports(`(-moz-user-modify: read-only) or
+ (-moz-user-modify: read-write) or
+ (-moz-user-modify: write-only)`);
+ assert_equals(supportsMozUserModifyProperty, false);
+ }, 'CSS.supports doesn\'t use unsupported -moz-user-modify property');
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/historical/user-modify-01.html b/testing/web-platform/tests/css/css-ui/historical/user-modify-01.html
new file mode 100644
index 0000000000..dee93a618f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/historical/user-modify-01.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>user-modify should be unsupported in author origin</title>
+<link rel="help" href="https://developer.mozilla.org/en-US/docs/Web/CSS/user-modify">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+#modified {
+ user-modify: read-write;
+}
+</style>
+<div id="inherited"></div>
+<div id="modified"></div>
+<script>
+ test(function() {
+ for (const el of [inherited, modified]) {
+ assert_equals(el.style.userModify, undefined);
+ assert_equals(el.style.UserModify, undefined);
+ assert_equals(getComputedStyle(el).getPropertyValue('user-modify'), '');
+ }
+ }, 'user-modify is not supported');
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/historical/user-modify-02.html b/testing/web-platform/tests/css/css-ui/historical/user-modify-02.html
new file mode 100644
index 0000000000..2a96871d90
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/historical/user-modify-02.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>user-modify should be unsupported in contenteditable</title>
+<link rel="help" href="https://developer.mozilla.org/en-US/docs/Web/CSS/user-modify">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="contentEditableTrue" contenteditable="true"></div>
+<div id="contentEditablePlainText" contenteditable="plaintext-only"></div>
+<script>
+ test(function() {
+ const contentEditableTrue = document.getElementById('contentEditableTrue');
+ assert_equals(getComputedStyle(contentEditableTrue).getPropertyValue('user-modify'), '');
+ }, 'contenteditable="true" doesn\'t use unsupported user-modify property');
+
+ test(function() {
+ const contentEditablePlainText = document.getElementById('contentEditablePlainText');
+ assert_equals(getComputedStyle(contentEditablePlainText).getPropertyValue('user-modify'), '');
+ }, 'contenteditable="plaintext-only" doesn\'t use unsupported user-modify property');
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/historical/user-modify-03.html b/testing/web-platform/tests/css/css-ui/historical/user-modify-03.html
new file mode 100644
index 0000000000..8d47e5259f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/historical/user-modify-03.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>user-modify should be unsupported in CSS.supports</title>
+<link rel="help" href="https://developer.mozilla.org/en-US/docs/Web/CSS/user-modify">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+@supports (user-modify: read-only) {
+ #content {
+ width: 10px;
+ height: 10px;
+ background-color: red;
+ }
+}
+</style>
+<div id="content"></div>
+<script>
+ test(function() {
+ const content = document.getElementById('content');
+ assert_not_equals(getComputedStyle(content).getPropertyValue('background-color'), 'rgb(255, 0, 0)');
+ }, '@supports doesn\'t use unsupported user-modify property');
+
+ test(function() {
+ const supportsUserModifyProperty = CSS.supports(`(user-modify: read-only) or
+ (user-modify: read-write) or
+ (user-modify: write-only)`);
+ assert_equals(supportsUserModifyProperty, false);
+ }, 'CSS.supports doesn\'t use unsupported user-modify property');
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/historical/webkit-user-modify-01.html b/testing/web-platform/tests/css/css-ui/historical/webkit-user-modify-01.html
new file mode 100644
index 0000000000..f756274d47
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/historical/webkit-user-modify-01.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>-webkit-user-modify should be unsupported in author origin</title>
+<link rel="help" href="https://developer.mozilla.org/en-US/docs/Web/CSS/user-modify">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+#modified {
+ -webkit-user-modify: read-write-plaintext-only;
+}
+</style>
+<div id="inherited"></div>
+<div id="modified"></div>
+<script>
+ test(function() {
+ for (const el of [inherited, modified]) {
+ assert_equals(el.style.WebkitUserModify, undefined);
+ assert_equals(el.style.webkitUserModify, undefined);
+ assert_equals(getComputedStyle(el).getPropertyValue('-webkit-user-modify'), '');
+ }
+ }, '-webkit-user-modify is not supported');
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/historical/webkit-user-modify-02.html b/testing/web-platform/tests/css/css-ui/historical/webkit-user-modify-02.html
new file mode 100644
index 0000000000..9db2567467
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/historical/webkit-user-modify-02.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>-webkit-user-modify should be unsupported in contenteditable</title>
+<link rel="help" href="https://developer.mozilla.org/en-US/docs/Web/CSS/user-modify">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="contentEditableTrue" contenteditable="true"></div>
+<div id="contentEditablePlainText" contenteditable="plaintext-only"></div>
+<script>
+ test(function() {
+ const contentEditableTrue = document.getElementById('contentEditableTrue');
+ assert_equals(getComputedStyle(contentEditableTrue).getPropertyValue('-webkit-user-modify'), '');
+ }, 'contenteditable="true" doesn\'t use unsupported -webkit-user-modify property');
+
+ test(function() {
+ const contentEditablePlainText = document.getElementById('contentEditablePlainText');
+ assert_equals(getComputedStyle(contentEditablePlainText).getPropertyValue('-webkit-user-modify'), '');
+ }, 'contenteditable="plaintext-only" doesn\'t use unsupported -webkit-user-modify property');
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/historical/webkit-user-modify-03.html b/testing/web-platform/tests/css/css-ui/historical/webkit-user-modify-03.html
new file mode 100644
index 0000000000..e82ceffc37
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/historical/webkit-user-modify-03.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>-webkit-user-modify should be unsupported in CSS.supports</title>
+<link rel="help" href="https://developer.mozilla.org/en-US/docs/Web/CSS/user-modify">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+@supports (-webkit-user-modify: read-only) {
+ #content {
+ width: 10px;
+ height: 10px;
+ background-color: red;
+ }
+}
+</style>
+<div id="content"></div>
+<script>
+ test(function() {
+ const content = document.getElementById('content');
+ assert_not_equals(getComputedStyle(content).getPropertyValue('background-color'), 'rgb(255, 0, 0)');
+ }, '@supports doesn\'t use unsupported -webkit-user-modify property');
+
+ test(function() {
+ const supportsWebkitUserModifyProperty = CSS.supports(`(-webkit-user-modify: read-only) or
+ (-webkit-user-modify: read-write) or
+ (-webkit-user-modify: read-write-plaintext-only) or
+ (-webkit-user-modify: write-only)`);
+ assert_equals(supportsWebkitUserModifyProperty, false);
+ }, 'CSS.supports doesn\'t use unsupported -webkit-user-modify property');
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/inheritance.html b/testing/web-platform/tests/css/css-ui/inheritance.html
new file mode 100644
index 0000000000..c2aab07a23
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/inheritance.html
@@ -0,0 +1,55 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>Inheritance of CSS Basic User Interface properties</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui/#property-index">
+<meta name="assert" content="Properties inherit or not according to the spec.">
+<meta name="assert" content="Properties have initial values according to the spec.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/inheritance-testcommon.js"></script>
+</head>
+<body>
+<div id="reference"></div>
+<div id="container">
+ <div id="target"></div>
+</div>
+<style>
+#reference {
+ border-style: dotted; /* Avoid border-top-width computed style 0 */
+ border-top-width: medium;
+ color: lime;
+ background: blue;
+}
+
+#container, #target {
+ outline-style: dotted; /* Avoid outline-width computed style 0 */
+ color: lime;
+ background: blue;
+}
+</style>
+<script>
+const mediumWidth = getComputedStyle(reference).borderTopWidth; // e.g. 3px
+const currentColor = getComputedStyle(reference).color;
+
+assert_not_inherited('appearance', 'none', 'auto');
+assert_inherited('caret-color', currentColor, 'rgba(42, 53, 64, 0.75)');
+assert_inherited('caret-shape', 'auto', 'bar');
+assert_inherited('cursor', 'auto', 'pointer');
+assert_not_inherited('nav-down', 'auto', '#foo');
+assert_not_inherited('nav-left', 'auto', '#foo');
+assert_not_inherited('nav-right', 'auto', '#foo');
+assert_not_inherited('nav-up', 'auto', '#foo');
+if (CSS.supports('outline-color', 'invert'))
+ assert_not_inherited('outline-color', 'invert', 'rgba(42, 53, 64, 0.75)');
+else
+ assert_not_inherited('outline-color', currentColor, 'rgba(42, 53, 64, 0.75)');
+assert_not_inherited('outline-offset', '0px', '10px');
+assert_not_inherited('outline-style', 'none', 'auto');
+assert_not_inherited('outline-width', mediumWidth, '10px');
+assert_not_inherited('resize', 'none', 'vertical');
+assert_not_inherited('user-select', 'auto', 'none');
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/input-security-auto-sensitive-text-input-ref.html b/testing/web-platform/tests/css/css-ui/input-security-auto-sensitive-text-input-ref.html
new file mode 100644
index 0000000000..7eb15e32c2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/input-security-auto-sensitive-text-input-ref.html
@@ -0,0 +1,6 @@
+<!DOCTYPE html>
+<title>Test that input-security: auto obscures text in sensitive text inputs</title>
+<style>
+ input { input-security: auto; }
+</style>
+<input type="password" value="abcdefg">
diff --git a/testing/web-platform/tests/css/css-ui/input-security-auto-sensitive-text-input.html b/testing/web-platform/tests/css/css-ui/input-security-auto-sensitive-text-input.html
new file mode 100644
index 0000000000..3031094055
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/input-security-auto-sensitive-text-input.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<title>Test that input-security: auto obscures text in sensitive text inputs</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#input-security">
+<link rel="author" title="Apple Inc">
+<link rel="match" href="input-security-auto-sensitive-text-input-ref.html">
+<style>
+ input { input-security: auto; }
+</style>
+<input type="password" value="hunter2">
diff --git a/testing/web-platform/tests/css/css-ui/input-security-computed.html b/testing/web-platform/tests/css/css-ui/input-security-computed.html
new file mode 100644
index 0000000000..60a58f9418
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/input-security-computed.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<title>Test computed values for input-security</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#input-security">
+<link rel="author" title="Apple Inc">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+<style>
+ #outer { input-security: none; }
+</style>
+<div id="outer">
+ <div id="target"></div>
+</div>
+<div id="noInputSecurity"></div>
+<script>
+test_computed_value('input-security', 'initial', 'auto');
+test_computed_value('input-security', 'inherit', 'none');
+test_computed_value('input-security', 'auto', 'auto');
+test_computed_value('input-security', 'none', 'none');
+
+// When input-security isn't specified, it should return 'auto'
+assert_equals(getComputedStyle(noInputSecurity).inputSecurity, 'auto');
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/input-security-non-sensitive-elements-ref.html b/testing/web-platform/tests/css/css-ui/input-security-non-sensitive-elements-ref.html
new file mode 100644
index 0000000000..307257de10
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/input-security-non-sensitive-elements-ref.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<title>Test that input-security: auto does not obscure text in elements that do not accept sensitive text input</title>
+<style>
+ * { input-security: none; }
+</style>
+<input type="email" value="webkit@webkit.org">
+<input type="number" value="2021">
+<input type="search" value="test">
+<input type="tel" value="555-5555">
+<input type="text" value="test">
+<input type="url" value="webkit.org">
+<div>Test</div>
diff --git a/testing/web-platform/tests/css/css-ui/input-security-non-sensitive-elements.html b/testing/web-platform/tests/css/css-ui/input-security-non-sensitive-elements.html
new file mode 100644
index 0000000000..a3e1499bb2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/input-security-non-sensitive-elements.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>Test that input-security: auto does not obscure text in elements that do not accept sensitive text input</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#input-security">
+<link rel="author" title="Apple Inc">
+<link rel="match" href="input-security-non-sensitive-elements-ref.html">
+<style>
+ * { input-security: auto; }
+</style>
+<input type="email" value="webkit@webkit.org">
+<input type="number" value="2021">
+<input type="search" value="test">
+<input type="tel" value="555-5555">
+<input type="text" value="test">
+<input type="url" value="webkit.org">
+<div>Test</div>
diff --git a/testing/web-platform/tests/css/css-ui/input-security-none-sensitive-text-input-ref.html b/testing/web-platform/tests/css/css-ui/input-security-none-sensitive-text-input-ref.html
new file mode 100644
index 0000000000..d02c20cb3e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/input-security-none-sensitive-text-input-ref.html
@@ -0,0 +1,3 @@
+<!DOCTYPE html>
+<title>Test that input-security: none does not obscure text in sensitive text inputs</title>
+<input type="text" value="hunter2">
diff --git a/testing/web-platform/tests/css/css-ui/input-security-none-sensitive-text-input.html b/testing/web-platform/tests/css/css-ui/input-security-none-sensitive-text-input.html
new file mode 100644
index 0000000000..46af8fdc98
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/input-security-none-sensitive-text-input.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<title>Test that input-security: none does not obscure text in sensitive text inputs</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#input-security">
+<link rel="author" title="Apple Inc">
+<link rel="match" href="input-security-none-sensitive-text-input-ref.html">
+<style>
+ input { input-security: none; }
+</style>
+<input type="password" value="hunter2">
diff --git a/testing/web-platform/tests/css/css-ui/input-security-parsing.html b/testing/web-platform/tests/css/css-ui/input-security-parsing.html
new file mode 100644
index 0000000000..4de9619f82
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/input-security-parsing.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>Test parsing for input-security</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#input-security">
+<link rel="author" title="Apple Inc">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+<div id="target"></div>
+<script>
+test_valid_value('input-security', 'initial');
+test_valid_value('input-security', 'inherit');
+test_valid_value('input-security', 'unset');
+test_valid_value('input-security', 'revert');
+test_valid_value('input-security', 'auto');
+test_valid_value('input-security', 'none');
+
+test_invalid_value('input-security', 'auto auto');
+test_invalid_value('input-security', 'disc');
+test_invalid_value('input-security', 'circle');
+test_invalid_value('input-security', 'square');
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/nav-dir-001.html b/testing/web-platform/tests/css/css-ui/nav-dir-001.html
new file mode 100644
index 0000000000..98250a1d5c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-dir-001.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - property inheritance</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="reviewer" title="Leif Arne Storset" href="mailto:lstorset@opera.com">
+<link rel="reviewer" title="Rebecca Hauck" href="mailto:rhauck@adobe.com"><!-- 07-18-2013 -->
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'nav-left' property value is not inherited.">
+<style>
+ #parent {
+ nav-left: #finish;
+ }
+ #intermediate {
+ nav-left: #end;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating left twice moves the focus to the "FINISH" link.</p>
+
+ <div id="parent"><a href="">ignore</a> <a href="" id="intermediate">ignore</a> <a href="">START</a> <a href="" id="finish">ignore</a></div>
+
+ <div><a href="">ignore</a> <a href="" id="end">FINISH</a></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-dir-002.html b/testing/web-platform/tests/css/css-ui/nav-dir-002.html
new file mode 100644
index 0000000000..649dd55482
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-dir-002.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - 'inherit' property value</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="reviewer" title="Leif Arne Storset" href="mailto:lstorset@opera.com">
+<link rel="reviewer" title="Rebecca Hauck" href="mailto:rhauck@adobe.com"><!-- 07-18-2013 -->
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'inherit' value is respected.">
+<style>
+ #parent {
+ nav-left: #finish;
+ }
+ #start {
+ nav-left: inherit;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating left once moves the focus to the "FINISH" link.</p>
+
+ <div id="parent"><a href="">ignore</a> <a href="" id="start">START</a> <a href="" id="finish">FINISH</a></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-dir-003.html b/testing/web-platform/tests/css/css-ui/nav-dir-003.html
new file mode 100644
index 0000000000..af2290d8e2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-dir-003.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - input elements</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="reviewer" title="Leif Arne Storset" href="mailto:lstorset@opera.com">
+<link rel="reviewer" title="Rebecca Hauck" href="mailto:rhauck@adobe.com"><!-- 07-18-2013 -->
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that directional focus navigation properties work on input elements.">
+<style>
+ #start {
+ nav-left: #finish;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the text input containing "START" below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating left once moves the focus to the "FINISH" input.</p>
+
+ <div><input value="ignore"> <input value="START" id="start"> <input value="ignore"></div>
+
+ <div><input value="ignore"> <input value="ignore"> <input value="ignore"></div>
+
+ <div><input value="ignore"> <input value="FINISH" id="finish"> <input value="ignore"></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-dir-004.html b/testing/web-platform/tests/css/css-ui/nav-dir-004.html
new file mode 100644
index 0000000000..f6b5dbeea3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-dir-004.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - floating elements</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="reviewer" title="Leif Arne Storset" href="mailto:lstorset@opera.com">
+<link rel="reviewer" title="Rebecca Hauck" href="mailto:rhauck@adobe.com"><!-- 07-18-2013 -->
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that directional focus navigation properties work on floating elements.">
+<style>
+ #container > div {
+ clear: left;
+ }
+ #container > div > a {
+ float: left;
+ margin-right: 1ex;
+ }
+ #start {
+ nav-left: #finish;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating left once moves the focus to the "FINISH" input.</p>
+
+ <div id="container">
+ <div><a href="">ignore</a> <a href="" id="start">START</a> <a href="">ignore</a></div>
+
+ <div><a href="">ignore</a> <a href="">ignore</a> <a href="">ignore</a></div>
+
+ <div><a href="">ignore</a> <a href="" id="finish">FINISH</a> <a href="">ignore</a></div>
+ </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-dir-005.html b/testing/web-platform/tests/css/css-ui/nav-dir-005.html
new file mode 100644
index 0000000000..2f88a07327
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-dir-005.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - currently focused element</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="reviewer" title="Leif Arne Storset" href="mailto:lstorset@opera.com">
+<link rel="reviewer" title="Rebecca Hauck" href="mailto:rhauck@adobe.com"><!-- 07-18-2013 -->
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that focus doesn't change when navigating to the currently focused element.">
+<style>
+ #start {
+ nav-left: #start;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if the "START" element remains focused when navigating left.</p>
+
+ <div><a href="">ignore</a> <a href="" id="start">START</a> <a href="">ignore</a></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-dir-missing-1.html b/testing/web-platform/tests/css/css-ui/nav-dir-missing-1.html
new file mode 100644
index 0000000000..01c25276a6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-dir-missing-1.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - unkown element id</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an unknow element id used as the value of the 'nav-right' property value does not hinder normal spacial navigation.">
+<style>
+#start {
+ nav-right: #foo;
+}
+</style>
+</head>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating right moves the focus to the "FINISH" link.</p>
+
+ <a href="" id="start">START</a> <a href="" id="finish">FINISH</a>
+</body></html>
diff --git a/testing/web-platform/tests/css/css-ui/nav-dir-missing-2.html b/testing/web-platform/tests/css/css-ui/nav-dir-missing-2.html
new file mode 100644
index 0000000000..a231d43871
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-dir-missing-2.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - unkown element id</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an unknow element id used as the value of the 'nav-left' property value does not hinder normal spacial navigation.">
+<style>
+#start {
+ nav-left: #foo;
+}
+</style>
+</head>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating left moves the focus to the "FINISH" link.</p>
+
+ <a href="" id="finish">FINISH</a> <a href="" id="start">START</a>
+</body></html>
diff --git a/testing/web-platform/tests/css/css-ui/nav-dir-missing-3.html b/testing/web-platform/tests/css/css-ui/nav-dir-missing-3.html
new file mode 100644
index 0000000000..327e387edd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-dir-missing-3.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - unkown element id</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an unknow element id used as the value of the 'nav-down' property value does not hinder normal spacial navigation.">
+<style>
+#start {
+ nav-down: #foo;
+}
+</style>
+</head>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating down moves the focus to the "FINISH" link.</p>
+
+ <a href="" id="start">START</a><br>
+ <a href="" id="finish">FINISH</a>
+</body></html>
diff --git a/testing/web-platform/tests/css/css-ui/nav-dir-missing-4.html b/testing/web-platform/tests/css/css-ui/nav-dir-missing-4.html
new file mode 100644
index 0000000000..643ff67e8a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-dir-missing-4.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - unkown element id</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that an unknow element id used as the value of the 'nav-up' property value does not hinder normal spacial navigation.">
+<style>
+#start {
+ nav-up: #foo;
+}
+</style>
+</head>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating up moves the focus to the "FINISH" link.</p>
+
+ <a href="" id="finish">FINISH</a><br>
+ <a href="" id="start">START</a>
+</body></html>
diff --git a/testing/web-platform/tests/css/css-ui/nav-dir-target-001.html b/testing/web-platform/tests/css/css-ui/nav-dir-target-001.html
new file mode 100644
index 0000000000..91c660272c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-dir-target-001.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - 'current' target frame</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="reviewer" title="Leif Arne Storset" href="mailto:lstorset@opera.com">
+<link rel="reviewer" title="Rebecca Hauck" href="mailto:rhauck@adobe.com"><!-- 07-18-2013 -->
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'current' frame value is respected.">
+<style>
+ #start {
+ nav-down: #finish current;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating down once moves the focus to the "FINISH" link.</p>
+
+ <p><a href="" id="finish">FINISH</a></p>
+
+ <p><a href="" id="start">START</a></p>
+
+ <iframe src="support/nav-dir-target-001-frame.html"></iframe>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-dir-target-002.html b/testing/web-platform/tests/css/css-ui/nav-dir-target-002.html
new file mode 100644
index 0000000000..8c7e5512c3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-dir-target-002.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - 'root' target frame</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="reviewer" title="Leif Arne Storset" href="mailto:lstorset@opera.com">
+<link rel="reviewer" title="Rebecca Hauck" href="mailto:rhauck@adobe.com"><!-- 07-18-2013 -->
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'root' frame value is respected.">
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating down once moves the focus to the "FINISH" link.</p>
+
+ <p><a href="" id="finish">FINISH</a></p>
+
+ <iframe src="support/nav-dir-target-002-frame.html"></iframe>
+
+ <p><a href="">ignore</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-dir-target-003.html b/testing/web-platform/tests/css/css-ui/nav-dir-target-003.html
new file mode 100644
index 0000000000..46e65c4e62
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-dir-target-003.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - named target frame</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="reviewer" title="Leif Arne Storset" href="mailto:lstorset@opera.com">
+<link rel="reviewer" title="Rebecca Hauck" href="mailto:rhauck@adobe.com"><!-- 07-18-2013 -->
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that a named target frame value is respected.">
+<style>
+ #start {
+ nav-right: #finish "frame";
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating right once moves the focus to the "FINISH" link.</p>
+
+ <p><a href="" id="start">START</a> <a href="" id="finish">ignore</a></p>
+
+ <iframe src="support/nav-dir-target-003-frame.html" name="frame"></iframe>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-dir-target-004.html b/testing/web-platform/tests/css/css-ui/nav-dir-target-004.html
new file mode 100644
index 0000000000..82b604598a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-dir-target-004.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - non-existing target frame</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="reviewer" title="Leif Arne Storset" href="mailto:lstorset@opera.com">
+<link rel="reviewer" title="Rebecca Hauck" href="mailto:rhauck@adobe.com"><!-- 07-18-2013 -->
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that a non-existing target frame value is treated as 'current'.">
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating up once moves the focus to the "FINISH" link.</p>
+
+ <p><a href="" id="finish">ignore</a></p>
+
+ <iframe src="support/nav-dir-target-004-frame.html"></iframe>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-dir-target-005.html b/testing/web-platform/tests/css/css-ui/nav-dir-target-005.html
new file mode 100644
index 0000000000..b286df22f6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-dir-target-005.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - sibling target frame</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="reviewer" title="Leif Arne Storset" href="mailto:lstorset@opera.com">
+<link rel="reviewer" title="Rebecca Hauck" href="mailto:rhauck@adobe.com"><!-- 07-18-2013 -->
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that a named frame value also works for sibling frames.">
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating left once moves the focus to the "FINISH" link.</p>
+
+ <iframe src="support/nav-dir-target-005-frame.html"></iframe>
+ <iframe src="support/nav-dir-target-003-frame.html" name="sibling"></iframe>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-dir-target-006.html b/testing/web-platform/tests/css/css-ui/nav-dir-target-006.html
new file mode 100644
index 0000000000..7c9194af53
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-dir-target-006.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - missing target element</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="reviewer" title="Leif Arne Storset" href="mailto:lstorset@opera.com">
+<link rel="reviewer" title="Rebecca Hauck" href="mailto:rhauck@adobe.com"><!-- 07-18-2013 -->
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that focus does not change to a different frame if the identifier is missing from the target frame.">
+<style>
+ #start {
+ nav-left: #finish current;
+ }
+ #intermediate {
+ nav-left: #end;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating left twice moves the focus to the "FINISH" link.</p>
+
+ <p><a href="">ignore</a> <a href="" id="intermediate">ignore</a> <a href="" id="start">START</a></p>
+
+ <iframe src="support/nav-dir-target-001-frame.html"></iframe>
+
+ <p><a href="" id="end">FINISH</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-down-000.html b/testing/web-platform/tests/css/css-ui/nav-down-000.html
new file mode 100644
index 0000000000..47ebd3fa27
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-down-000.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - property inheritance for 'nav-down'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'nav-down' property value is not inherited for 'nav-left'.">
+<style type="text/css">
+ #parent {
+ nav-down: #finish;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating down once moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <p><a href="">ignore</a></p>
+ <p><a href="">START</a></p>
+ <p><a href="" id="end">FINISH</a></p>
+ <p><a href="" id="finish">ignore</a></p>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-down-001.html b/testing/web-platform/tests/css/css-ui/nav-down-001.html
new file mode 100644
index 0000000000..319be2f89b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-down-001.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation (nav-down) - &lt;id&gt;</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="reviewer" title="Leif Arne Storset" href="mailto:lstorset@opera.com">
+<link rel="reviewer" title="Rebecca Hauck" href="mailto:rhauck@adobe.com"><!-- 07-18-2013 -->
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that downward navigation input respects the 'nav-down' property.">
+<style>
+ #start {
+ nav-down: #finish;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating down once moves the focus to the "FINISH" link.</p>
+
+ <div><a href="" id="finish">FINISH</a> <a href="">ignore</a> <a href="">ignore</a> <a href="">ignore</a> <a href="">ignore</a></div>
+
+ <div><a href="">ignore</a> <a href="">ignore</a> <a href="" id="start">START</a> <a href="">ignore</a> <a href="">ignore</a></div>
+
+ <div><a href="">ignore</a> <a href="">ignore</a> <a href="">ignore</a> <a href="">ignore</a> <a href="">ignore</a></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-down-002.html b/testing/web-platform/tests/css/css-ui/nav-down-002.html
new file mode 100644
index 0000000000..5d4df4e2d5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-down-002.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - 'auto' value for 'nav-down'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'auto' value is implemented for 'nav-down'.">
+<style type="text/css">
+ #start {
+ nav-down: #finish;
+ nav-down: auto;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating down once moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <p><a href="">ignore</a></p>
+ <p><a href="" id="start">START</a></p>
+ <p><a href="" id="end">FINISH</a></p>
+ <p><a href="" id="finish">ignore</a></p>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-down-003.html b/testing/web-platform/tests/css/css-ui/nav-down-003.html
new file mode 100644
index 0000000000..6465279e05
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-down-003.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - ID value for 'nav-down'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the ID value is implemented for 'nav-down'.">
+<style type="text/css">
+ #parent {
+ nav-down: #finish;
+ }
+
+ #intermediate {
+ nav-down: #end;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating down twice moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <p><a href="">ignore</a></p>
+ <p><a href="">START</a></p>
+ <p><a href="" id="intermediate">ignore</a></p>
+ <p><a href="">ignore</a></p>
+ </div>
+
+ <div>
+ <p><a href="">ignore</a></p>
+ <p><a href="" id="end">FINISH</a></p>
+ <p><a href="">ignore</a></p>
+ <p><a href="">ignore</a></p>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-down-004.html b/testing/web-platform/tests/css/css-ui/nav-down-004.html
new file mode 100644
index 0000000000..a5b9e01ba3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-down-004.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - input elements for 'nav-down'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that 'nav-down' works for input elements.">
+<style type="text/css">
+ #parent {
+ nav-down: #finish;
+ }
+
+ #intermediate {
+ nav-down: #end;
+ }
+
+ input {
+ display: block;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" text field below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating down twice moves the focus to the "FINISH" text field.</p>
+
+ <div id="parent">
+ <input value="ignore"/>
+ <input value="START"/>
+ <input value="ignore" id="intermediate"/>
+ <input value="ignore"/>
+ </div>
+
+ <div>
+ <input value="ignore"/>
+ <input value="FINISH" id="end"/>
+ <input value="ignore"/>
+ <input value="ignore"/>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-down-005.html b/testing/web-platform/tests/css/css-ui/nav-down-005.html
new file mode 100644
index 0000000000..908b0b7cea
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-down-005.html
@@ -0,0 +1,48 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - elements floating in the writing direction for 'nav-down'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that 'nav-down' works for elements floating to the left.">
+<style type="text/css">
+ div > a {
+ float: left;
+ margin-left: 1em;
+ margin-right: 1em;
+ }
+
+ div {
+ clear: left;
+ }
+
+ #parent {
+ nav-down: #finish;
+ }
+
+ #intermediate {
+ nav-down: #end;
+ }
+
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating down twice moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <a href="">ignore 1</a>
+ <a href="">START</a>
+ <a href="" id="end">FINISH</a>
+ <a href="">ignore 3</a>
+ </div>
+
+ <div>
+ <a href="">ignore 4</a>
+ <a href="" id="intermediate">ignore 2</a>
+ <a href="">ignore 5</a>
+ <a href="">ignore 6</a>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-down-006.html b/testing/web-platform/tests/css/css-ui/nav-down-006.html
new file mode 100644
index 0000000000..74c98430b3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-down-006.html
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - elements floating in opposite to the writing direction for 'nav-down'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that 'nav-down' works for elements floating to the right.">
+<style type="text/css">
+ div > a {
+ float: right;
+ margin-left: 1em;
+ margin-right: 1em;
+ }
+
+ div {
+ clear: right;
+ }
+
+ #parent {
+ nav-down: #finish;
+ }
+
+ #intermediate {
+ nav-down: #end;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating down twice moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <a href="">ignore 1</a>
+ <a href="">ignore 2</a>
+ <a href="">START</a>
+ <a href="">ignore 3</a>
+ </div>
+
+ <div>
+ <a href="">ignore 4</a>
+ <a href="" id="end">FINISH</a>
+ <a href="" id="intermediate">ignore 5</a>
+ <a href="">ignore 6</a>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-down-007.html b/testing/web-platform/tests/css/css-ui/nav-down-007.html
new file mode 100644
index 0000000000..da053f2ebb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-down-007.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - non existing ID for 'nav-down'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'nav-down' is ignored if the ID does not exist.">
+<style type="text/css">
+ #parent {
+ nav-down: #error;
+ }
+
+ #intermediate {
+ nav-down: #foobar;
+ }
+
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating down twice moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <p><a href="">START</a></p>
+ <p><a href="" id="intermediate">ignore</a></p>
+ <p><a href="" id="end">FINISH</a>
+ <p><a href="">ignore</a>
+ </div>
+
+ <div>
+ <p><a href="">ignore</a>
+ <p><a href="">ignore</a>
+ <p><a href="" id="error">ignore</a>
+ <p><a href="">ignore</a>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-down-008.html b/testing/web-platform/tests/css/css-ui/nav-down-008.html
new file mode 100644
index 0000000000..9f3349adaf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-down-008.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - currently focused element for 'nav-down'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that focus doesn't change when navigating to the currently focused element for 'nav-down'.">
+<style>
+ #start {
+ nav-down: #start;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if the "START" element remains focused when navigating down.</p>
+
+ <div>
+ <p><a href="">ignore</a></p>
+ <p><a href="" id="start">START</a></p>
+ <p><a href="">ignore</a></p>
+ </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-down-009.html b/testing/web-platform/tests/css/css-ui/nav-down-009.html
new file mode 100644
index 0000000000..782ab20029
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-down-009.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - 'current' target frame for 'nav-down'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'current' frame value is respected for 'nav-down'.">
+<style>
+ #start {
+ nav-down: #finish current;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating down once moves the focus to the "FINISH" link.</p>
+
+ <div>
+ <p><a href="" id="finish">FINISH</a></p>
+ <iframe src="support/nav-down-009-frame.html"></iframe>
+ <p><a href="" id="start">START</a></p>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-down-010.html b/testing/web-platform/tests/css/css-ui/nav-down-010.html
new file mode 100644
index 0000000000..a27316104a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-down-010.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - 'root' target frame for 'nav-down'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'root' frame value is respected for 'nav-down'.">
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating down once moves the focus to the "FINISH" link.</p>
+
+ <p><a href="" id="finish">FINISH</a></p>
+
+ <iframe src="support/nav-down-010-frame.html"></iframe>
+
+ <p><a href="">ignore</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-down-011.html b/testing/web-platform/tests/css/css-ui/nav-down-011.html
new file mode 100644
index 0000000000..50bf586eb8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-down-011.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - named target frame for 'nav-down'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="contributor" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that a named target frame value is respected for 'nav-down'.">
+<style>
+ #start {
+ nav-down: #finish "frame";
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating down once moves the focus to the "FINISH" link.</p>
+
+ <p>
+ <a href="" id="start">START</a>
+ </p>
+ <p>
+ <a href="" id="finish">ignore</a>
+ </p>
+
+ <iframe src="support/nav-down-011-frame.html" name="frame"></iframe>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-down-012.html b/testing/web-platform/tests/css/css-ui/nav-down-012.html
new file mode 100644
index 0000000000..c9952b4632
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-down-012.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - non-existing target frame for 'nav-down'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that a non-existing target frame value is treated as 'current' for 'nav-down'.">
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating down once moves the focus to the "FINISH" link.</p>
+
+ <iframe src="support/nav-down-012-frame.html"></iframe>
+
+ <p><a href="" id="finish">ignore</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-down-013.html b/testing/web-platform/tests/css/css-ui/nav-down-013.html
new file mode 100644
index 0000000000..2c20dda7fe
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-down-013.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - sibling target frame for 'nav-down'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that a named frame value also works for sibling frames for 'nav-down'.">
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating down once moves the focus to the "FINISH" link.</p>
+
+ <iframe src="support/nav-down-013-frame.html"></iframe>
+ <iframe src="support/nav-down-011-frame.html" name="sibling"></iframe>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-down-014.html b/testing/web-platform/tests/css/css-ui/nav-down-014.html
new file mode 100644
index 0000000000..ff751c89d8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-down-014.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - missing target element for 'nav-down'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that focus does not change to a different frame if the identifier is missing from the target frame for 'nav-down'.">
+<style>
+ #start {
+ nav-down: #finish current;
+ }
+ #intermediate {
+ nav-down: #end;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating down twice moves the focus to the "FINISH" link.</p>
+
+ <p><a href="" id="start">START</a></p>
+ <p><a href="" id="intermediate">ignore</a></p>
+ <p><a href="">ignore</a></p>
+
+ <iframe src="support/nav-down-009-frame.html"></iframe>
+
+ <p><a href="" id="end">FINISH</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-down-015.html b/testing/web-platform/tests/css/css-ui/nav-down-015.html
new file mode 100644
index 0000000000..8c5e2cbf0a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-down-015.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - 'inherit' value for 'nav-down'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'inherit' value is implemented for 'nav-down'.">
+<style type="text/css">
+ #parent {
+ nav-down: #end;
+ }
+
+ #intermediateParent, #intermediate {
+ nav-down: inherit;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating down twice moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <p><a href="">ignore</a></p>
+ <p><a href="">START</a></p>
+ <p id="intermediateParent"><a href="" id="intermediate">ignore</a></p>
+ <p><a href="">ignore</a></p>
+ </div>
+
+ <div>
+ <p><a href="">ignore</a></p>
+ <p><a href="" id="end">FINISH</a></p>
+ <p><a href="">ignore</a></p>
+ <p><a href="">ignore</a></p>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-down-016.html b/testing/web-platform/tests/css/css-ui/nav-down-016.html
new file mode 100644
index 0000000000..4c247b3575
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-down-016.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - disabled elements are not navigated for 'nav-down'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that disabled elements are not navigated for 'nav-down'.">
+<style type="text/css">
+ #start {
+ nav-down: #intermediate;
+ }
+ input {
+ display: block;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" text field below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating down moves the focus to the "FINISH" text field and not the disabled "ignore" one.</p>
+
+ <div id="parent">
+ <input value="START"/>
+ <input value="ignore" disabled="disabled" id="intermediate"/>
+ <input value="FINISH"/>
+ </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-left-000.html b/testing/web-platform/tests/css/css-ui/nav-left-000.html
new file mode 100644
index 0000000000..6b4302b78f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-left-000.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - property inheritance for 'nav-left'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'nav-left' property value is not inherited for 'nav-left'.">
+<style type="text/css">
+ #parent {
+ nav-left: #finish;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating left once moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <a href="">ignore</a>
+ <a href="" id="end">FINISH</a>
+ <a href="">START</a>
+ <a href="" id="finish">ignore</a>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-left-001.html b/testing/web-platform/tests/css/css-ui/nav-left-001.html
new file mode 100644
index 0000000000..7d5bebbfe5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-left-001.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation (nav-left) - &lt;id&gt;</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="reviewer" title="Leif Arne Storset" href="mailto:lstorset@opera.com">
+<link rel="reviewer" title="Rebecca Hauck" href="mailto:rhauck@adobe.com"><!-- 07-18-2013 -->
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that leftward navigation input respects the 'nav-left' property.">
+<style>
+ #start {
+ nav-left: #finish;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating left once moves the focus to the "FINISH" link.</p>
+
+ <div><a href="">ignore</a> <a href="" id="finish">FINISH</a> <a href="">ignore</a> <a href="">ignore</a> <a href="">ignore</a></div>
+
+ <div><a href="">ignore</a> <a href="">ignore</a> <a href="" id="start">START</a> <a href="">ignore</a> <a href="">ignore</a></div>
+
+ <div><a href="">ignore</a> <a href="">ignore</a> <a href="">ignore</a> <a href="">ignore</a> <a href="">ignore</a></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-left-002.html b/testing/web-platform/tests/css/css-ui/nav-left-002.html
new file mode 100644
index 0000000000..0f2618e4c8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-left-002.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - 'auto' value for 'nav-left'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'auto' value is implemented for 'nav-left'.">
+<style type="text/css">
+ #start {
+ nav-left: #finish;
+ nav-left: auto;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating left once moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <a href="">ignore</a>
+ <a href="" id="end">FINISH</a>
+ <a href="" id="start">START</a>
+ <a href="" id="finish">ignore</a>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-left-003.html b/testing/web-platform/tests/css/css-ui/nav-left-003.html
new file mode 100644
index 0000000000..405edba732
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-left-003.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - ID value for 'nav-left'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the ID value is implemented for 'nav-left'.">
+<style type="text/css">
+ #parent {
+ nav-left: #finish;
+ }
+
+ #intermediate {
+ nav-left: #end;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating left twice moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <a href="">ignore</a>
+ <a href="" id="intermediate">ignore</a>
+ <a href="">START</a>
+ <a href="">ignore</a>
+ </div>
+
+ <div>
+ <a href="">ignore</a>
+ <a href="" id="end">FINISH</a>
+ <a href="">ignore</a>
+ <a href="">ignore</a>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-left-004.html b/testing/web-platform/tests/css/css-ui/nav-left-004.html
new file mode 100644
index 0000000000..e68fe6ed55
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-left-004.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - input elements for 'nav-left'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that 'nav-left' works for input elements.">
+<style type="text/css">
+ #parent {
+ nav-left: #finish;
+ }
+
+ #intermediate {
+ nav-left: #end;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" text field below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating left twice moves the focus to the "FINISH" text field.</p>
+
+ <div id="parent">
+ <input value="ignore"/>
+ <input value="ignore" id="intermediate"/>
+ <input value="START"/>
+ <input value="ignore"/>
+ </div>
+
+ <div>
+ <input value="ignore"/>
+ <input value="FINISH" id="end"/>
+ <input value="ignore"/>
+ <input value="ignore"/>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-left-005.html b/testing/web-platform/tests/css/css-ui/nav-left-005.html
new file mode 100644
index 0000000000..6ac91c161b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-left-005.html
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - elements floating in the writing direction for 'nav-left'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that 'nav-left' works for elements floating to the left.">
+<style type="text/css">
+ div > a {
+ float: left;
+ margin-left: 1em;
+ margin-right: 1em;
+ }
+
+ div {
+ clear: left;
+ }
+
+ #parent {
+ nav-left: #finish;
+ }
+
+ #intermediate {
+ nav-left: #end;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating left twice moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <a href="">ignore 1</a>
+ <a href="" id="intermediate">ignore 2</a>
+ <a href="">START</a>
+ <a href="">ignore 3</a>
+ </div>
+
+ <div>
+ <a href="">ignore 4</a>
+ <a href="" id="end">FINISH</a>
+ <a href="">ignore 5</a>
+ <a href="">ignore 6</a>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-left-006.html b/testing/web-platform/tests/css/css-ui/nav-left-006.html
new file mode 100644
index 0000000000..2e2a93bd87
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-left-006.html
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - elements floating in opposite to the writing direction for 'nav-left'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that 'nav-left' works for elements floating to the right.">
+<style type="text/css">
+ div > a {
+ float: right;
+ margin-left: 1em;
+ margin-right: 1em;
+ }
+
+ div {
+ clear: right;
+ }
+
+ #parent {
+ nav-left: #finish;
+ }
+
+ #intermediate {
+ nav-left: #end;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating left twice moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <a href="">ignore 1</a>
+ <a href="">ignore 2</a>
+ <a href="">START</a>
+ <a href="" id="intermediate">ignore 3</a>
+ </div>
+
+ <div>
+ <a href="">ignore 4</a>
+ <a href="" id="end">FINISH</a>
+ <a href="">ignore 5</a>
+ <a href="">ignore 6</a>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-left-007.html b/testing/web-platform/tests/css/css-ui/nav-left-007.html
new file mode 100644
index 0000000000..42f19dac0f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-left-007.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - non existing ID for 'nav-left'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'nav-left' is ignored if the ID does not exist.">
+<style type="text/css">
+ #parent {
+ nav-left: #error;
+ }
+
+ #intermediate {
+ nav-left: #foobar;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating left twice moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <a href="" id="end">FINISH</a>
+ <a href="" id="intermediate">ignore</a>
+ <a href="">START</a>
+ <a href="">ignore</a>
+ </div>
+
+ <div>
+ <a href="">ignore</a>
+ <a href="">ignore</a>
+ <a href="" id="error">ignore</a>
+ <a href="">ignore</a>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-left-008.html b/testing/web-platform/tests/css/css-ui/nav-left-008.html
new file mode 100644
index 0000000000..ed638c2fba
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-left-008.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - currently focused element for 'nav-left'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that focus doesn't change when navigating to the currently focused element for 'nav-left'.">
+<style>
+ #start {
+ nav-left: #start;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if the "START" element remains focused when navigating left.</p>
+
+ <div><a href="">ignore</a> <a href="" id="start">START</a> <a href="">ignore</a></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-left-009.html b/testing/web-platform/tests/css/css-ui/nav-left-009.html
new file mode 100644
index 0000000000..d5e18a59a9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-left-009.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - 'current' target frame for 'nav-left'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'current' frame value is respected for 'nav-left'.">
+<style>
+ #start {
+ nav-left: #finish current;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating left once moves the focus to the "FINISH" link.</p>
+
+ <div>
+ <a href="" id="finish">FINISH</a>
+ <iframe src="support/nav-left-009-frame.html"></iframe>
+ <a href="" id="start">START</a>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-left-010.html b/testing/web-platform/tests/css/css-ui/nav-left-010.html
new file mode 100644
index 0000000000..1d1129bef1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-left-010.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - 'root' target frame for 'nav-left'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'root' frame value is respected for 'nav-left'.">
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating left once moves the focus to the "FINISH" link.</p>
+
+ <p><a href="" id="finish">FINISH</a></p>
+
+ <iframe src="support/nav-left-010-frame.html"></iframe>
+
+ <p><a href="">ignore</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-left-011.html b/testing/web-platform/tests/css/css-ui/nav-left-011.html
new file mode 100644
index 0000000000..545b449774
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-left-011.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - named target frame for 'nav-left'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="contributor" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that a named target frame value is respected for 'nav-left'.">
+<style>
+ #start {
+ nav-left: #finish "frame";
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating left once moves the focus to the "FINISH" link.</p>
+
+ <p>
+ <a href="" id="finish">ignore</a>
+ <a href="" id="start">START</a>
+ </p>
+
+ <iframe src="support/nav-left-011-frame.html" name="frame"></iframe>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-left-012.html b/testing/web-platform/tests/css/css-ui/nav-left-012.html
new file mode 100644
index 0000000000..c2bcae53eb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-left-012.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - non-existing target frame for 'nav-left'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that a non-existing target frame value is treated as 'current' for 'nav-left'.">
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating left once moves the focus to the "FINISH" link.</p>
+
+ <div>
+ <a href="" id="finish">ignore</a>
+ <iframe src="support/nav-left-012-frame.html"></iframe>
+ </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-left-013.html b/testing/web-platform/tests/css/css-ui/nav-left-013.html
new file mode 100644
index 0000000000..f73eb42379
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-left-013.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - sibling target frame for 'nav-left'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that a named frame value also works for sibling frames for 'nav-left'.">
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating left once moves the focus to the "FINISH" link.</p>
+
+ <iframe src="support/nav-left-013-frame.html"></iframe>
+ <iframe src="support/nav-left-011-frame.html" name="sibling"></iframe>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-left-014.html b/testing/web-platform/tests/css/css-ui/nav-left-014.html
new file mode 100644
index 0000000000..a844eda7c1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-left-014.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - missing target element for 'nav-left'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that focus does not change to a different frame if the identifier is missing from the target frame for 'nav-left'.">
+<style>
+ #start {
+ nav-left: #finish current;
+ }
+ #intermediate {
+ nav-left: #end;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating left twice moves the focus to the "FINISH" link.</p>
+
+ <p><a href="">ignore</a> <a href="" id="intermediate">ignore</a> <a href="" id="start">START</a></p>
+
+ <iframe src="support/nav-left-009-frame.html"></iframe>
+
+ <p><a href="" id="end">FINISH</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-left-015.html b/testing/web-platform/tests/css/css-ui/nav-left-015.html
new file mode 100644
index 0000000000..971e8830d7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-left-015.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - 'inherit' value for 'nav-left'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'inherit' value is implemented for 'nav-left'.">
+<style type="text/css">
+ #parent {
+ nav-left: #end;
+ }
+
+ #intermediate {
+ nav-left: inherit;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating left twice moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <a href="">ignore</a>
+ <a href="" id="intermediate">ignore</a>
+ <a href="">START</a>
+ <a href="">ignore</a>
+ </div>
+
+ <div>
+ <a href="">ignore</a>
+ <a href="" id="end">FINISH</a>
+ <a href="">ignore</a>
+ <a href="">ignore</a>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-left-016.html b/testing/web-platform/tests/css/css-ui/nav-left-016.html
new file mode 100644
index 0000000000..f801bef1f8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-left-016.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - disabled elements are not navigated for 'nav-left'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that disabled elements are not navigated for 'nav-left'.">
+<style type="text/css">
+ #start {
+ nav-left: #intermediate;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" text field below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating left moves the focus to the "FINISH" text field and not the disabled "ignore" one.</p>
+
+ <div id="parent">
+ <input value="FINISH"/>
+ <input value="ignore" disabled="disabled" id="intermediate"/>
+ <input value="START"/>
+ </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-right-000.html b/testing/web-platform/tests/css/css-ui/nav-right-000.html
new file mode 100644
index 0000000000..b637f48bdc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-right-000.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - property inheritance for 'nav-right'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'nav-right' property value is not inherited for 'nav-left'.">
+<style type="text/css">
+ #parent {
+ nav-right: #finish;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating right once moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <a href="">ignore</a>
+ <a href="">START</a>
+ <a href="" id="end">FINISH</a>
+ <a href="" id="finish">ignore</a>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-right-001.html b/testing/web-platform/tests/css/css-ui/nav-right-001.html
new file mode 100644
index 0000000000..df02289146
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-right-001.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation (nav-right) - &lt;id&gt;</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="reviewer" title="Leif Arne Storset" href="mailto:lstorset@opera.com">
+<link rel="reviewer" title="Rebecca Hauck" href="mailto:rhauck@adobe.com"><!-- 07-18-2013 -->
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that rightward navigation input respects the 'nav-right' property.">
+<style>
+ #start {
+ nav-right: #finish;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating right once moves the focus to the "FINISH" link.</p>
+
+ <div><a href="">ignore</a> <a href="">ignore</a> <a href="">ignore</a> <a href="">ignore</a> <a href="">ignore</a></div>
+
+ <div><a href="">ignore</a> <a href="">ignore</a> <a href="" id="start">START</a> <a href="">ignore</a> <a href="">ignore</a></div>
+
+ <div><a href="" id="finish">FINISH</a> <a href="">ignore</a> <a href="">ignore</a> <a href="">ignore</a> <a href="">ignore</a></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-right-002.html b/testing/web-platform/tests/css/css-ui/nav-right-002.html
new file mode 100644
index 0000000000..04be3d7cc8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-right-002.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - 'auto' value for 'nav-right'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'auto' value is implemented for 'nav-right'.">
+<style type="text/css">
+ #start {
+ nav-right: #finish;
+ nav-right: auto;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating right once moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <a href="">ignore</a>
+ <a href="" id="start">START</a>
+ <a href="" id="end">FINISH</a>
+ <a href="" id="finish">ignore</a>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-right-003.html b/testing/web-platform/tests/css/css-ui/nav-right-003.html
new file mode 100644
index 0000000000..447226bf3e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-right-003.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - ID value for 'nav-right'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the ID value is implemented for 'nav-right'.">
+<style type="text/css">
+ #parent {
+ nav-right: #finish;
+ }
+
+ #intermediate {
+ nav-right: #end;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating right twice moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <a href="">ignore</a>
+ <a href="">START</a>
+ <a href="" id="intermediate">ignore</a>
+ <a href="">ignore</a>
+ </div>
+
+ <div>
+ <a href="">ignore</a>
+ <a href="" id="end">FINISH</a>
+ <a href="">ignore</a>
+ <a href="">ignore</a>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-right-004.html b/testing/web-platform/tests/css/css-ui/nav-right-004.html
new file mode 100644
index 0000000000..889631920d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-right-004.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - input elements for 'nav-right'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that 'nav-right' works for input elements.">
+<style type="text/css">
+ #parent {
+ nav-right: #finish;
+ }
+
+ #intermediate {
+ nav-right: #end;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" text field below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating right twice moves the focus to the "FINISH" text field.</p>
+
+ <div id="parent">
+ <input value="ignore"/>
+ <input value="START"/>
+ <input value="ignore" id="intermediate"/>
+ <input value="ignore"/>
+ </div>
+
+ <div>
+ <input value="ignore"/>
+ <input value="FINISH" id="end"/>
+ <input value="ignore"/>
+ <input value="ignore"/>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-right-005.html b/testing/web-platform/tests/css/css-ui/nav-right-005.html
new file mode 100644
index 0000000000..bd2a90b94f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-right-005.html
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - elements floating in the writing direction for 'nav-right'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that 'nav-right' works for elements floating to the left.">
+<style type="text/css">
+ div > a {
+ float: left;
+ margin-right: 1em;
+ margin-right: 1em;
+ }
+
+ div {
+ clear: left;
+ }
+
+ #parent {
+ nav-right: #finish;
+ }
+
+ #intermediate {
+ nav-right: #end;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating right twice moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <a href="">ignore 1</a>
+ <a href="">START</a>
+ <a href="" id="intermediate">ignore 2</a>
+ <a href="">ignore 3</a>
+ </div>
+
+ <div>
+ <a href="">ignore 4</a>
+ <a href="" id="end">FINISH</a>
+ <a href="">ignore 5</a>
+ <a href="">ignore 6</a>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-right-006.html b/testing/web-platform/tests/css/css-ui/nav-right-006.html
new file mode 100644
index 0000000000..e713ff0163
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-right-006.html
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - elements floating in opposite to the writing direction for 'nav-right'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that 'nav-right' works for elements floating to the right.">
+<style type="text/css">
+ div > a {
+ float: right;
+ margin-right: 1em;
+ margin-right: 1em;
+ }
+
+ div {
+ clear: right;
+ }
+
+ #parent {
+ nav-right: #finish;
+ }
+
+ #intermediate {
+ nav-right: #end;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating right twice moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <a href="">ignore 1</a>
+ <a href="" id="intermediate">ignore 2</a>
+ <a href="">START</a>
+ <a href="">ignore 3</a>
+ </div>
+
+ <div>
+ <a href="">ignore 4</a>
+ <a href="" id="end">FINISH</a>
+ <a href="">ignore 5</a>
+ <a href="">ignore 6</a>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-right-007.html b/testing/web-platform/tests/css/css-ui/nav-right-007.html
new file mode 100644
index 0000000000..030d9c5e20
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-right-007.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - non existing ID for 'nav-right'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'nav-right' is ignored if the ID does not exist.">
+<style type="text/css">
+ #parent {
+ nav-right: #error;
+ }
+
+ #intermediate {
+ nav-right: #foobar;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating right twice moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <a href="">START</a>
+ <a href="" id="intermediate">ignore</a>
+ <a href="" id="end">FINISH</a>
+ <a href="">ignore</a>
+ </div>
+
+ <div>
+ <a href="">ignore</a>
+ <a href="">ignore</a>
+ <a href="" id="error">ignore</a>
+ <a href="">ignore</a>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-right-008.html b/testing/web-platform/tests/css/css-ui/nav-right-008.html
new file mode 100644
index 0000000000..ddf154c8a3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-right-008.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - currently focused element for 'nav-right'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that focus doesn't change when navigating to the currently focused element for 'nav-right'.">
+<style>
+ #start {
+ nav-right: #start;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if the "START" element remains focused when navigating right.</p>
+
+ <div>
+ <a href="">ignore</a>
+ <a href="" id="start">START</a>
+ <a href="">ignore</a>
+ </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-right-009.html b/testing/web-platform/tests/css/css-ui/nav-right-009.html
new file mode 100644
index 0000000000..b1fe70bd7d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-right-009.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - 'current' target frame for 'nav-right'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'current' frame value is respected for 'nav-right'.">
+<style>
+ #start {
+ nav-right: #finish current;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating right once moves the focus to the "FINISH" link.</p>
+
+ <div>
+ <a href="" id="start">START</a>
+ <iframe src="support/nav-right-009-frame.html"></iframe>
+ <a href="" id="finish">FINISH</a>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-right-010.html b/testing/web-platform/tests/css/css-ui/nav-right-010.html
new file mode 100644
index 0000000000..4c20160e6b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-right-010.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - 'root' target frame for 'nav-right'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'root' frame value is respected for 'nav-right'.">
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating right once moves the focus to the "FINISH" link.</p>
+
+ <p><a href="" id="finish">FINISH</a></p>
+
+ <iframe src="support/nav-right-010-frame.html"></iframe>
+
+ <p><a href="">ignore</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-right-011.html b/testing/web-platform/tests/css/css-ui/nav-right-011.html
new file mode 100644
index 0000000000..5102cb91e2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-right-011.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - named target frame for 'nav-right'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="contributor" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that a named target frame value is respected for 'nav-right'.">
+<style>
+ #start {
+ nav-right: #finish "frame";
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating right once moves the focus to the "FINISH" link.</p>
+
+ <p>
+ <a href="" id="start">START</a>
+ <a href="" id="finish">ignore</a>
+ </p>
+
+ <iframe src="support/nav-right-011-frame.html" name="frame"></iframe>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-right-012.html b/testing/web-platform/tests/css/css-ui/nav-right-012.html
new file mode 100644
index 0000000000..9c5722c8a7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-right-012.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - non-existing target frame for 'nav-right'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that a non-existing target frame value is treated as 'current' for 'nav-right'.">
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating right once moves the focus to the "FINISH" link.</p>
+
+ <div>
+ <iframe src="support/nav-right-012-frame.html"></iframe>
+ <a href="" id="finish">ignore</a>
+ </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-right-013.html b/testing/web-platform/tests/css/css-ui/nav-right-013.html
new file mode 100644
index 0000000000..d422042660
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-right-013.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - sibling target frame for 'nav-right'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that a named frame value also works for sibling frames for 'nav-right'.">
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating right once moves the focus to the "FINISH" link.</p>
+
+ <iframe src="support/nav-right-011-frame.html" name="sibling"></iframe>
+ <iframe src="support/nav-right-013-frame.html"></iframe>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-right-014.html b/testing/web-platform/tests/css/css-ui/nav-right-014.html
new file mode 100644
index 0000000000..088725a448
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-right-014.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - missing target element for 'nav-right'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that focus does not change to a different frame if the identifier is missing from the target frame for 'nav-right'.">
+<style>
+ #start {
+ nav-right: #finish current;
+ }
+ #intermediate {
+ nav-right: #end;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating right twice moves the focus to the "FINISH" link.</p>
+
+ <p>
+ <a href="" id="start">START</a>
+ <a href="" id="intermediate">ignore</a>
+ <a href="">ignore</a>
+ </p>
+
+ <iframe src="support/nav-right-009-frame.html"></iframe>
+
+ <p><a href="" id="end">FINISH</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-right-015.html b/testing/web-platform/tests/css/css-ui/nav-right-015.html
new file mode 100644
index 0000000000..7b76b0a011
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-right-015.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - 'inherit' value for 'nav-right'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'inherit' value is implemented for 'nav-right'.">
+<style type="text/css">
+ #parent {
+ nav-right: #end;
+ }
+
+ #intermediate {
+ nav-right: inherit;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating right twice moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <a href="">ignore</a>
+ <a href="">START</a>
+ <a href="" id="intermediate">ignore</a>
+ <a href="">ignore</a>
+ </div>
+
+ <div>
+ <a href="">ignore</a>
+ <a href="" id="end">FINISH</a>
+ <a href="">ignore</a>
+ <a href="">ignore</a>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-right-016.html b/testing/web-platform/tests/css/css-ui/nav-right-016.html
new file mode 100644
index 0000000000..5531c5b60c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-right-016.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - disabled elements are not navigated for 'nav-right'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that disabled elements are not navigated for 'nav-right'.">
+<style type="text/css">
+ #start {
+ nav-right: #intermediate;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" text field below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating right moves the focus to the "FINISH" text field and not the disabled "ignore" one.</p>
+
+ <div id="parent">
+ <input value="START"/>
+ <input value="ignore" disabled="disabled" id="intermediate"/>
+ <input value="FINISH"/>
+ </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-up-000.html b/testing/web-platform/tests/css/css-ui/nav-up-000.html
new file mode 100644
index 0000000000..8c71bf5184
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-up-000.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - property inheritance for 'nav-up'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'nav-up' property value is not inherited for 'nav-left'.">
+<style type="text/css">
+ #parent {
+ nav-up: #finish;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating up once moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <p><a href="">ignore</a></p>
+ <p><a href="" id="end">FINISH</a></p>
+ <p><a href="">START</a></p>
+ <p><a href="" id="finish">ignore</a></p>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-up-001.html b/testing/web-platform/tests/css/css-ui/nav-up-001.html
new file mode 100644
index 0000000000..576b349959
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-up-001.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation (nav-up) - &lt;id&gt;</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="reviewer" title="Leif Arne Storset" href="mailto:lstorset@opera.com">
+<link rel="reviewer" title="Rebecca Hauck" href="mailto:rhauck@adobe.com"><!-- 07-18-2013 -->
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that upward navigation input respects the 'nav-up' property.">
+<style>
+ #start {
+ nav-up: #finish;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating up once moves the focus to the "FINISH" link.</p>
+
+ <div><a href="">ignore</a> <a href="">ignore</a> <a href="">ignore</a> <a href="">ignore</a> <a href="">ignore</a></div>
+
+ <div><a href="">ignore</a> <a href="">ignore</a> <a href="" id="start">START</a> <a href="">ignore</a> <a href="">ignore</a></div>
+
+ <div><a href="">ignore</a> <a href="">ignore</a> <a href="">ignore</a> <a href="">ignore</a> <a href="" id="finish">FINISH</a></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-up-002.html b/testing/web-platform/tests/css/css-ui/nav-up-002.html
new file mode 100644
index 0000000000..cbcf11a924
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-up-002.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - 'auto' value for 'nav-up'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'auto' value is implemented for 'nav-up'.">
+<style type="text/css">
+ #start {
+ nav-up: #finish;
+ nav-up: auto;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating up once moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <p><a href="">ignore</a></p>
+ <p><a href="" id="end">FINISH</a></p>
+ <p><a href="" id="start">START</a></p>
+ <p><a href="" id="finish">ignore</a></p>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-up-003.html b/testing/web-platform/tests/css/css-ui/nav-up-003.html
new file mode 100644
index 0000000000..9353af9425
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-up-003.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - ID value for 'nav-up'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the ID value is implemented for 'nav-up'.">
+<style type="text/css">
+ #parent {
+ nav-up: #finish;
+ }
+
+ #intermediate {
+ nav-up: #end;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating up twice moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <p><a href="">ignore</a></p>
+ <p><a href="" id="intermediate">ignore</a></p>
+ <p><a href="">START</a></p>
+ <p><a href="">ignore</a></p>
+ </div>
+
+ <div>
+ <p><a href="">ignore</a></p>
+ <p><a href="" id="end">FINISH</a></p>
+ <p><a href="">ignore</a></p>
+ <p><a href="">ignore</a></p>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-up-004.html b/testing/web-platform/tests/css/css-ui/nav-up-004.html
new file mode 100644
index 0000000000..16eb4fd5cf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-up-004.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - input elements for 'nav-up'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that 'nav-up' works for input elements.">
+<style type="text/css">
+ #parent {
+ nav-up: #finish;
+ }
+
+ #intermediate {
+ nav-up: #end;
+ }
+
+ input {
+ display: block;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" text field below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating up twice moves the focus to the "FINISH" text field.</p>
+
+ <div id="parent">
+ <input value="ignore"/>
+ <input value="ignore" id="intermediate"/>
+ <input value="START"/>
+ <input value="ignore"/>
+ </div>
+
+ <div>
+ <input value="ignore"/>
+ <input value="FINISH" id="end"/>
+ <input value="ignore"/>
+ <input value="ignore"/>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-up-005.html b/testing/web-platform/tests/css/css-ui/nav-up-005.html
new file mode 100644
index 0000000000..7598a08e22
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-up-005.html
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - elements floating in the writing direction for 'nav-up'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that 'nav-up' works for elements floating to the left.">
+<style type="text/css">
+ div > a {
+ float: up;
+ margin-up: 1em;
+ margin-right: 1em;
+ }
+
+ div {
+ clear: up;
+ }
+
+ #parent {
+ nav-up: #finish;
+ }
+
+ #intermediate {
+ nav-up: #end;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating up twice moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <p><a href="">ignore 1</a></p>
+ <p><a href="" id="intermediate">ignore 2</a></p>
+ <p><a href="">START</a></p>
+ <p><a href="">ignore 3</a></p>
+ </div>
+
+ <div>
+ <p><a href="">ignore 4</a></p>
+ <p><a href="" id="end">FINISH</a></p>
+ <p><a href="">ignore 5</a></p>
+ <p><a href="">ignore 6</a></p>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-up-006.html b/testing/web-platform/tests/css/css-ui/nav-up-006.html
new file mode 100644
index 0000000000..168276514a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-up-006.html
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - elements floating in opposite to the writing direction for 'nav-up'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that 'nav-up' works for elements floating to the right.">
+<style type="text/css">
+ div > a {
+ float: right;
+ margin-up: 1em;
+ margin-right: 1em;
+ }
+
+ div {
+ clear: right;
+ }
+
+ #parent {
+ nav-up: #finish;
+ }
+
+ #intermediate {
+ nav-up: #end;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating up twice moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <a href="">ignore 1</a>
+ <a href="" id="intermediate">ignore 3</a>
+ <a href="" id="end">FINISH</a>
+ <a href="">ignore 2</a>
+ </div>
+
+ <div>
+ <a href="">ignore 4</a>
+ <a href="">START</a>
+ <a href="">ignore 5</a>
+ <a href="">ignore 6</a>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-up-007.html b/testing/web-platform/tests/css/css-ui/nav-up-007.html
new file mode 100644
index 0000000000..17251afd47
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-up-007.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - non existing ID for 'nav-up'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'nav-up' is ignored if the ID does not exist.">
+<style type="text/css">
+ #parent {
+ nav-up: #error;
+ }
+
+ #intermediate {
+ nav-up: #foobar;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating up twice moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <p><a href="" id="end">FINISH</a></p>
+ <p><a href="" id="intermediate">ignore</a></p>
+ <p><a href="">START</a></p>
+ <p><a href="">ignore</a></p>
+ </div>
+
+ <div>
+ <p><a href="">ignore</a></p>
+ <p><a href="">ignore</a></p>
+ <p><a href="" id="error">ignore</a></p>
+ <p><a href="">ignore</a></p>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-up-008.html b/testing/web-platform/tests/css/css-ui/nav-up-008.html
new file mode 100644
index 0000000000..c6c53a68df
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-up-008.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - currently focused element for 'nav-up'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that focus doesn't change when navigating to the currently focused element for 'nav-up'.">
+<style>
+ #start {
+ nav-up: #start;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if the "START" element remains focused when navigating up.</p>
+
+ <div>
+ <p><a href="">ignore</a></p>
+ <p><a href="" id="start">START</a></p>
+ <p><a href="">ignore</a></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-up-009.html b/testing/web-platform/tests/css/css-ui/nav-up-009.html
new file mode 100644
index 0000000000..757ca6a904
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-up-009.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - 'current' target frame for 'nav-up'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'current' frame value is respected for 'nav-up'.">
+<style>
+ #start {
+ nav-up: #finish current;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating up once moves the focus to the "FINISH" link.</p>
+
+ <div>
+ <p><a href="" id="finish">FINISH</a></p>
+ <iframe src="support/nav-up-009-frame.html"></iframe>
+ <p><a href="" id="start">START</a></p>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-up-010.html b/testing/web-platform/tests/css/css-ui/nav-up-010.html
new file mode 100644
index 0000000000..c7e1c0e470
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-up-010.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - 'root' target frame for 'nav-up'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'root' frame value is respected for 'nav-up'.">
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating up once moves the focus to the "FINISH" link.</p>
+
+ <p><a href="" id="finish">FINISH</a></p>
+
+ <iframe src="support/nav-up-010-frame.html"></iframe>
+
+ <p><a href="">ignore</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-up-011.html b/testing/web-platform/tests/css/css-ui/nav-up-011.html
new file mode 100644
index 0000000000..15cccc5b20
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-up-011.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - named target frame for 'nav-up'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="contributor" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that a named target frame value is respected for 'nav-up'.">
+<style>
+ #start {
+ nav-up: #finish "frame";
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating up once moves the focus to the "FINISH" link.</p>
+
+ <p><a href="" id="finish">ignore</a></p>
+ <p><a href="" id="start">START</a></p>
+
+ <iframe src="support/nav-up-011-frame.html" name="frame"></iframe>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-up-012.html b/testing/web-platform/tests/css/css-ui/nav-up-012.html
new file mode 100644
index 0000000000..aed5f2195d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-up-012.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - non-existing target frame for 'nav-up'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that a non-existing target frame value is treated as 'current' for 'nav-up'.">
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating up once moves the focus to the "FINISH" link.</p>
+
+ <p><a href="" id="finish">ignore</a></p>
+
+ <iframe src="support/nav-up-012-frame.html"></iframe>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-up-013.html b/testing/web-platform/tests/css/css-ui/nav-up-013.html
new file mode 100644
index 0000000000..2fec4da661
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-up-013.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - sibling target frame for 'nav-up'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that a named frame value also works for sibling frames for 'nav-up'.">
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating up once moves the focus to the "FINISH" link.</p>
+
+ <iframe src="support/nav-up-013-frame.html"></iframe>
+ <iframe src="support/nav-up-011-frame.html" name="sibling"></iframe>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-up-014.html b/testing/web-platform/tests/css/css-ui/nav-up-014.html
new file mode 100644
index 0000000000..ceb2954859
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-up-014.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - missing target element for 'nav-up'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that focus does not change to a different frame if the identifier is missing from the target frame for 'nav-up'.">
+<style>
+ #start {
+ nav-up: #finish current;
+ }
+ #intermediate {
+ nav-up: #end;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating up twice moves the focus to the "FINISH" link.</p>
+
+ <p><a href="">ignore</a></p>
+ <p><a href="" id="intermediate">ignore</a></p>
+ <p><a href="" id="start">START</a></p>
+
+ <iframe src="support/nav-up-009-frame.html"></iframe>
+
+ <p><a href="" id="end">FINISH</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-up-015.html b/testing/web-platform/tests/css/css-ui/nav-up-015.html
new file mode 100644
index 0000000000..3680bc0ddf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-up-015.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - 'inherit' value for 'nav-up'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the 'inherit' value is implemented for 'nav-up'.">
+<style type="text/css">
+ #parent {
+ nav-up: #end;
+ }
+
+ #intermediateParent, #intermediate {
+ nav-up: inherit;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" link below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating up twice moves the focus to the "FINISH" link.</p>
+
+ <div id="parent">
+ <p><a href="">ignore</a></p>
+ <p id="intermediateParent"><a href="" id="intermediate">ignore</a></p>
+ <p><a href="">START</a></p>
+ <p><a href="">ignore</a></p>
+ </div>
+
+ <div>
+ <p><a href="">ignore</a></p>
+ <p><a href="" id="end">FINISH</a></p>
+ <p><a href="">ignore</a></p>
+ <p><a href="">ignore</a></p>
+ </div>
+
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/nav-up-016.html b/testing/web-platform/tests/css/css-ui/nav-up-016.html
new file mode 100644
index 0000000000..bca0f73dde
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nav-up-016.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - disabled elements are not navigated for 'nav-up'</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#nav-dir">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that disabled elements are not navigated for 'nav-up'.">
+<style type="text/css">
+ #start {
+ nav-up: #intermediate;
+ }
+
+ input {
+ display: block;
+ }
+</style>
+<body>
+ <p>First, use directional navigation to navigate the focus to the "START" text field below.</p>
+ <!-- In Opera 12.16, directional navigation may be done using Shift+<arrow key>.
+ In the SmartTV emulator, use the keypad in the GUI. -->
+ <p>Test passes if navigating up moves the focus to the "FINISH" text field and not the disabled "ignore" one.</p>
+
+ <div id="parent">
+ <input value="FINISH"/>
+ <input value="ignore" disabled="disabled" id="intermediate"/>
+ <input value="START"/>
+ </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/neg-outline-offset-border-radius-crash.html b/testing/web-platform/tests/css/css-ui/neg-outline-offset-border-radius-crash.html
new file mode 100644
index 0000000000..eed5702e62
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/neg-outline-offset-border-radius-crash.html
@@ -0,0 +1,12 @@
+<!doctype html>
+<link rel="help" href="https://drafts.csswg.org/css-ui/#outline-offset">
+<link rel="help" href="https://crbug.com/1301077">
+<style>
+#target {
+ width: 100px;
+ height: 10px;
+ border-radius: 10px;
+ outline: 20px solid green;
+ outline-offset: -200px;
+</style>
+<div id="target"></div>
diff --git a/testing/web-platform/tests/css/css-ui/nothing-below-ref.html b/testing/web-platform/tests/css/css-ui/nothing-below-ref.html
new file mode 100644
index 0000000000..c8d6508ace
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/nothing-below-ref.html
@@ -0,0 +1,3 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Reference: nothing below</title>
+<p>There should be nothing below:</p>
diff --git a/testing/web-platform/tests/css/css-ui/outline-001.html b/testing/web-platform/tests/css/css-ui/outline-001.html
new file mode 100644
index 0000000000..e669e23136
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-001.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: outline - create outline likes border property</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<link rel="author" title="Shiyou Tan" href="mailto:shiyoux.tan@intel.com">
+<link rel="help" title="7.1. 'outline' property" href="http://www.w3.org/TR/css3-ui/#outline">
+<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+<meta name="assert" content="Test checks that the outline property creates outlines around visual objects and makes them stand out">
+<style>
+ #container {
+ background-color: red;
+ height: 100px;
+ width: 100px;
+ }
+ #test {
+ background-color: green;
+ height: 60px;
+ left: 20px;
+ outline: 20px green solid;
+ position: relative;
+ top: 20px;
+ width: 60px;
+ }
+</style>
+<body>
+ <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+ <div id="container">
+ <div id="test"></div>
+ </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/outline-002.html b/testing/web-platform/tests/css/css-ui/outline-002.html
new file mode 100644
index 0000000000..7d8253d454
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-002.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: outline - inherit (basic)</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<link rel="author" title="Shiyou Tan" href="mailto:shiyoux.tan@intel.com">
+<link rel="help" title="7.1. 'outline' property" href="http://www.w3.org/TR/css3-ui/#outline">
+<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+<meta name="assert" content="Test checks that the outline property inherits the parent's value when outline set inherit">
+<style>
+ #container {
+ background-color: red;
+ height: 100px;
+ width: 100px;
+ }
+ #parent {
+ background-color: red;
+ height: 80px;
+ left: 10px;
+ outline: 10px green solid;
+ position: relative;
+ top: 10px;
+ width: 80px;
+ }
+ #child {
+ background-color: green;
+ height: 60px;
+ left: 10px;
+ outline: inherit;
+ position: relative;
+ top: 10px;
+ width: 60px;
+ }
+</style>
+<body>
+ <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+ <div id="container">
+ <div id="parent">
+ <div id="child"></div>
+ </div>
+ </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/outline-003.html b/testing/web-platform/tests/css/css-ui/outline-003.html
new file mode 100644
index 0000000000..2133930f0f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-003.html
@@ -0,0 +1,52 @@
+<!doctype html>
+<html lang=en>
+ <meta charset=utf-8>
+ <title>CSS-UI test: outline & layout</title>
+ <link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+ <meta name=flags content="">
+ <meta name=assert content="Outline does not influence size or position, and has no impact on layout.">
+ <link rel=help href="https://drafts.csswg.org/css-ui-3/#outline-props">
+ <link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+<style>
+div {
+ background: red;
+ width: 100px;
+ height: 100px;
+}
+span:nth-of-type(1) {
+ float: left;
+ width: 30px;
+ height: 30px;
+ outline: solid 10px green;
+ background: green;
+
+ position: relative;
+ top: 10px;
+ left: 10px;
+}
+span:nth-of-type(2) {
+ float: left;
+ width: 0;
+ height: 0;
+ outline: solid 25px green;
+ background: red;
+
+ position: relative;
+ top: 25px;
+ left: 45px;
+}
+span:nth-of-type(3) {
+ float: left;
+ clear: left;
+ width: 100px;
+ height: 50px;
+ background: green;
+
+ position: relative;
+ top: 20px;
+}
+</style>
+
+ <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+ <div><span></span><span></span><span></span></div>
+
diff --git a/testing/web-platform/tests/css/css-ui/outline-004.html b/testing/web-platform/tests/css/css-ui/outline-004.html
new file mode 100644
index 0000000000..35029598ca
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-004.html
@@ -0,0 +1,30 @@
+<!doctype html>
+<html lang=en>
+ <meta charset=utf-8>
+ <title>CSS-UI test: connected outline parts</title>
+ <link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+ <meta name=flags content="ahem should">
+ <meta name=assert content="Each part of the outline should be fully connected rather than open on some sides">
+ <link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+ <link rel=help href="https://drafts.csswg.org/css-ui-3/#outline-props">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+span {
+ outline: solid green 10px;
+ color: green;
+}
+div {
+ box-sizing: border-box;
+ width: 100px;
+ height: 100px;
+ padding: 10px;
+ line-height: 40px;
+ font-size: 40px;
+ background: red;
+ font-family: Ahem;
+}
+</style>
+
+ <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+ <div><span>xx<br>xx</span></div>
+
diff --git a/testing/web-platform/tests/css/css-ui/outline-005.html b/testing/web-platform/tests/css/css-ui/outline-005.html
new file mode 100644
index 0000000000..69b70ddd75
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-005.html
@@ -0,0 +1,33 @@
+<!doctype html>
+<html lang=en>
+ <meta charset=utf-8>
+ <title>CSS-UI test: outline & border-radius</title>
+ <link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+ <meta name=flags content="should">
+ <meta name=assert content="To the extent that the outline follows the border edge, it should follow the border-radius curve.">
+ <!-- Allow slight color differences where the outline and the background intersect -->
+ <meta name=fuzzy content="0-2;0-100">
+ <link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+ <link rel=help href="https://drafts.csswg.org/css-ui-3/#outline-props">
+<style>
+body > div {
+ width: 100px;
+ height: 100px;
+ overflow: hidden;
+ background: red;
+ display: table-cell; /* Make a BFC */
+}
+div > div {
+ width: 50px;
+ height: 50px;
+ margin: 25px;
+ background: green;
+ border-radius: 100%;
+ outline: solid green 100px;
+ outline-offset: -1px;
+}
+</style>
+
+ <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+ <div><div></div></div>
+
diff --git a/testing/web-platform/tests/css/css-ui/outline-006.html b/testing/web-platform/tests/css/css-ui/outline-006.html
new file mode 100644
index 0000000000..29f0ea66d5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-006.html
@@ -0,0 +1,31 @@
+<!doctype html>
+<html lang=en>
+ <meta charset=utf-8>
+ <title>CSS-UI test: outline-color:invert</title>
+ <link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+ <meta name=flags content="">
+ <meta name=assert content="outline-color:invert must do pixel-level color invertion OR fail to parse, in which case the initial value must be currentcolor">
+ <link rel="match" href="reference/outline-006-ref.html">
+ <link rel=help href="https://drafts.csswg.org/css-ui-3/#outline-props">
+<style>
+body > div {
+ width: 100px;
+ height: 100px;
+ display: table-cell; /* Make a BFC */
+ background: rgb(255,127,255); /* inverse of green (rgb(0,128,0)) */
+}
+div > div {
+ color: green;
+ background: green;
+ margin: 25px;
+ width: 50px;
+ height: 50px;
+ outline: solid 25px;
+ outline-color: invert;
+}
+
+</style>
+
+ <p>Test passes if there is a filled green square and <strong>no pink</strong>.</p>
+ <div><div></div></div>
+
diff --git a/testing/web-platform/tests/css/css-ui/outline-007.html b/testing/web-platform/tests/css/css-ui/outline-007.html
new file mode 100644
index 0000000000..a805ae2553
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-007.html
@@ -0,0 +1,26 @@
+<!doctype html>
+<html lang=en>
+ <meta charset=utf-8>
+ <title>CSS-UI test: outline-style: auto</title>
+ <link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+ <meta name=flags content="">
+ <meta name=assert content="outline-style:auto allows the UA to display any outline it wants, but it must display something.">
+ <link rel="mismatch" href="reference/outline-007-ref.html">
+ <link rel=help href="https://drafts.csswg.org/css-ui-3/#outline-props">
+<style>
+div {
+ width: 100px;
+ height: 100px;
+ outline-style: auto;
+
+ /* These values may be ignored by the UA, but just in case they are not,
+ set them to something that does not result in the outline being invisible */
+ outline-width: 5px;
+ outline-color: green;
+}
+
+</style>
+
+ <p>Test passes if there is an outlined box below. The outline may be any shape or color so long as it is visible.</p>
+ <div></div>
+
diff --git a/testing/web-platform/tests/css/css-ui/outline-008.html b/testing/web-platform/tests/css/css-ui/outline-008.html
new file mode 100644
index 0000000000..61489472a8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-008.html
@@ -0,0 +1,41 @@
+<!doctype html>
+<html lang=en>
+ <meta charset=utf-8>
+ <title>CSS-UI test: computed values ouf outline-width</title>
+ <link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+ <meta name=flags content="">
+ <meta name=assert content="outline-width values compute to absolute lengths">
+ <link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+ <link rel=help href="https://drafts.csswg.org/css-ui-3/#outline-props">
+<style>
+body > div {
+ width: 100px;
+ height: 100px;
+ background: red;
+
+ font-size: 10px;
+
+ /* stacking of outlines is undefined, so we cannot reliably to have an outline hide another outline.
+ We are using a border instead,
+ but still need to create an (invisible) outline to make sure that outline-width does not compute to 0. */
+ outline: solid 1em transparent;
+ border: solid 1em red;
+ margin-left: -10px;
+ margin-top: -10px;
+
+}
+div > div {
+ width: 100px;
+ height: 100px;
+ background: green;
+
+ font-size: 5px;
+ outline-width: inherit;
+ outline-style: solid;
+ outline-color: white;
+}
+</style>
+
+ <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+ <div><div></div></div>
+
diff --git a/testing/web-platform/tests/css/css-ui/outline-009.html b/testing/web-platform/tests/css/css-ui/outline-009.html
new file mode 100644
index 0000000000..70021b1c47
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-009.html
@@ -0,0 +1,29 @@
+<!doctype html>
+<html lang=en>
+ <meta charset=utf-8>
+ <title>CSS-UI test: computed values ouf outline-width when outline-style is none</title>
+ <link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+ <meta name=flags content="">
+ <meta name=assert content="outline-width computes to 0 when outline-style is none">
+ <link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+ <link rel=help href="https://drafts.csswg.org/css-ui-3/#outline-props">
+<style>
+body {
+ outline-width: 10px;
+ outline-style: none;
+
+}
+div {
+ width: 100px;
+ height: 100px;
+ background: green;
+
+ outline-width: inherit;
+ outline-style: solid;
+ outline-color: red;
+}
+</style>
+
+ <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+ <div></div>
+
diff --git a/testing/web-platform/tests/css/css-ui/outline-010.html b/testing/web-platform/tests/css/css-ui/outline-010.html
new file mode 100644
index 0000000000..a33f666f23
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-010.html
@@ -0,0 +1,41 @@
+<!doctype html>
+<html lang=en>
+ <meta charset=utf-8>
+ <title>CSS-UI test: computed values ouf outline-width</title>
+ <link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+ <meta name=flags content="">
+ <meta name=assert content="outline-offset values compute to absolute lengths">
+ <link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+ <link rel=help href="https://drafts.csswg.org/css-ui-3/#outline-props">
+<style>
+body > div {
+ width: 100px;
+ height: 100px;
+
+ font-size: 10px;
+
+ /* stacking of outlines is undefined, so we cannot reliably to have an outline hide another outline.
+ We are using a border instead,
+ but still need to create an (invisible) outline to make sure that outline-offset does not compute to 0. */
+ outline: solid 5px transparent;
+ outline-offset: 1em;
+ padding: 10px;
+ border: solid 5px red;
+ margin-left: -15px;
+ margin-top: -15px;
+
+}
+div > div {
+ width: 100px;
+ height: 100px;
+ background: green;
+
+ outline: solid 5px white;
+ font-size: 5px;
+ outline-offset: inherit;
+}
+</style>
+
+ <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+ <div><div></div></div>
+
diff --git a/testing/web-platform/tests/css/css-ui/outline-011.html b/testing/web-platform/tests/css/css-ui/outline-011.html
new file mode 100644
index 0000000000..963d751959
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-011.html
@@ -0,0 +1,29 @@
+<!doctype html>
+<html lang=en>
+ <meta charset=utf-8>
+ <title>CSS-UI test: outline-color: currentcolor</title>
+ <link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+ <meta name=flags content="">
+ <meta name=assert content="currentcolor computes to currentcolor on outline-color">
+ <link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+ <link rel=help href="https://drafts.csswg.org/css-ui-3/#outline-props">
+<style>
+body > div {
+ width: 100px;
+ height: 100px;
+ background: red;
+ color: red;
+ display: table-cell; /* Make a BFC */
+}
+div > div {
+ width: 0;
+ height: 0;
+ margin: 50px;
+ color: green;
+ outline: solid currentcolor 50px;
+}
+</style>
+
+ <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+ <div><div></div></div>
+
diff --git a/testing/web-platform/tests/css/css-ui/outline-012.html b/testing/web-platform/tests/css/css-ui/outline-012.html
new file mode 100644
index 0000000000..286c6c09d6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-012.html
@@ -0,0 +1,22 @@
+<!doctype html>
+<html lang=en>
+ <meta charset=utf-8>
+ <title>CSS-UI test: outline-offset width negative values</title>
+ <link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+ <meta name=flags content="">
+ <meta name=assert content="Negative values on outline-offset must cause the outline to shrink into the border box.">
+ <link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+ <link rel=help href="https://drafts.csswg.org/css-ui-3/#outline-props">
+<style>
+div {
+ width: 100px;
+ height: 100px;
+ background: red;
+ outline: solid 50px green;
+ outline-offset: -50px;
+}
+</style>
+
+ <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+ <div></div>
+
diff --git a/testing/web-platform/tests/css/css-ui/outline-013.html b/testing/web-platform/tests/css/css-ui/outline-013.html
new file mode 100644
index 0000000000..4b898a3e18
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-013.html
@@ -0,0 +1,22 @@
+<!doctype html>
+<html lang=en>
+ <meta charset=utf-8>
+ <title>CSS-UI test: outline-offset width negative values</title>
+ <link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+ <meta name=flags content="should">
+ <meta name=assert content="Negative values on outline-offset should not cause the height and the width of outside of the shape drawn by the outline to become smaller than twice the computed value of the outline-width property">
+ <link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+ <link rel=help href="https://drafts.csswg.org/css-ui-3/#outline-props">
+<style>
+div {
+ width: 100px;
+ height: 100px;
+ background: red;
+ outline: solid 50px green;
+ outline-offset: -150px;
+}
+</style>
+
+ <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+ <div></div>
+
diff --git a/testing/web-platform/tests/css/css-ui/outline-014.html b/testing/web-platform/tests/css/css-ui/outline-014.html
new file mode 100644
index 0000000000..b78090439e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-014.html
@@ -0,0 +1,26 @@
+<!doctype html>
+<html lang=en>
+ <meta charset=utf-8>
+ <title>CSS-UI test: outline-offset width negative values — long box</title>
+ <link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+ <meta name=flags content="should">
+ <meta name=assert content="Negative values on outline-offset should not cause the height and the width of outside of the shape drawn by the outline to become smaller than twice the computed value of the outline-width property, applying this constrain independenly in each direction.">
+ <link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+ <link rel=help href="https://drafts.csswg.org/css-ui-3/#outline-props">
+<style>
+div {
+ width: 100px;
+ height: 100px;
+ /* The borders makes the box rectangular rather than square */
+ border-right: solid white 50px;
+ border-left: solid white 50px;
+ background: red;
+ outline: solid 50px green;
+ outline-offset: -100px;
+ margin-left: -50px;
+}
+</style>
+
+ <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+ <div></div>
+
diff --git a/testing/web-platform/tests/css/css-ui/outline-015.html b/testing/web-platform/tests/css/css-ui/outline-015.html
new file mode 100644
index 0000000000..61b49684cb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-015.html
@@ -0,0 +1,26 @@
+<!doctype html>
+<html lang=en>
+ <meta charset=utf-8>
+ <title>CSS-UI test: outline-offset width negative values — long box</title>
+ <link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+ <meta name=flags content="should">
+ <meta name=assert content="Negative values on outline-offset should not cause the height and the width of outside of the shape drawn by the outline to become smaller than twice the computed value of the outline-width property, applying this constrain independenly in each direction.">
+ <link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+ <link rel=help href="https://drafts.csswg.org/css-ui-3/#outline-props">
+<style>
+div {
+ width: 100px;
+ height: 100px;
+ /* The borders makes the box rectangular rather than square */
+ border-top: solid white 50px;
+ border-bottom: solid white 50px;
+ background: red;
+ outline: solid 50px green;
+ outline-offset: -100px;
+ margin-top: -50px;
+}
+</style>
+
+ <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+ <div></div>
+
diff --git a/testing/web-platform/tests/css/css-ui/outline-016.html b/testing/web-platform/tests/css/css-ui/outline-016.html
new file mode 100644
index 0000000000..e3ca388f7e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-016.html
@@ -0,0 +1,35 @@
+<!doctype html>
+<html lang=en>
+ <meta charset=utf-8>
+ <title>CSS-UI test: outline-offset width negative values — long box</title>
+ <link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+ <meta name=flags content="should">
+ <meta name=assert content="Negative values on outline-offset should not cause the height and the width of outside of the shape drawn by the outline to become smaller than twice the computed value of the outline-width property, applying this constrain separately for each shape if there are several shapes.">
+ <link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+ <link rel=help href="https://drafts.csswg.org/css-ui-3/#outline-props">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+span {
+ outline: solid green 25px;
+ outline-offset: -35px; /* Any value that makes sure the outlines collide ( < -25px )
+ would make the test valid,
+ -35px is just one such value that happens to make the failures pretty.
+ I recommend looking at this test in as many UAs as possible,
+ the results are quite astonishing.
+ */
+ color: red;
+}
+div {
+ width: 50px;
+ height: 50px;
+ padding: 25px;
+ background: green;
+ line-height: 25px;
+ font-size: 25px;
+ font-family: Ahem;
+}
+</style>
+
+ <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+ <div><span>xx<br>xx</span></div>
+
diff --git a/testing/web-platform/tests/css/css-ui/outline-017.html b/testing/web-platform/tests/css/css-ui/outline-017.html
new file mode 100644
index 0000000000..d3a350d2a8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-017.html
@@ -0,0 +1,55 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: interpolable outline-* properties animation</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#propdef-outline-style">
+<link rel="help" href="https://www.w3.org/TR/web-animations-1/#dom-animatable-animate">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+@keyframes outline-anim {
+ from {
+ outline: solid 1px rgba(1, 0, 0, 0.5);
+ outline-offset: 1px;
+ }
+ to {
+ outline: solid 3px rgba(3, 0, 0, 0.5);
+ outline-offset: 3px;
+ }
+}
+
+#test {
+ animation: outline-anim 3s -1.5s paused linear;
+ outline: solid 1px rgba(1, 0, 0, 0.5);
+ outline-offset: 1px;
+}
+</style>
+<body>
+ <div id="test"></div>
+ <div id=log></div>
+
+ <script>
+ // outline being a render-only property, its animation can be done off the main thread
+ // checking the values after the first paint is safer, hence requestAnimationFrame
+ setup({explicit_done:true});
+ requestAnimationFrame(function() {
+ // synchronous tests being run during the page's first paint
+ test(
+ function(){
+ var test = document.getElementById("test");
+ assert_equals(getComputedStyle(test).outlineColor, 'rgba(2, 0, 0, 0.5)');
+ }, "outline-color is animated as a color");
+ test(
+ function(){
+ var test = document.getElementById("test");
+ assert_equals(getComputedStyle(test).outlineWidth, '2px');
+ }, "outline-width is animated as a length");
+ test(
+ function(){
+ var test = document.getElementById("test");
+ assert_equals(getComputedStyle(test).outlineOffset, '2px');
+ }, "outline-offset is animated as a length");
+ done();
+ });
+</script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/outline-018.html b/testing/web-platform/tests/css/css-ui/outline-018.html
new file mode 100644
index 0000000000..c2db6f9971
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-018.html
@@ -0,0 +1,61 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: non interpolable outline-style animation</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#propdef-outline-style">
+<link rel="help" href="https://www.w3.org/TR/web-animations-1/#dom-animatable-animate">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+@keyframes outline-anim {
+ from {
+ outline: solid 1px black;
+ }
+ to {
+ outline: dotted 1px black;
+ }
+}
+
+#test1 {
+ animation: outline-anim 3s 0s paused linear;
+ outline: solid 1px black;
+}
+#test2 {
+ animation: outline-anim 3s -1s paused linear;
+ outline: solid 1px black;
+}
+#test3 {
+ animation: outline-anim 3s -2s paused linear;
+ outline: solid 1px black;
+}
+#test4 {
+ animation: outline-anim 3s 0s paused reverse linear;
+ outline: solid 1px black;
+}
+</style>
+<body>
+ <div id="test1"></div>
+ <div id="test2"></div>
+ <div id="test3"></div>
+ <div id="test4"></div>
+ <div id=log></div>
+
+ <script>
+ // outline being a render-only property, its animation can be done off the main thread
+ // checking the values after the first paint is safer, hence requestAnimationFrame
+ setup({explicit_done:true});
+ requestAnimationFrame(function() {
+ // synchronous tests being run during the page's first paint
+ test(
+ function(){
+ var tests = document.querySelectorAll("div[id^='test']");
+ assert_equals(getComputedStyle(tests[0]).outlineStyle, 'solid');
+ assert_equals(getComputedStyle(tests[1]).outlineStyle, 'solid');
+ assert_equals(getComputedStyle(tests[2]).outlineStyle, 'dotted');
+ assert_equals(getComputedStyle(tests[3]).outlineStyle, 'dotted');
+ }, "outline-style is animated as a discrete type"
+ );
+ done();
+ });
+</script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/outline-019.html b/testing/web-platform/tests/css/css-ui/outline-019.html
new file mode 100644
index 0000000000..3687bf791c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-019.html
@@ -0,0 +1,31 @@
+<!doctype html>
+<html lang=en>
+ <meta charset=utf-8>
+ <title>CSS-UI test: outline currentColor inheritance</title>
+ <link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net">
+ <meta name=flags content="">
+ <meta name=assert content="currentColor is inherited as a keyword">
+ <link rel=help href="https://drafts.csswg.org/css-ui-3/#outline-props">
+ <link rel=help href="https://drafts.csswg.org/css-color-4/#resolving-color-values">
+ <link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+<style>
+body > div {
+ color: red;
+ outline-color: currentcolor;
+ display: table-cell; /*BFC*/
+}
+
+div > div {
+ width: 0; height: 0;
+ margin-left: 50px;
+ margin-top: 50px;
+ color: green;
+ outline-color: inherit;
+ outline-width: 50px;
+ outline-style: solid;
+}
+</style>
+
+ <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+ <div><div></div></div>
+
diff --git a/testing/web-platform/tests/css/css-ui/outline-020.html b/testing/web-platform/tests/css/css-ui/outline-020.html
new file mode 100644
index 0000000000..457f10ad65
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-020.html
@@ -0,0 +1,23 @@
+<!doctype html>
+<html lang=en>
+ <meta charset=utf-8>
+ <title>CSS-UI test: outline block with outline inline</title>
+ <link rel="author" title="Aleks Totic <atotic@chromium.org>" href="atotic@">
+ <meta name=assert content="">
+ <link rel=help href="https://drafts.csswg.org/css-ui-3/#outline-props">
+ <link rel="match" href="./reference/outline-020-ref.html">
+<style>
+#container {
+ outline: green solid 5px;
+ width: 100px;
+ height: 30px;
+ padding: 5px;
+}
+#target {
+ outline: blue solid 5px;
+}
+</style>
+
+ <p>Test passes if blue outline touches top left of green outline.</p>
+ <div id="container"><span id="target">x</span></div>
+
diff --git a/testing/web-platform/tests/css/css-ui/outline-021.html b/testing/web-platform/tests/css/css-ui/outline-021.html
new file mode 100644
index 0000000000..02e96ea9a6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-021.html
@@ -0,0 +1,9 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>CSS-UI test: outline works on button inputs</title>
+<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
+<link rel="author" title="Mozilla" href="https://mozilla.org">
+<link rel=help href="https://drafts.csswg.org/css-ui/#outline-props">
+<link rel="mismatch" href="./reference/outline-021-notref.html">
+
+<input type="submit" style="outline: 10px solid blue">
diff --git a/testing/web-platform/tests/css/css-ui/outline-022.html b/testing/web-platform/tests/css/css-ui/outline-022.html
new file mode 100644
index 0000000000..5da549691e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-022.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<title>CSS-UI test: outline works on nested spans</title>
+<link rel="author" href="mailto:atotic@google.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui/#outline-props">
+<link rel="match" href="../reference/ref-filled-green-100px-square-only.html">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+body {
+ --outline-width: 10px;
+ --square-width: 80px;
+}
+#container {
+ width: var(--square-width);
+ padding: var(--outline-width);
+}
+#target {
+ font-family: Ahem;
+ font-size: var(--square-width);
+ outline: solid var(--outline-width) green;
+ color: green;
+}
+</style>
+<p>Test passes if there is a filled green square.</p>
+<div id="container">
+ <span>
+ <span>
+ <span id="target">x</span>
+ </span>
+ </span>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/outline-023.html b/testing/web-platform/tests/css/css-ui/outline-023.html
new file mode 100644
index 0000000000..a6f35351ce
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-023.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html>
+<title>Tests that a paint clip, clips an outline.</title>
+<link rel="match" href="../reference/ref-filled-green-100px-square-only.html">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#outline">
+<link rel="help" href="https://www.w3.org/TR/CSS2/zindex.html#painting-order">
+<p>Test passes if there is a filled green square.</p>
+<div style="overflow: hidden; width: 100px; height: 100px; background: green;">
+ <div style="display: block; width: 110px; height: 110px; margin: -5px; outline: solid blue 3px;"></div>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/outline-024.html b/testing/web-platform/tests/css/css-ui/outline-024.html
new file mode 100644
index 0000000000..38742d8203
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-024.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface: outline with padding</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui/#outline-props">
+<link rel="match" href="reference/outline-024-ref.html">
+<meta name="assert" content="Test checks that 'auto' outline works as expected in an element with padding and overflowing inline block descendant.">
+<meta name="flags" content="ahem">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<p>Test passes if the outline is wrapping all the green boxes.</p>
+<div style="width: 50px; height: 50px; padding: 10px; outline: auto;">
+ <div style="display: inline-block; font: 50px/1 Ahem; color: green;">XX</div>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/outline-025.html b/testing/web-platform/tests/css/css-ui/outline-025.html
new file mode 100644
index 0000000000..dc679054e1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-025.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface: outline with padding</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui/#outline-props">
+<link rel="match" href="reference/outline-024-ref.html">
+<meta name="assert" content="Test checks that 'auto' outline works as expected in an element with padding and overflowing inline descendant.">
+<meta name="flags" content="ahem">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<p>Test passes if the outline is wrapping all the green boxes.</p>
+<div style="width: 50px; height: 50px; padding: 10px; outline: auto;">
+ <div style="display: inline; font: 50px/1 Ahem; color: green;">XX</div>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/outline-026.html b/testing/web-platform/tests/css/css-ui/outline-026.html
new file mode 100644
index 0000000000..94aa415e74
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-026.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface: outline with padding</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui/#outline-props">
+<link rel="match" href="reference/outline-024-ref.html">
+<meta name="assert" content="Test checks that 'auto' outline works as expected in an element with padding and overflowing SPAN descendant.">
+<meta name="flags" content="ahem">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<p>Test passes if the outline is wrapping all the green boxes.</p>
+<div style="width: 50px; height: 50px; padding: 10px; outline: auto;">
+ <span style="font: 50px/1 Ahem; color: green;">XX</span>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/outline-027.html b/testing/web-platform/tests/css/css-ui/outline-027.html
new file mode 100644
index 0000000000..e5ffc7527f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-027.html
@@ -0,0 +1,171 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface: outline with padding</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui/#outline-props">
+<link rel="match" href="reference/outline-027-ref.html">
+<meta name="assert" content="Test checks that 'auto' outline works as expected in an element with different paddings and inline descendant.">
+<meta name="flags" content="ahem">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+.outline-container {
+ margin: 10px 0px;
+ width: 10px;
+ height: 10px;
+ outline: auto;
+ font: 10px/1 Ahem;
+}
+
+.outline-container > span > div {
+ color: lime;
+}
+
+.inline-block-text > .outline-container > span > div {
+ display: inline-block;
+}
+
+.inline-text > .outline-container > span > div {
+ display: inline;
+}
+</style>
+<p>Test passes if the outline is wrapping all the green boxes.</p>
+<div style="display: grid; grid-template-columns: repeat(6, 100px);">
+ <div>
+ <div class="outline-container" style="padding-left: 5px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding-right: 5px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding-top: 5px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding-bottom: 5px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding: 0px 5px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding: 5px 0px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding: 5px;">
+ <span><div>XX</div></span>
+ </div>
+ </div>
+ <div>
+ <div class="outline-container" style="padding-left: 20px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding-right: 20px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding-top: 20px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding-bottom: 20px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding: 0px 20px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding: 20px 0px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding: 20px;">
+ <span><div>XX</div></span>
+ </div>
+ </div>
+ <div class="inline-block-text">
+ <div class="outline-container" style="padding-left: 5px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding-right: 5px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding-top: 5px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding-bottom: 5px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding: 0px 5px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding: 5px 0px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding: 5px;">
+ <span><div>XX</div></span>
+ </div>
+ </div>
+ <div class="inline-block-text">
+ <div class="outline-container" style="padding-left: 20px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding-right: 20px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding-top: 20px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding-bottom: 20px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding: 0px 20px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding: 20px 0px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding: 20px;">
+ <span><div>XX</div></span>
+ </div>
+ </div>
+ <div class="inline-text">
+ <div class="outline-container" style="padding-left: 5px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding-right: 5px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding-top: 5px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding-bottom: 5px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding: 0px 5px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding: 5px 0px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding: 5px;">
+ <span><div>XX</div></span>
+ </div>
+ </div>
+ <div class="inline-text">
+ <div class="outline-container" style="padding-left: 20px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding-right: 20px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding-top: 20px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding-bottom: 20px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding: 0px 20px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding: 20px 0px;">
+ <span><div>XX</div></span>
+ </div>
+ <div class="outline-container" style="padding: 20px;">
+ <span><div>XX</div></span>
+ </div>
+ </div>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/outline-028.html b/testing/web-platform/tests/css/css-ui/outline-028.html
new file mode 100644
index 0000000000..416947d16d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-028.html
@@ -0,0 +1,165 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface: outline with floatted descendants</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui/#outline-props">
+<link rel="match" href="reference/outline-028-ref.html">
+<meta name="assert" content="Test checks that 'auto' outline works as expected in an element with floatted descendants with different margins and paddings.">
+<meta name="flags" content="ahem">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+.outline-container {
+ width: max-content;
+ margin: 30px 0px;
+ outline: auto;
+ font: 10px/1 Ahem;
+}
+
+.float {
+ float: left;
+ color: lime;
+}
+
+span {
+ color: lime;
+}
+</style>
+<p>Test passes if the outline is wrapping all the green boxes.</p>
+<div style="display: grid; grid-template-columns: repeat(4, 100px);">
+ <div>
+ <div class="outline-container">
+ <div class="float">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="margin-left: 5px;">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="margin-right: 5px;">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="margin-top: 5px;">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="margin-bottom: 5px;">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="margin: 0px 5px;">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="margin: 5px 0px;">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="margin: 5px;">X</div>
+ <span>X</span>
+ </div>
+ </div>
+ <div>
+ <div class="outline-container">
+ <div class="float">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="margin-left: 20px;">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="margin-right: 20px;">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="margin-top: 20px;">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="margin-bottom: 20px;">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="margin: 0px 20px;">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="margin: 20px 0px;">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="margin: 20px;">X</div>
+ <span>X</span>
+ </div>
+ </div>
+ <div>
+ <div class="outline-container">
+ <div class="float">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="padding-left: 5px;">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="padding-right: 5px;">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="padding-top: 5px;">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="padding-bottom: 5px;">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="padding: 0px 5px;">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="padding: 5px 0px;">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="padding: 5px;">X</div>
+ <span>X</span>
+ </div>
+ </div>
+ <div>
+ <div class="outline-container">
+ <div class="float">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="padding-left: 20px;">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="padding-right: 20px;">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="padding-top: 20px;">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="padding-bottom: 20px;">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="padding: 0px 20px;">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="padding: 20px 0px;">X</div>
+ <span>X</span>
+ </div>
+ <div class="outline-container">
+ <div class="float" style="padding: 20px;">X</div>
+ <span>X</span>
+ </div>
+ </div>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/outline-auto-dynamic-change-ref.html b/testing/web-platform/tests/css/css-ui/outline-auto-dynamic-change-ref.html
new file mode 100644
index 0000000000..9128eae260
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-auto-dynamic-change-ref.html
@@ -0,0 +1,16 @@
+<!doctype html>
+<title>CSS Test Reference</title>
+<style>
+div {
+ position: absolute;
+ top: 10px;
+ left: 10px;
+ width: 100px;
+ height: 100px;
+ outline-width: 0;
+ outline-offset: 5px;
+ outline-color: black;
+ outline-style: auto;
+}
+</style>
+<div></div>
diff --git a/testing/web-platform/tests/css/css-ui/outline-auto-dynamic-change.html b/testing/web-platform/tests/css/css-ui/outline-auto-dynamic-change.html
new file mode 100644
index 0000000000..f58a14abe7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-auto-dynamic-change.html
@@ -0,0 +1,29 @@
+<!doctype html>
+<html class="reftest-wait">
+<meta charset="utf-8">
+<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
+<link rel="author" href="https://mozilla.org" title="Mozilla">
+<link rel="help" href="https://drafts.csswg.org/css-ui/#outline-style">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1759749">
+<link rel="match" href="outline-auto-dynamic-change-ref.html">
+<title>Dynamic change to outline-style: auto works even if effective outline-width is zero</title>
+<style>
+div {
+ position: absolute;
+ top: 10px;
+ left: 10px;
+ width: 100px;
+ height: 100px;
+ outline-width: 0;
+ outline-offset: 5px;
+ outline-color: black;
+ outline-style: none;
+}
+</style>
+<div></div>
+<script>
+document.addEventListener("TestRendered", function() {
+ document.querySelector("div").style.outlineStyle = "auto";
+ document.documentElement.className = "";
+});
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/outline-color-001.html b/testing/web-platform/tests/css/css-ui/outline-color-001.html
new file mode 100644
index 0000000000..82824e47bf
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-color-001.html
@@ -0,0 +1,45 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: outline-color - inherit (basic) </title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<link rel="help" title="7.4. 'outline-color' property" href="http://www.w3.org/TR/css3-ui/#outline-color">
+<link rel="author" title="Shiyou Tan" href="mailto:shiyoux.tan@intel.com">
+<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+<meta name="assert" content="Test checks that the color of sub element outline is same as the color of parent element outline when outline-color set inherit">
+<style>
+ #container {
+ background-color: red;
+ height: 100px;
+ width: 100px;
+ }
+ #parent {
+ background-color: red;
+ height: 80px;
+ left: 10px;
+ outline-color: green;
+ outline-style: solid;
+ outline-width: 10px;
+ position: relative;
+ top: 10px;
+ width: 80px;
+ }
+ #child {
+ background-color: green;
+ height: 60px;
+ left: 10px;
+ outline-color: inherit;
+ outline-style: solid;
+ outline-width: 10px;
+ position: relative;
+ top: 10px;
+ width: 60px;
+ }
+</style>
+<body>
+ <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+ <div id="container">
+ <div id="parent">
+ <div id="child"></div>
+ </div>
+ </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/outline-negative-offset-composited-scroll.html b/testing/web-platform/tests/css/css-ui/outline-negative-offset-composited-scroll.html
new file mode 100644
index 0000000000..4abde0e804
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-negative-offset-composited-scroll.html
@@ -0,0 +1,24 @@
+<!doctype html>
+<title>CSS-UI test: outline-offset width negative values on scroller</title>
+<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+<link rel=help href="https://drafts.csswg.org/css-ui-3/#outline-props">
+<style>
+#container {
+ width: 100px;
+ height: 100px;
+ background: red;
+ will-change: transform;
+ overflow: scroll;
+ outline: solid 50px green;
+ outline-offset: -50px;
+}
+#child {
+ position: relative;
+ will-change: transform;
+ height: 1000px;
+}
+</style>
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+<div id="container">
+ <div id="child"></div>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/outline-offset-001.html b/testing/web-platform/tests/css/css-ui/outline-offset-001.html
new file mode 100644
index 0000000000..8f82eb6480
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-offset-001.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: outline-offset - length (basic)</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<link rel="help" title="7.5. 'outline-offset' property" href="http://www.w3.org/TR/css3-ui/#outline-offset">
+<link rel="author" title="Shiyou Tan" href="mailto:shiyoux.tan@intel.com">
+<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+<meta name="assert" content="Test checks that the outline-offset keeps spacing between outline and element content">
+<style>
+ #container {
+ background-color: green;
+ border: 20px red solid;
+ height: 60px;
+ width: 60px;
+ }
+ #test {
+ background-color: green;
+ height: 20px;
+ left: 20px;
+ outline: 20px green solid;
+ outline-offset: 20px;
+ position: relative;
+ top: 20px;
+ width: 20px;
+ }
+</style>
+<body>
+ <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+ <div id="container">
+ <div id="test"></div>
+ </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/outline-offset-table-001-notref.html b/testing/web-platform/tests/css/css-ui/outline-offset-table-001-notref.html
new file mode 100644
index 0000000000..aafa2b053c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-offset-table-001-notref.html
@@ -0,0 +1,11 @@
+<!doctype html>
+<title>CSS Rest Reference</title>
+<style>
+table {
+ outline: 1px solid blue;
+ outline-offset: 10px;
+}
+</style>
+<table>
+ Some content
+</table>
diff --git a/testing/web-platform/tests/css/css-ui/outline-offset-table-001.html b/testing/web-platform/tests/css/css-ui/outline-offset-table-001.html
new file mode 100644
index 0000000000..4b6f46949b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-offset-table-001.html
@@ -0,0 +1,13 @@
+<!doctype html>
+<title>outline-offset applies to tables</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui/#propdef-outline">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1603049">
+<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
+<link rel="author" href="https://mozilla.org" title="Mozilla">
+<link rel="mismatch" href="outline-offset-table-001-notref.html">
+<style>
+table { outline: 1px solid blue }
+</style>
+<table>
+ Some content
+</table>
diff --git a/testing/web-platform/tests/css/css-ui/outline-offset.html b/testing/web-platform/tests/css/css-ui/outline-offset.html
new file mode 100644
index 0000000000..5dee28e3b4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-offset.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>ttwf-reftest-outline-offset-ref</title>
+ <link rel="author" title="jy-jeung" href="mailto:kein119@naver.com">
+ <link rel="help" href="http://www.w3.org/TR/css3-ui/#outline-offset">
+ <link rel="match" href="reference/outline-offset.html">
+ <style type="text/css">
+ div
+ {
+ display:inline-block;
+ outline:2px solid red;
+ }
+ div span
+ {
+ display:block;
+ width:180px;
+ margin:10px;
+ height:80px;
+ border:2px solid green;
+ }
+ </style>
+</head>
+<body>
+ <p>PASS if there a space between the border.</p>
+ <div>
+ <span></span>
+ </div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/outline-style-011.html b/testing/web-platform/tests/css/css-ui/outline-style-011.html
new file mode 100644
index 0000000000..a4981ed161
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-style-011.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: outline-style - dotted (basic)</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<link rel="author" title="Shiyou Tan" href="mailto:shiyoux.tan@intel.com">
+<link rel="help" title="7.3. 'outline-style' property" href="http://www.w3.org/TR/css3-ui/#outline-style">
+<link rel="help" href="http://www.w3.org/TR/CSS21/box.html#value-def-border-style">
+<link rel="match" href="reference/outline-style-011-ref.html">
+<meta name="assert" content="Test checks that the outline style is dotted when outline-style set dotted">
+<style>
+ #test {
+ height: 100px;
+ margin: 30px;
+ outline-color: green;
+ outline-style: dotted;
+ outline-width: 4px;
+ width: 100px;
+ }
+</style>
+<body>
+ <p>Test passes if there is a blank square with <strong>a green dotted</strong> border.</p>
+ <div id="test"></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/outline-style-012.html b/testing/web-platform/tests/css/css-ui/outline-style-012.html
new file mode 100644
index 0000000000..30b7f95548
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-style-012.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: outline-style - inherit (basic)</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<link rel="author" title="Shiyou Tan" href="mailto:shiyoux.tan@intel.com">
+<link rel="help" title="7.3. 'outline-style' property" href="http://www.w3.org/TR/css3-ui/#outline-style">
+<link rel="help" href="http://www.w3.org/TR/CSS21/box.html#value-def-border-style">
+<link rel="match" href="reference/outline-style-012-ref.html">
+<meta name="assert" content="Test checks that the sub element outline style is same as parent element outline style when outline-style set inherit">
+<style>
+ #parent {
+ height: 110px;
+ margin: 30px;
+ outline-color: blue;
+ outline-style: dotted;
+ outline-width: 4px;
+ padding: 20px;
+ width: 110px;
+ }
+ #child {
+ height: 110px;
+ outline-color: green;
+ outline-style: inherit;
+ outline-width: 4px;
+ width: 110px;
+ }
+</style>
+<body>
+ <p>Test passes if there is a blank square with <strong>a green dotted</strong> border centered inside a blue dotted border.</p>
+ <div id="parent">
+ <div id="child"></div>
+ </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/outline-style-013.html b/testing/web-platform/tests/css/css-ui/outline-style-013.html
new file mode 100644
index 0000000000..3df338f99d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-style-013.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: outline-style - dashed (basic)</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<link rel="author" title="Shiyou Tan" href="mailto:shiyoux.tan@intel.com">
+<link rel="help" title="7.3. 'outline-style' property" href="http://www.w3.org/TR/css3-ui/#outline-style">
+<link rel="help" href="http://www.w3.org/TR/CSS21/box.html#value-def-border-style">
+<link rel="match" href="reference/outline-style-013-ref.html">
+<meta name="assert" content="Test checks that the outline style is dashed when outline-style set dashed">
+<style>
+ #test {
+ height: 150px;
+ margin: 30px;
+ outline-color: green;
+ outline-style: dashed;
+ outline-width: 2px;
+ width: 150px;
+ }
+</style>
+<body>
+ <p>Test passes if there is a blank square whose border is <strong>green dashed</strong>.</p>
+ <div id="test"></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/outline-style-014.html b/testing/web-platform/tests/css/css-ui/outline-style-014.html
new file mode 100644
index 0000000000..52440db87d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-style-014.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: outline-style - double (basic)</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<link rel="author" title="Shiyou Tan" href="mailto:shiyoux.tan@intel.com">
+<link rel="help" title="7.3. 'outline-style' property" href="http://www.w3.org/TR/css3-ui/#outline-style">
+<link rel="help" href="http://www.w3.org/TR/CSS21/box.html#value-def-border-style">
+<link rel="match" href="reference/outline-style-014-ref.html">
+<meta name="assert" content="Test checks that the outline style is two solid lines when outline-style set double">
+<style>
+ #test {
+ height: 150px;
+ margin: 30px;
+ outline-color: green;
+ outline-style: double;
+ outline-width: 4px;
+ width: 150px;
+ }
+</style>
+<body>
+ <p>Test passes if there is a blank square whose border is <strong>two green solid lines</strong>.</p>
+ <div id="test"></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/outline-style-inherit-ref.html b/testing/web-platform/tests/css/css-ui/outline-style-inherit-ref.html
new file mode 100644
index 0000000000..e66e037ed0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-style-inherit-ref.html
@@ -0,0 +1,7 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>CSS Test Reference</title>
+<style>
+ div { width: 100px; height: 100px }
+</style>
+<div style="outline-style: solid; outline-color: green"></div>
diff --git a/testing/web-platform/tests/css/css-ui/outline-style-inherit.html b/testing/web-platform/tests/css/css-ui/outline-style-inherit.html
new file mode 100644
index 0000000000..7a82bc790f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-style-inherit.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>Inheriting outline-style should compute the right outline-width</title>
+<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
+<link rel="author" title="Mozilla" href="https://mozilla.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#outline-width">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#outline-style">
+<link rel="match" href="outline-style-inherit-ref.html">
+<style>
+ div { width: 100px; height: 100px }
+</style>
+<div style="outline-style: solid; outline-color: transparent">
+ <div style="outline-style: inherit; outline-color: green"></div>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/outline-with-001-crash.html b/testing/web-platform/tests/css/css-ui/outline-with-001-crash.html
new file mode 100644
index 0000000000..d46ba8080c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-with-001-crash.html
@@ -0,0 +1,5 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: outline-width very big value</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-ui/#outline-width">
+<div style="outline: solid black 100000000000000000px;"></div>
diff --git a/testing/web-platform/tests/css/css-ui/outline-with-padding-001.html b/testing/web-platform/tests/css/css-ui/outline-with-padding-001.html
new file mode 100644
index 0000000000..716491ca25
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-with-padding-001.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<title>Outline with padding</title>
+<link rel="match" href="reference/outline-with-padding-001-ref.html">
+<link rel="help" href="https://drafts.csswg.org/css-ui/#outline-props">
+<link rel="help" href="https://crbug.com/1048070">
+<link rel="author" href="mailto:kojii@chromium.org">
+<meta name="assert" content="Tests the rendering of outline applied to a box with padding">
+<style>
+inline-block {
+ display: inline-block;
+ width: 65px;
+ color: transparent;
+ background: orange;
+}
+</style>
+<body>
+<div style="display: flex">
+ <span style="padding-left: 99px; outline: auto">
+ <span>
+ <inline-block>Previous</inline-block>
+ </span>
+ </span>
+</div>
+
+<div style="width: 50px; padding-left: 99px; outline: auto">
+ <span>
+ <inline-block>Previous</inline-block>
+ </span>
+</div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/box-sizing-computed.html b/testing/web-platform/tests/css/css-ui/parsing/box-sizing-computed.html
new file mode 100644
index 0000000000..9b7f1d1c42
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/box-sizing-computed.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: getComputedStyle().boxSizing</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<meta name="assert" content="box-sizing computed value is as specified.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+</head>
+<body>
+<div id="target"></div>
+<script>
+test_computed_value("box-sizing", "content-box");
+test_computed_value("box-sizing", "border-box");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/box-sizing-invalid.html b/testing/web-platform/tests/css/css-ui/parsing/box-sizing-invalid.html
new file mode 100644
index 0000000000..984475450a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/box-sizing-invalid.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: parsing box-sizing with invalid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<meta name="assert" content="box-sizing supports only the grammar 'content-box | border-box'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_invalid_value("box-sizing", "auto");
+test_invalid_value("box-sizing", "content-box border-box");
+test_invalid_value("box-sizing", "fill-box");
+test_invalid_value("box-sizing", "margin-box");
+test_invalid_value("box-sizing", "padding-box");
+test_invalid_value("box-sizing", "view-box");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/box-sizing-valid.html b/testing/web-platform/tests/css/css-ui/parsing/box-sizing-valid.html
new file mode 100644
index 0000000000..3dfa4f9794
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/box-sizing-valid.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: parsing box-sizing with valid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#box-sizing">
+<meta name="assert" content="box-sizing supports the full grammar 'content-box | border-box'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_valid_value("box-sizing", "content-box");
+test_valid_value("box-sizing", "border-box");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/caret-color-computed.html b/testing/web-platform/tests/css/css-ui/parsing/caret-color-computed.html
new file mode 100644
index 0000000000..0428c783f5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/caret-color-computed.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: getComputedStyle().caretColor</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#caret-color">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+<style>
+ #target {
+ color: blue;
+ }
+</style>
+</head>
+<body>
+<div id="target"></div>
+<script>
+'use strict';
+const currentColor = "rgb(0, 0, 255)";
+test_computed_value("caret-color", "auto", currentColor);
+test_computed_value("caret-color", "currentColor", currentColor);
+test_computed_value("caret-color", "red", "rgb(255, 0, 0)");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/caret-color-invalid.html b/testing/web-platform/tests/css/css-ui/parsing/caret-color-invalid.html
new file mode 100644
index 0000000000..a59b01ec2b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/caret-color-invalid.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: parsing caret-color with invalid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#caret-color">
+<meta name="assert" content="caret-color supports only the grammar 'auto | <color>'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_invalid_value("caret-color", "none");
+test_invalid_value("caret-color", "invert");
+test_invalid_value("caret-color", "50%");
+test_invalid_value("caret-color", "red green");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/caret-color-valid.html b/testing/web-platform/tests/css/css-ui/parsing/caret-color-valid.html
new file mode 100644
index 0000000000..dd35cf8e90
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/caret-color-valid.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: parsing caret-color with valid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#caret-color">
+<meta name="assert" content="caret-color supports the full grammar 'auto | <color>'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_valid_value("caret-color", "auto");
+test_valid_value("caret-color", "rgba(10, 20, 30, 0.4)");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/cursor-computed.html b/testing/web-platform/tests/css/css-ui/parsing/cursor-computed.html
new file mode 100644
index 0000000000..76b3201016
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/cursor-computed.html
@@ -0,0 +1,56 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: getComputedStyle().cursor</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#cursor">
+<meta name="assert" content="cursor computed value is as specified for keywords.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+</head>
+<body>
+<div id="target"></div>
+<script>
+test_computed_value("cursor", "auto");
+test_computed_value("cursor", "default");
+test_computed_value("cursor", "none");
+test_computed_value("cursor", "context-menu");
+test_computed_value("cursor", "help");
+test_computed_value("cursor", "pointer");
+test_computed_value("cursor", "progress");
+test_computed_value("cursor", "wait");
+test_computed_value("cursor", "cell");
+test_computed_value("cursor", "crosshair");
+test_computed_value("cursor", "text");
+test_computed_value("cursor", "vertical-text");
+test_computed_value("cursor", "alias");
+test_computed_value("cursor", "copy");
+test_computed_value("cursor", "move");
+test_computed_value("cursor", "no-drop");
+test_computed_value("cursor", "not-allowed");
+test_computed_value("cursor", "grab");
+test_computed_value("cursor", "grabbing");
+test_computed_value("cursor", "e-resize");
+test_computed_value("cursor", "n-resize");
+test_computed_value("cursor", "ne-resize");
+test_computed_value("cursor", "nw-resize");
+test_computed_value("cursor", "s-resize");
+test_computed_value("cursor", "se-resize");
+test_computed_value("cursor", "sw-resize");
+test_computed_value("cursor", "w-resize");
+test_computed_value("cursor", "ew-resize");
+test_computed_value("cursor", "ns-resize");
+test_computed_value("cursor", "nesw-resize");
+test_computed_value("cursor", "nwse-resize");
+test_computed_value("cursor", "col-resize");
+test_computed_value("cursor", "row-resize");
+test_computed_value("cursor", "all-scroll");
+test_computed_value("cursor", "zoom-in");
+test_computed_value("cursor", "zoom-out");
+
+// Not yet tested: // [ [<url> [<x> <y>]?,]*
+// "relative URLs converted to absolute"
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/cursor-invalid.html b/testing/web-platform/tests/css/css-ui/parsing/cursor-invalid.html
new file mode 100644
index 0000000000..b7928c85d3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/cursor-invalid.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: parsing cursor with invalid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#cursor">
+<meta name="assert" content="cursor supports only the grammar.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_invalid_value("cursor", "en-resize");
+test_invalid_value("cursor", 'url("https://example.com/") alias');
+test_invalid_value("cursor", '1 2 url("https://example.com/"), copy');
+test_invalid_value("cursor", 'url("https://example.com/"), url("https://example.com/") 3, move');
+
+test_invalid_value("cursor", 'url("https://example.com/") 1px 2px, copy');
+test_invalid_value("cursor", 'url("https://example.com/"), url("https://example.com/") 3% 4%, move');
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/cursor-valid.html b/testing/web-platform/tests/css/css-ui/parsing/cursor-valid.html
new file mode 100644
index 0000000000..a31a7aed51
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/cursor-valid.html
@@ -0,0 +1,108 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 4: parsing cursor with valid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#cursor">
+<meta name="assert" content="cursor supports the full required grammar.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_valid_value("cursor", "auto");
+test_valid_value("cursor", "default");
+test_valid_value("cursor", "none");
+test_valid_value("cursor", "context-menu");
+test_valid_value("cursor", "help");
+test_valid_value("cursor", "pointer");
+test_valid_value("cursor", "progress");
+test_valid_value("cursor", "wait");
+test_valid_value("cursor", "cell");
+test_valid_value("cursor", "crosshair");
+test_valid_value("cursor", "text");
+test_valid_value("cursor", "vertical-text");
+test_valid_value("cursor", "alias");
+test_valid_value("cursor", "copy");
+test_valid_value("cursor", "move");
+test_valid_value("cursor", "no-drop");
+test_valid_value("cursor", "not-allowed");
+test_valid_value("cursor", "grab");
+test_valid_value("cursor", "grabbing");
+test_valid_value("cursor", "e-resize");
+test_valid_value("cursor", "n-resize");
+test_valid_value("cursor", "ne-resize");
+test_valid_value("cursor", "nw-resize");
+test_valid_value("cursor", "s-resize");
+test_valid_value("cursor", "se-resize");
+test_valid_value("cursor", "sw-resize");
+test_valid_value("cursor", "w-resize");
+test_valid_value("cursor", "ew-resize");
+test_valid_value("cursor", "ns-resize");
+test_valid_value("cursor", "nesw-resize");
+test_valid_value("cursor", "nwse-resize");
+test_valid_value("cursor", "col-resize");
+test_valid_value("cursor", "row-resize");
+test_valid_value("cursor", "all-scroll");
+test_valid_value("cursor", "zoom-in");
+test_valid_value("cursor", "zoom-out");
+
+test_valid_value(
+ "cursor",
+ 'url("https://example.com/"), alias',
+ [
+ 'url("https://example.com/"), alias',
+ 'url(https://example.com/), alias'
+ ]
+);
+
+test_valid_value(
+ "cursor",
+ 'url("https://example.com/") 1 calc(2 + 0), copy',
+ [
+ 'url("https://example.com/") 1 calc(2), copy',
+ 'url("https://example.com/") 1 2, copy',
+ 'url(https://example.com/) 1 2, copy'
+ ]
+);
+
+test_valid_value(
+ "cursor",
+ 'url("https://example.com/"), url("https://example.com/") 3 -4, move',
+ [
+ 'url("https://example.com/"), url("https://example.com/") 3 -4, move',
+ 'url(https://example.com/), url(https://example.com/) 3 -4, move'
+ ]
+);
+
+test_valid_value(
+ "cursor",
+ 'url("https://example.com/") 5 6, grab',
+ [
+ 'url("https://example.com/") 5 6, grab',
+ 'url(https://example.com/) 5 6, grab'
+ ]
+);
+
+test_valid_value(
+ "cursor",
+ 'image-set("https://example.com/" 1x) 5 6, grab',
+ [
+ 'image-set(url("https://example.com/") 1x) 5 6, grab',
+ 'image-set(url(https://example.com/) 1x) 5 6, grab'
+ ]
+);
+
+test_valid_value(
+ "cursor",
+ 'image-set("https://example.com/" 1x, "https://example.com/highres" 2x) 5 6, grab',
+ [
+ 'image-set(url("https://example.com/") 1x, url("https://example.com/highres") 2x) 5 6, grab',
+ 'image-set(url(https://example.com/) 1x, url(https://example.com/highres) 2x) 5 6, grab'
+ ]
+);
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/outline-color-computed.html b/testing/web-platform/tests/css/css-ui/parsing/outline-color-computed.html
new file mode 100644
index 0000000000..b9aab1d230
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/outline-color-computed.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: getComputedStyle().outlineColor</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#outline-color">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+<style>
+ #target {
+ color: blue;
+ }
+</style>
+</head>
+<body>
+<div id="target"></div>
+<script>
+'use strict';
+const currentColor = "rgb(0, 0, 255)";
+test_computed_value("outline-color", "currentColor", currentColor);
+test_computed_value("outline-color", "red", "rgb(255, 0, 0)");
+
+test(() => {
+ const target = document.getElementById('target');
+ target.style.outlineColor = 'invert';
+ if (target.style.outlineColor === 'invert')
+ assert_equals(getComputedStyle(target).outlineColor, 'invert');
+}, 'invert, if supported, computes to invert');
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/outline-color-invalid.html b/testing/web-platform/tests/css/css-ui/parsing/outline-color-invalid.html
new file mode 100644
index 0000000000..2b910e8030
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/outline-color-invalid.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: parsing outline-color with invalid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#outline-color">
+<meta name="assert" content="outline-color supports only the grammar '<color> | invert'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_invalid_value("outline-color", "auto");
+test_invalid_value("outline-color", "none");
+test_invalid_value("outline-color", "50%");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/outline-color-valid-mandatory.html b/testing/web-platform/tests/css/css-ui/parsing/outline-color-valid-mandatory.html
new file mode 100644
index 0000000000..2af0665824
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/outline-color-valid-mandatory.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: parsing outline-color with valid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#outline-color">
+<meta name="assert" content="outline-color supports '<color>'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_valid_value("outline-color", "rgba(10, 20, 30, 0.4)");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/outline-color-valid-optional.html b/testing/web-platform/tests/css/css-ui/parsing/outline-color-valid-optional.html
new file mode 100644
index 0000000000..7993299098
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/outline-color-valid-optional.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: parsing outline-color with valid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#outline-color">
+<meta name="assert" content="outline-color supports 'invert'.">
+<meta name="flags" content="may">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+// Conformant UAs may ignore the invert value on platforms that do not support color inversion of the pixels on the screen.
+test_valid_value("outline-color", "invert");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/outline-invalid.html b/testing/web-platform/tests/css/css-ui/parsing/outline-invalid.html
new file mode 100644
index 0000000000..c43cc3c643
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/outline-invalid.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: parsing outline with invalid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#outline">
+<meta name="assert" content="outline supports only the grammar '<outline-color> || <outline> || <outline>'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_invalid_value("outline", "invert solid rgba(10, 20, 30, 0.4)");
+test_invalid_value("outline", "double invert groove");
+test_invalid_value("outline", "thin outset thick");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/outline-offset-computed.html b/testing/web-platform/tests/css/css-ui/parsing/outline-offset-computed.html
new file mode 100644
index 0000000000..39da9f7349
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/outline-offset-computed.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: getComputedStyle().outlineOffset</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#outline-offset">
+<meta name="assert" content="outline-offset computed value is absolute length.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+</head>
+<body>
+<style>
+ #target {
+ font-size: 40px;
+ }
+</style>
+<div id="target"></div>
+<script>
+test_computed_value("outline-offset", "2.5px");
+test_computed_value("outline-offset", "10px");
+test_computed_value("outline-offset", "0.5em", "20px");
+test_computed_value("outline-offset", "calc(10px + 0.5em)", "30px");
+test_computed_value("outline-offset", "calc(10px - 0.5em)", "-10px");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/outline-offset-invalid.html b/testing/web-platform/tests/css/css-ui/parsing/outline-offset-invalid.html
new file mode 100644
index 0000000000..3ff26e35ae
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/outline-offset-invalid.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: parsing outline-offset with invalid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#outline-offset">
+<meta name="assert" content="outline-offset supports only the grammar '<length>'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_invalid_value("outline-offset", "auto");
+test_invalid_value("outline-offset", "1%");
+test_invalid_value("outline-offset", "2px 3px");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/outline-offset-valid.html b/testing/web-platform/tests/css/css-ui/parsing/outline-offset-valid.html
new file mode 100644
index 0000000000..75fc7e60bd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/outline-offset-valid.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: parsing outline-offset with valid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#outline-offset">
+<meta name="assert" content="outline-offset supports the full grammar '<length>'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_valid_value("outline-offset", "0", "0px");
+test_valid_value("outline-offset", "1px");
+test_valid_value("outline-offset", "2em");
+test_valid_value("outline-offset", "calc(3rem + 4vw)");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/outline-shorthand.html b/testing/web-platform/tests/css/css-ui/parsing/outline-shorthand.html
new file mode 100644
index 0000000000..01239e199e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/outline-shorthand.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: outline sets longhands</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#outline">
+<link rel="help" href="https://drafts.csswg.org/cssom/#serializing-css-values">
+<meta name="assert" content="outline supports the full grammar '<outline-color> || <outline> || <outline>'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/shorthand-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_shorthand_value('outline', '3px ridge blue', {
+ 'outline-color': 'blue',
+ 'outline-style': 'ridge',
+ 'outline-width': '3px'
+});
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/outline-style-computed.html b/testing/web-platform/tests/css/css-ui/parsing/outline-style-computed.html
new file mode 100644
index 0000000000..3824b8d598
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/outline-style-computed.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: getComputedStyle().outlineStyle</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#outline-style">
+<meta name="assert" content="outline-style computed value is as specified.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+</head>
+<body>
+<div id="target"></div>
+<script>
+test_computed_value("outline-style", "auto");
+
+test_computed_value("outline-style", "none");
+test_computed_value("outline-style", "dotted");
+test_computed_value("outline-style", "dashed");
+test_computed_value("outline-style", "solid");
+test_computed_value("outline-style", "double");
+test_computed_value("outline-style", "groove");
+test_computed_value("outline-style", "ridge");
+test_computed_value("outline-style", "inset");
+test_computed_value("outline-style", "outset");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/outline-style-invalid.html b/testing/web-platform/tests/css/css-ui/parsing/outline-style-invalid.html
new file mode 100644
index 0000000000..a659b68a55
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/outline-style-invalid.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 4: parsing outline-style with invalid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui/#outline-style">
+<meta name="assert" content="outline-style supports only the grammar 'auto | <outline-line-style>'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_invalid_value("outline-style", "hidden");
+test_invalid_value("outline-style", "dotted dashed");
+test_invalid_value("outline-style", "solid double groove ridge");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/outline-style-valid.html b/testing/web-platform/tests/css/css-ui/parsing/outline-style-valid.html
new file mode 100644
index 0000000000..dcaa2d5e7d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/outline-style-valid.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 4: parsing outline-style with valid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui/#outline-style">
+<meta name="assert" content="outline-style supports the full grammar 'auto | <outline-line-style>'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_valid_value("outline-style", "auto");
+
+test_valid_value("outline-style", "none");
+test_valid_value("outline-style", "dotted");
+test_valid_value("outline-style", "dashed");
+test_valid_value("outline-style", "solid");
+test_valid_value("outline-style", "double");
+test_valid_value("outline-style", "groove");
+test_valid_value("outline-style", "ridge");
+test_valid_value("outline-style", "inset");
+test_valid_value("outline-style", "outset");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/outline-valid-mandatory.html b/testing/web-platform/tests/css/css-ui/parsing/outline-valid-mandatory.html
new file mode 100644
index 0000000000..94d87cb112
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/outline-valid-mandatory.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: parsing outline with valid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#outline">
+<link rel="help" href="https://drafts.csswg.org/cssom/#serializing-css-values">
+<meta name="assert" content="outline supports the full grammar '<outline-color> || <outline> || <outline>'.">
+<meta name="assert" content="outline serializes in canonical order, with shortest possible serialization.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_valid_value("outline", "rgba(10, 20, 30, 0.4)");
+
+test_valid_value("outline", "auto");
+test_valid_value("outline", "none", ["invert", "currentcolor", "none", "medium"]);
+test_valid_value("outline", "dotted");
+test_valid_value("outline", "dashed");
+test_valid_value("outline", "solid");
+test_valid_value("outline", "double");
+test_valid_value("outline", "groove");
+test_valid_value("outline", "ridge");
+test_valid_value("outline", "inset");
+test_valid_value("outline", "outset");
+
+test_valid_value("outline", "0", "0px");
+test_valid_value("outline", "1px");
+test_valid_value("outline", "calc(2em + 3ex)");
+test_valid_value("outline", "thin");
+test_valid_value("outline", "medium", ["invert", "currentcolor", "none", "medium"]);
+test_valid_value("outline", "thick");
+
+test_valid_value("outline", "dashed thin");
+test_valid_value("outline", "medium rgba(10, 20, 30, 0.4)", ["rgba(10, 20, 30, 0.4) medium", "rgba(10, 20, 30, 0.4)"]);
+
+test_valid_value("outline", "3px ridge rgba(10, 20, 30, 0.4)", "rgba(10, 20, 30, 0.4) ridge 3px");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/outline-valid-optional.html b/testing/web-platform/tests/css/css-ui/parsing/outline-valid-optional.html
new file mode 100644
index 0000000000..8150ffa208
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/outline-valid-optional.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: parsing outline with valid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#outline">
+<link rel="help" href="https://drafts.csswg.org/cssom/#serializing-css-values">
+<meta name="assert" content="outline supports the full grammar '<outline-color> || <outline> || <outline>'.">
+<meta name="assert" content="outline serializes in canonical order, with shortest possible serialization.">
+<meta name="flags" content="may">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+// Conformant UAs may ignore the invert value on platforms that do not support color inversion of the pixels on the screen.
+test_valid_value("outline", "invert");
+test_valid_value("outline", "invert dotted 1px");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/outline-width-computed.html b/testing/web-platform/tests/css/css-ui/parsing/outline-width-computed.html
new file mode 100644
index 0000000000..ecb719bd75
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/outline-width-computed.html
@@ -0,0 +1,45 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: getComputedStyle().outlineWidth</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#outline-width">
+<meta name="assert" content="outline-width computed value is absolute length, 0 if the outline style is none.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+</head>
+<body>
+<style>
+ #target {
+ font-size: 40px;
+
+ border-style: dotted; /* Avoid border-*-width computed style 0 */
+ border-top-width: thin;
+ border-right-width: medium;
+ border-bottom-width: thick;
+
+ outline-style: dotted; /* Avoid outline-width computed style 0 */
+ }
+</style>
+<div id="target"></div>
+<script>
+test_computed_value("outline-width", "2.5px", "2px");
+test_computed_value("outline-width", "10px");
+test_computed_value("outline-width", "0.5em", "20px");
+test_computed_value("outline-width", "calc(10px + 0.5em)", "30px");
+test_computed_value("outline-width", "calc(10px - 0.5em)", "0px");
+
+test_computed_value("outline-width", "thin", getComputedStyle(target).borderTopWidth);
+test_computed_value("outline-width", "medium", getComputedStyle(target).borderRightWidth);
+test_computed_value("outline-width", "thick", getComputedStyle(target).borderBottomWidth);
+
+test(() => {
+ target.style['outline-width'] = '10px';
+ target.style['outline-style'] = 'none';
+ assert_equals(getComputedStyle(target)['outline-width'], '0px');
+ target.style['outline-style'] = '';
+}, 'outline-width is 0 when outline-style is none');
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/outline-width-invalid.html b/testing/web-platform/tests/css/css-ui/parsing/outline-width-invalid.html
new file mode 100644
index 0000000000..6008fffd94
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/outline-width-invalid.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 4: parsing outline-width with invalid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui/#outline-width">
+<meta name="assert" content="outline-width supports only the grammar '<border-width>'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_invalid_value("outline-width", "auto");
+test_invalid_value("outline-width", "1%");
+test_invalid_value("outline-width", "thin medium thick medium thin");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/outline-width-valid.html b/testing/web-platform/tests/css/css-ui/parsing/outline-width-valid.html
new file mode 100644
index 0000000000..2415e005de
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/outline-width-valid.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 4: parsing outline-width with valid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui/#outline-width">
+<meta name="assert" content="outline-width supports the full grammar '<border-width>'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_valid_value("outline-width", "0", "0px");
+test_valid_value("outline-width", "1px");
+test_valid_value("outline-width", "2em");
+test_valid_value("outline-width", "calc(2em + 3ex)");
+test_valid_value("outline-width", "thin");
+test_valid_value("outline-width", "medium");
+test_valid_value("outline-width", "thick");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/resize-computed.html b/testing/web-platform/tests/css/css-ui/parsing/resize-computed.html
new file mode 100644
index 0000000000..c4111f7aeb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/resize-computed.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: getComputedStyle().resize</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#resize">
+<meta name="assert" content="resize computed value is as specified.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+</head>
+<body>
+<div id="target"></div>
+<script>
+test_computed_value("resize", "none");
+test_computed_value("resize", "both");
+test_computed_value("resize", "horizontal");
+test_computed_value("resize", "vertical");
+test_pseudo_computed_value("::before", "resize", "both");
+test_pseudo_computed_value("::after", "resize", "vertical");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/resize-invalid.html b/testing/web-platform/tests/css/css-ui/parsing/resize-invalid.html
new file mode 100644
index 0000000000..7f9698f7aa
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/resize-invalid.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: parsing resize with invalid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#resize">
+<meta name="assert" content="resize supports only the grammar 'none | both | horizontal | vertical'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_invalid_value("resize", "auto");
+test_invalid_value("resize", "horizontal vertical");
+test_invalid_value("resize", "both 0");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/resize-valid.html b/testing/web-platform/tests/css/css-ui/parsing/resize-valid.html
new file mode 100644
index 0000000000..d50df443e0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/resize-valid.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: parsing resize with valid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#resize">
+<meta name="assert" content="resize supports the full grammar 'none | both | horizontal | vertical'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_valid_value("resize", "none");
+test_valid_value("resize", "both");
+test_valid_value("resize", "horizontal");
+test_valid_value("resize", "vertical");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/text-overflow-computed.html b/testing/web-platform/tests/css/css-ui/parsing/text-overflow-computed.html
new file mode 100644
index 0000000000..701506e617
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/text-overflow-computed.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: getComputedStyle().textOverflow</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#text-overflow">
+<meta name="assert" content="text-overflow computed value is as specified.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+</head>
+<body>
+<div id="target"></div>
+<script>
+test_computed_value("text-overflow", "clip");
+test_computed_value("text-overflow", "ellipsis");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/text-overflow-invalid.html b/testing/web-platform/tests/css/css-ui/parsing/text-overflow-invalid.html
new file mode 100644
index 0000000000..aa4169c146
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/text-overflow-invalid.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: parsing text-overflow with invalid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#text-overflow">
+<meta name="assert" content="text-overflow supports only the grammar 'clip | ellipsis'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_invalid_value("text-overflow", "auto");
+test_invalid_value("text-overflow", "clip ellipsis clip");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/text-overflow-valid.html b/testing/web-platform/tests/css/css-ui/parsing/text-overflow-valid.html
new file mode 100644
index 0000000000..5d40b6839d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/text-overflow-valid.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 3: parsing text-overflow with valid values</title>
+<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#text-overflow">
+<meta name="assert" content="text-overflow supports the full grammar 'clip | ellipsis'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_valid_value("text-overflow", "clip");
+test_valid_value("text-overflow", "ellipsis");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/user-select-computed.html b/testing/web-platform/tests/css/css-ui/parsing/user-select-computed.html
new file mode 100644
index 0000000000..ef8691a076
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/user-select-computed.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 4: getComputedStyle().userSelect</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#content-selection">
+<meta name="assert" content="user-select computed value is as specified.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+</head>
+<body>
+<div id="target"></div>
+<script>
+test_computed_value("user-select", "auto");
+test_computed_value("user-select", "text");
+test_computed_value("user-select", "none");
+test_computed_value("user-select", "contain");
+test_computed_value("user-select", "all");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/user-select-invalid.html b/testing/web-platform/tests/css/css-ui/parsing/user-select-invalid.html
new file mode 100644
index 0000000000..7fe7feeca8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/user-select-invalid.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 4: parsing user-select with invalid values</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#content-selection">
+<meta name="assert" content="user-select supports only the grammar 'auto | text | none | contain | all'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_invalid_value("user-select", "visible");
+test_invalid_value("user-select", "text contain");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/parsing/user-select-valid.html b/testing/web-platform/tests/css/css-ui/parsing/user-select-valid.html
new file mode 100644
index 0000000000..e78ac7ce2b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/parsing/user-select-valid.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS UI Level 4: parsing user-select with valid values</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#content-selection">
+<meta name="assert" content="user-select supports the full grammar 'auto | text | none | contain | all'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_valid_value("user-select", "auto");
+test_valid_value("user-select", "text");
+test_valid_value("user-select", "none");
+test_valid_value("user-select", "contain");
+test_valid_value("user-select", "all");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/pointer-events-no-scrollbars-001-ref.html b/testing/web-platform/tests/css/css-ui/pointer-events-no-scrollbars-001-ref.html
new file mode 100644
index 0000000000..096eb16229
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/pointer-events-no-scrollbars-001-ref.html
@@ -0,0 +1,26 @@
+<!DOCTYPE HTML>
+<html>
+<title>CSS Test Reference: differences in pointer-events shouldn't cause overlay scrollbars to appear</title>
+<link rel="author" title="L. David Baron" href="https://dbaron.org/">
+<link rel="author" title="Google" href="http://www.google.com/">
+
+<style>
+
+#scroll {
+ width: 200px;
+ height: 200px;
+ overflow: auto;
+}
+
+#big {
+ width: 500px;
+ height: 500px;
+}
+
+</style>
+
+
+<div id="scroll">
+ <div id="big">
+ </div>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/pointer-events-no-scrollbars-001.html b/testing/web-platform/tests/css/css-ui/pointer-events-no-scrollbars-001.html
new file mode 100644
index 0000000000..fc438f7bea
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/pointer-events-no-scrollbars-001.html
@@ -0,0 +1,31 @@
+<!DOCTYPE HTML>
+<html>
+<title>CSS Test: differences in pointer-events shouldn't cause overlay scrollbars to appear</title>
+<link rel="author" title="L. David Baron" href="https://dbaron.org/">
+<link rel="author" title="Google" href="http://www.google.com/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#pointer-events-control">
+<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=1414142">
+<meta name="assert" content="Differences in pointer-events shouldn't cause overlay scrollbars to appear. (I concede this could perhaps be allowed by the wording in the spec that makes basically everything related to scrollbar rendering UA-defined. However, there is no allowance for pointer-events affecting scrollbar rendering, so I think it's defensible.)">
+<link rel="match" href="pointer-events-no-scrollbars-001-ref.html">
+
+<style>
+
+#scroll {
+ width: 200px;
+ height: 200px;
+ overflow: auto;
+ pointer-events: none;
+}
+
+#big {
+ width: 500px;
+ height: 500px;
+}
+
+</style>
+
+
+<div id="scroll">
+ <div id="big">
+ </div>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/pointer-events-no-scrollbars-002.html b/testing/web-platform/tests/css/css-ui/pointer-events-no-scrollbars-002.html
new file mode 100644
index 0000000000..1371c12644
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/pointer-events-no-scrollbars-002.html
@@ -0,0 +1,39 @@
+<!DOCTYPE HTML>
+<html class="reftest-wait">
+<title>CSS Test: dynamic changes to pointer-events shouldn't cause overlay scrollbars to appear</title>
+<link rel="author" title="L. David Baron" href="https://dbaron.org/">
+<link rel="author" title="Google" href="http://www.google.com/">
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#pointer-events-control">
+<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=1414142">
+<meta name="assert" content="Dynamic changes to pointer-events shouldn't cause overlay scrollbars to appear. (I concede this could perhaps be allowed by the wording in the spec that makes basically everything related to scrollbar rendering UA-defined. However, there is no allowance for pointer-events affecting scrollbar rendering, so I think it's defensible.)">
+<link rel="match" href="pointer-events-no-scrollbars-001-ref.html">
+
+<style>
+
+#scroll {
+ width: 200px;
+ height: 200px;
+ overflow: auto;
+}
+
+#big {
+ width: 500px;
+ height: 500px;
+}
+
+</style>
+
+
+<div id="scroll">
+ <div id="big">
+ </div>
+</div>
+
+<script>
+
+document.documentElement.addEventListener("TestRendered", (event) => {
+ document.getElementById("scroll").style.pointerEvents = "none";
+ document.documentElement.classList.remove("reftest-wait");
+});
+
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/reference/box-sizing-001-ref.html b/testing/web-platform/tests/css/css-ui/reference/box-sizing-001-ref.html
new file mode 100644
index 0000000000..0207bc06be
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/box-sizing-001-ref.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Reference File</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<style>
+#cb {
+ position: absolute;
+ width: 100px;
+ height: 100px;
+}
+#test {
+ margin-right: 5px;
+ margin-top: 25px;
+ margin-left: 25px;
+ width: 70px;
+ height: 70px;
+ background:green;
+}
+</style>
+<body>
+ <p>Test passes if there is a <strong>filled green square</strong> and <strong>no red</strong>.</p>
+ <div id="cb">
+ <div id="test"></div>
+ </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/reference/box-sizing-007-ref.html b/testing/web-platform/tests/css/css-ui/reference/box-sizing-007-ref.html
new file mode 100644
index 0000000000..71a3649a1a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/box-sizing-007-ref.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Reference File</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<style>
+div {
+ display: inline-block;
+ width: 100px;
+ height: 100px;
+ background: green;
+ margin: 10px;
+}
+
+body {
+ max-width: 700px;
+}
+</style>
+<body>
+ <p>Test passes if there are 20 <strong>filled green squares</strong> and they are the <strong>same size</strong>.</p>
+ <div></div>
+ <div></div>
+ <div></div>
+ <div></div>
+ <div></div>
+ <div></div>
+ <div></div>
+ <div></div>
+ <div></div>
+ <div></div>
+ <div></div>
+ <div></div>
+ <div></div>
+ <div></div>
+ <div></div>
+ <div></div>
+ <div></div>
+ <div></div>
+ <div></div>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/reference/box-sizing-008-ref.html b/testing/web-platform/tests/css/css-ui/reference/box-sizing-008-ref.html
new file mode 100644
index 0000000000..999106dcd7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/box-sizing-008-ref.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Reference File</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<style>
+div {
+ width: 100px;
+ height: 150px;
+ background: green;
+ margin: 10px;
+ display: inline-block;
+}
+
+body {
+ max-width: 400px;
+}
+</style>
+<body>
+ <p>Test passes if there are 6 <strong>filled green rectangles</strong> and they are the <strong>same size</strong>.</p>
+ <div></div>
+ <div></div>
+ <div></div>
+ <div></div>
+ <div></div>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/reference/box-sizing-009-ref.html b/testing/web-platform/tests/css/css-ui/reference/box-sizing-009-ref.html
new file mode 100644
index 0000000000..7df74a56ea
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/box-sizing-009-ref.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Reference File</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<style>
+div {
+ width: 300px;
+ height: 100px;
+ background: green;
+ margin: 10px;
+ display: inline-block;
+}
+body {
+ max-width: 700px;
+}
+</style>
+<body>
+ <p>Test passes if there are 6 <strong>filled green rectangles</strong> and they are the <strong>same size</strong>.</p>
+ <div></div>
+ <div></div>
+ <div></div>
+ <div></div>
+ <div></div>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/reference/box-sizing-010-ref.html b/testing/web-platform/tests/css/css-ui/reference/box-sizing-010-ref.html
new file mode 100644
index 0000000000..6c150a9742
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/box-sizing-010-ref.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Reference File</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<style>
+div {
+ display: inline-block;
+ width: 70px;
+ height: 70px;
+ background: green;
+}
+
+</style>
+<body>
+ <p>Test passes if there are 2 <strong>filled green squares</strong> and they are the <strong>same size</strong>.</p>
+ <div></div>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/reference/box-sizing-012-ref.html b/testing/web-platform/tests/css/css-ui/reference/box-sizing-012-ref.html
new file mode 100644
index 0000000000..4d6517f31d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/box-sizing-012-ref.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Reference File</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<style>
+div {
+ margin-bottom: 10px;
+ width: 100px;
+ height: 70px;
+ background: green;
+}
+
+</style>
+<body>
+ <p>Test passes if there are 2 <strong>filled green rectangles</strong> and they are the <strong>same size</strong>.</p>
+ <div></div>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/reference/box-sizing-013-ref.html b/testing/web-platform/tests/css/css-ui/reference/box-sizing-013-ref.html
new file mode 100644
index 0000000000..11fa393650
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/box-sizing-013-ref.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Reference File</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<style>
+div {
+ display:inline-block;
+ height: 100px;
+ width: 70px;
+ background: green;
+}
+
+</style>
+<body>
+ <p>Test passes if there are 2 <strong>filled green rectangles</strong> and they are the <strong>same size</strong>.</p>
+ <div></div>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/reference/box-sizing-020-ref.html b/testing/web-platform/tests/css/css-ui/reference/box-sizing-020-ref.html
new file mode 100644
index 0000000000..31f08ffbe0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/box-sizing-020-ref.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Reference File</title>
+<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
+<style>
+div {
+ display: inline-block;
+ width: 130px;
+ height: 130px;
+ background: green;
+}
+
+</style>
+<body>
+ <p>Test passes if there are 2 <strong>filled green squares</strong> and they are the <strong>same size</strong>.</p>
+ <div></div>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/reference/box-sizing-022-ref.html b/testing/web-platform/tests/css/css-ui/reference/box-sizing-022-ref.html
new file mode 100644
index 0000000000..facb307229
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/box-sizing-022-ref.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Reference File</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<style>
+div {
+ display: inline-block;
+ width: 130px;
+ height: 150px;
+ background: green;
+}
+
+</style>
+<body>
+ <p>Test passes if there are 2 <strong>filled green rectangles</strong> and they are the <strong>same size</strong>.</p>
+ <div></div>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/reference/box-sizing-023-ref.html b/testing/web-platform/tests/css/css-ui/reference/box-sizing-023-ref.html
new file mode 100644
index 0000000000..5e103f7712
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/box-sizing-023-ref.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Reference File</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<style>
+div {
+ height: 130px;
+ margin-bottom: 10px;
+ width: 300px;
+ background: green;
+}
+
+</style>
+<body>
+ <p>Test passes if there are 2 <strong>filled green rectangles</strong> and they are the <strong>same size</strong>.</p>
+ <div></div>
+ <div></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/reference/outline-006-ref.html b/testing/web-platform/tests/css/css-ui/reference/outline-006-ref.html
new file mode 100644
index 0000000000..3c15fcbf6c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/outline-006-ref.html
@@ -0,0 +1,17 @@
+<!doctype html>
+<html lang=en>
+ <meta charset=utf-8>
+ <link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+ <title>CSS-UI test reference</title>
+<style>
+div {
+ width: 100px;
+ height: 100px;
+ background: green;
+}
+
+</style>
+
+ <p>Test passes if there is a filled green square and <strong>no pink</strong>.</p>
+ <div></div>
+
diff --git a/testing/web-platform/tests/css/css-ui/reference/outline-007-ref.html b/testing/web-platform/tests/css/css-ui/reference/outline-007-ref.html
new file mode 100644
index 0000000000..a32464c106
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/outline-007-ref.html
@@ -0,0 +1,8 @@
+<!doctype html>
+<html lang=en>
+ <meta charset=utf-8>
+ <link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+ <title>CSS-UI test reference</title>
+
+ <p>Test passes if there is an outlined box below. The outline may be any shape or color so long as it is visible.</p>
+
diff --git a/testing/web-platform/tests/css/css-ui/reference/outline-020-ref.html b/testing/web-platform/tests/css/css-ui/reference/outline-020-ref.html
new file mode 100644
index 0000000000..194b633691
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/outline-020-ref.html
@@ -0,0 +1,26 @@
+<!doctype html>
+<html lang=en>
+ <meta charset=utf-8>
+ <title>CSS-UI test: outline block with outline inline reference file</title>
+ <link rel="author" title="Aleks Totic <atotic@chromium.org>">
+ <meta name=assert content="inline child displays outline correctly">
+<style>
+#container {
+ border: 5px solid green;
+ width: 110px;
+ height: 40px;
+ position: relative;
+ top: -5px;
+ left: -5px;
+}
+
+#target {
+ border: 5px solid blue;
+ position: relative;
+ top: 5px;
+}
+</style>
+
+ <p>Test passes if blue outline touches top left of green outline.</p>
+ <div id="container"><span id="target">x</span></div>
+
diff --git a/testing/web-platform/tests/css/css-ui/reference/outline-021-notref.html b/testing/web-platform/tests/css/css-ui/reference/outline-021-notref.html
new file mode 100644
index 0000000000..eb074ed44f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/outline-021-notref.html
@@ -0,0 +1,7 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>CSS test reference</title>
+<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
+<link rel="author" title="Mozilla" href="https://mozilla.org">
+
+<input type="submit" style="outline: none">
diff --git a/testing/web-platform/tests/css/css-ui/reference/outline-024-ref.html b/testing/web-platform/tests/css/css-ui/reference/outline-024-ref.html
new file mode 100644
index 0000000000..553b4493d3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/outline-024-ref.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface: Reference test for outline with padding</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<meta name="flags" content="ahem">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<p>Test passes if the outline is wrapping all the green boxes.</p>
+<div style="width: 50px; height: 50px; padding: 10px; outline: auto;">
+ <div style="font: 50px/1 Ahem; color: green;">XX</div>
+</div>
+
diff --git a/testing/web-platform/tests/css/css-ui/reference/outline-027-ref.html b/testing/web-platform/tests/css/css-ui/reference/outline-027-ref.html
new file mode 100644
index 0000000000..ba84ec101b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/outline-027-ref.html
@@ -0,0 +1,160 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface: Reference test for outline with padding</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<meta name="flags" content="ahem">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+.outline-container {
+ margin: 10px 0px;
+ width: 10px;
+ height: 10px;
+ outline: auto;
+ font: 10px/1 Ahem;
+}
+
+.outline-container > div {
+ color: lime;
+}
+</style>
+<p>Test passes if the outline is wrapping all the green boxes.</p>
+<div style="display: grid; grid-template-columns: repeat(6, 100px);">
+ <div>
+ <div class="outline-container" style="padding-left: 5px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding-right: 5px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding-top: 5px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding-bottom: 5px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding: 0px 5px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding: 5px 0px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding: 5px;">
+ <div>XX</div>
+ </div>
+ </div>
+ <div>
+ <div class="outline-container" style="padding-left: 20px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding-right: 20px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding-top: 20px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding-bottom: 20px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding: 0px 20px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding: 20px 0px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding: 20px;">
+ <div>XX</div>
+ </div>
+ </div>
+ <div>
+ <div class="outline-container" style="padding-left: 5px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding-right: 5px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding-top: 5px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding-bottom: 5px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding: 0px 5px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding: 5px 0px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding: 5px;">
+ <div>XX</div>
+ </div>
+ </div>
+ <div>
+ <div class="outline-container" style="padding-left: 20px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding-right: 20px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding-top: 20px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding-bottom: 20px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding: 0px 20px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding: 20px 0px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding: 20px;">
+ <div>XX</div>
+ </div>
+ </div>
+ <div>
+ <div class="outline-container" style="padding-left: 5px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding-right: 5px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding-top: 5px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding-bottom: 5px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding: 0px 5px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding: 5px 0px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding: 5px;">
+ <div>XX</div>
+ </div>
+ </div>
+ <div>
+ <div class="outline-container" style="padding-left: 20px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding-right: 20px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding-top: 20px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding-bottom: 20px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding: 0px 20px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding: 20px 0px;">
+ <div>XX</div>
+ </div>
+ <div class="outline-container" style="padding: 20px;">
+ <div>XX</div>
+ </div>
+ </div>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/reference/outline-028-ref.html b/testing/web-platform/tests/css/css-ui/reference/outline-028-ref.html
new file mode 100644
index 0000000000..c0f7b134ff
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/outline-028-ref.html
@@ -0,0 +1,136 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface: Reference test for outline with floatted descendants</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<meta name="flags" content="ahem">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+.outline-container {
+ width: max-content;
+ margin: 30px 0px;
+ outline: auto;
+ font: 10px/1 Ahem;
+ height: 10px;
+}
+
+.inline {
+ display: inline-block;
+ color: lime;
+}
+
+span {
+ color: lime;
+}
+</style>
+<p>Test passes if the outline is wrapping all the green boxes.</p>
+<div style="display: grid; grid-template-columns: repeat(4, 100px);">
+ <div>
+ <div class="outline-container">
+ <span>XX</span>
+ </div>
+ <div class="outline-container">
+ <div class="inline" style="margin-left: 5px;">XX</div>
+ </div>
+ <div class="outline-container">
+ <div class="inline" style="margin-right: 5px;">X</div><span>X</span>
+ </div>
+ <div class="outline-container" style="width: 20px; background: lime;">
+ <div class="inline" style="padding-top: 5px; background: white">X</div>
+ </div>
+ <div class="outline-container">
+ <span>XX</span>
+ </div>
+ <div class="outline-container">
+ <div class="inline" style="margin: 0px 5px;">X</div><span>X</span>
+ </div>
+ <div class="outline-container" style="width: 20px; background: lime;">
+ <div class="inline" style="padding-top: 5px; background: white">X</div>
+ </div>
+ <div class="outline-container" style="width: 30px; display: grid; grid: repeat(3, 5px) / repeat(6, 5px);">
+ <div style="grid-column: 2 / span 2; grid-row: 2 / span 2; background: lime;"></div>
+ <div style="grid-column: 5 / span 2; grid-row: 1 / span 2; background: lime;"></div>
+ </div>
+ </div>
+ <div>
+ <div class="outline-container">
+ <span>XX</span>
+ </div>
+ <div class="outline-container">
+ <div class="inline" style="margin-left: 20px;">XX</div>
+ </div>
+ <div class="outline-container">
+ <div class="inline" style="margin-right: 20px;">X</div><span>X</span>
+ </div>
+ <div class="outline-container" style="width: 20px; display: grid; grid: repeat(3, 10px) / repeat(2, 10px);">
+ <div style="grid-column: 2; grid-row: 1; background: lime;"></div>
+ <div style="grid-column: 1; grid-row: 3; background: lime;"></div>
+ </div>
+ <div class="outline-container">
+ <span>XX</span>
+ </div>
+ <div class="outline-container">
+ <div class="inline" style="margin: 0px 20px;">X</div><span>X</span>
+ </div>
+ <div class="outline-container" style="width: 20px; display: grid; grid: repeat(3, 10px) / repeat(2, 10px);">
+ <div style="grid-column: 2; grid-row: 1; background: lime;"></div>
+ <div style="grid-column: 1; grid-row: 3; background: lime;"></div>
+ </div>
+ <div class="outline-container" style="width: 60px; height: 60px; display: grid; grid: repeat(6, 10px) / repeat(6, 10px);">
+ <div style="grid-column: 1; grid-row: 6; background: lime;"></div>
+ <div style="grid-column: 4; grid-row: 3; background: lime;"></div>
+ </div>
+ </div>
+ <div>
+ <div class="outline-container">
+ <span>XX</span>
+ </div>
+ <div class="outline-container">
+ <div class="inline" style="padding-left: 5px;">XX</div>
+ </div>
+ <div class="outline-container">
+ <div class="inline" style="padding-right: 5px;">X</div><span>X</span>
+ </div>
+ <div class="outline-container" style="width: 20px; background: lime;">
+ <div class="inline" style="padding-top: 5px; background: white">X</div>
+ </div>
+ <div class="outline-container" style="width: 20px; background: lime;">
+ <div class="inline" style="padding-bottom: 5px; background: white">X</div>
+ </div>
+ <div class="outline-container">
+ <div class="inline" style="padding: 0px 5px;">X</div><span>X</span>
+ </div>
+ <div class="outline-container" style="width: 20px; background: lime;">
+ <div class="inline" style="padding: 5px 0px; background: white">X</div>
+ </div>
+ <div class="outline-container" style="width: 30px; background: lime;">
+ <div class="inline" style="padding: 5px; background: white">X</div>
+ </div>
+ </div>
+ <div>
+ <div class="outline-container">
+ <span>XX</span>
+ </div>
+ <div class="outline-container">
+ <div class="inline" style="padding-left: 20px;">XX</div>
+ </div>
+ <div class="outline-container">
+ <div class="inline" style="padding-right: 20px;">X</div><span>X</span>
+ </div>
+ <div class="outline-container" style="width: 20px; background: lime;">
+ <div class="inline" style="padding-top: 20px; background: white">X</div>
+ </div>
+ <div class="outline-container" style="width: 20px; background: lime;">
+ <div class="inline" style="padding-bottom: 20px; background: white">X</div>
+ </div>
+ <div class="outline-container">
+ <div class="inline" style="padding: 0px 20px;">X</div><span>X</span>
+ </div>
+ <div class="outline-container" style="width: 20px; background: lime;">
+ <div class="inline" style="padding: 20px 0px; background: white">X</div>
+ </div>
+ <div class="outline-container" style="width: 60px; height: 60px; display: grid; grid: repeat(6, 10px) / repeat(6, 10px);">
+ <div style="grid-column: 1; grid-row: 6; background: lime;"></div>
+ <div style="grid-column: 4; grid-row: 3; background: lime;"></div>
+ </div>
+ </div>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/reference/outline-offset.html b/testing/web-platform/tests/css/css-ui/reference/outline-offset.html
new file mode 100644
index 0000000000..63f852ca46
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/outline-offset.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>ttwf-reftest-outline-offset-ref</title>
+ <link rel="author" title="jy-jeung" href="mailto:kein119@naver.com">
+ <style type="text/css">
+ div
+ {
+ display:inline-block;
+ margin:10px;
+ width:180px;
+ height:80px;
+ border:2px solid green;
+ outline:2px solid red;
+ outline-offset:10px;
+ }
+ </style>
+</head>
+<body>
+ <p>PASS if there a space between the border.</p>
+ <div>
+ </div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/reference/outline-style-011-ref.html b/testing/web-platform/tests/css/css-ui/reference/outline-style-011-ref.html
new file mode 100644
index 0000000000..ae8a418890
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/outline-style-011-ref.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Reference File</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<style>
+ #test {
+ border: 4px dotted green;
+ height: 100px;
+ margin: 26px;
+ width: 100px;
+ }
+</style>
+<body>
+ <p>Test passes if there is a blank square with <strong>a green dotted</strong> border.</p>
+ <div id="test"></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/reference/outline-style-012-ref.html b/testing/web-platform/tests/css/css-ui/reference/outline-style-012-ref.html
new file mode 100644
index 0000000000..efdb182974
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/outline-style-012-ref.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Reference File</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<style>
+ #parent {
+ border: 4px dotted blue;
+ height: 150px;
+ margin: 26px;
+ width: 150px;
+ }
+ #child {
+ border: 4px dotted green;
+ height: 110px;
+ margin: 16px;
+ width: 110px;
+ }
+</style>
+<body>
+ <p>Test passes if there is a blank square with <strong>a green dotted</strong> border centered inside a blue dotted border.</p>
+ <div id="parent">
+ <div id="child"></div>
+ </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/reference/outline-style-013-ref.html b/testing/web-platform/tests/css/css-ui/reference/outline-style-013-ref.html
new file mode 100644
index 0000000000..1d635037f1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/outline-style-013-ref.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Reference File</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<style>
+ #test {
+ border: 2px dashed green;
+ height: 150px;
+ margin: 28px;
+ width: 150px;
+ }
+</style>
+<body>
+ <p>Test passes if there is a blank square whose border is <strong>green dashed</strong>.</p>
+ <div id="test"></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/reference/outline-style-014-ref.html b/testing/web-platform/tests/css/css-ui/reference/outline-style-014-ref.html
new file mode 100644
index 0000000000..345be332be
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/outline-style-014-ref.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Reference File</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<style>
+ #test {
+ border: 4px double green;
+ height: 150px;
+ margin: 26px;
+ width: 150px;
+ }
+</style>
+<body>
+ <p>Test passes if there is a blank square whose border is <strong>two green solid lines</strong>.</p>
+ <div id="test"></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/reference/outline-with-padding-001-ref.html b/testing/web-platform/tests/css/css-ui/reference/outline-with-padding-001-ref.html
new file mode 100644
index 0000000000..62b0c41757
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/outline-with-padding-001-ref.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<style>
+inline-block {
+ display: inline-block;
+ width: 65px;
+ color: transparent;
+ background: orange;
+}
+spacer {
+ display: inline-block;
+ width: 99px;
+}
+</style>
+<body>
+<div style="display: flex">
+ <span style="outline: auto">
+ <spacer></spacer><inline-block>Previous</inline-block>
+ </span>
+</div>
+
+<div style="display: inline-block; outline: auto; white-space: nowrap;">
+ <spacer></spacer><inline-block>Previous</inline-block>
+</div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/reference/text-overflow-001-ref.html b/testing/web-platform/tests/css/css-ui/reference/text-overflow-001-ref.html
new file mode 100644
index 0000000000..9e9303106a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/text-overflow-001-ref.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Reference File</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+ div {
+ font-size: 10px;
+ }
+ span {
+ font-family: Ahem;
+ font-size: 30px;
+ }
+</style>
+<body>
+ <p>Test passes if there is a <strong>black rectangle</strong> below.</p>
+ <div>
+ <span>Test</span>
+ </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/reference/text-overflow-002-ref.html b/testing/web-platform/tests/css/css-ui/reference/text-overflow-002-ref.html
new file mode 100644
index 0000000000..21bf0afd54
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/text-overflow-002-ref.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Reference File</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+ div {
+ font-size: 10px;
+ }
+ span {
+ font-family: Ahem;
+ font-size: 30px;
+ }
+</style>
+<body>
+ <p>PREREQUISITE: The font used must have a glyph for the U+2026 character.</p>
+ <p>Test passes if there is an <strong>ellipsis</strong> after a black rectangle below.</p>
+ <div>
+ <span>Test</span>&#x2026
+ </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/reference/text-overflow-005-ref.html b/testing/web-platform/tests/css/css-ui/reference/text-overflow-005-ref.html
new file mode 100644
index 0000000000..1ad5eabed7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/text-overflow-005-ref.html
@@ -0,0 +1,8 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>CSS-UI test reference</title>
+<link rel="author" title="Michael Howell" href="mailto:michael@notriddle.com">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>html{font-family:Ahem}</style>
+<div style="width:20em"><p style="text-overflow:ellipsis;overflow:hidden">XXXXXXXXXX</p></div>
+
diff --git a/testing/web-platform/tests/css/css-ui/reference/text-overflow-006-ref.html b/testing/web-platform/tests/css/css-ui/reference/text-overflow-006-ref.html
new file mode 100644
index 0000000000..cec2ba0e80
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/text-overflow-006-ref.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Test reference File</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<style>
+div {
+ white-space: pre;
+ font-family: monospace;
+}
+</style>
+
+<p>Test passes if “PASS…” appears below.</p>
+<div>PASS…</div>
diff --git a/testing/web-platform/tests/css/css-ui/reference/text-overflow-008-ref.html b/testing/web-platform/tests/css/css-ui/reference/text-overflow-008-ref.html
new file mode 100644
index 0000000000..e95924a968
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/text-overflow-008-ref.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Reference File</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+div {
+ font-size: 100px;
+ line-height: 1;
+ font-family: Ahem;
+ overflow: hidden;
+ width: 0.5em;
+ color: green;
+}
+</style>
+
+<p>Test passes if there is a filled green rectangle and <strong>no red</strong>.</p>
+<div>x</div>
diff --git a/testing/web-platform/tests/css/css-ui/reference/text-overflow-012-ref.html b/testing/web-platform/tests/css/css-ui/reference/text-overflow-012-ref.html
new file mode 100644
index 0000000000..700f9c896f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/text-overflow-012-ref.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test Reference File</title>
+<style>
+div {
+ font-size: 50px;
+ white-space: pre;
+ color: green;
+}
+span {
+ color: white;
+}
+</style>
+
+<p>Test passes if there are three green dots below and <strong>no red</strong>.</p>
+
+<div> …<span>&#x0E01;&#x0E33;</span></div>
diff --git a/testing/web-platform/tests/css/css-ui/reference/text-overflow-013-ref.html b/testing/web-platform/tests/css/css-ui/reference/text-overflow-013-ref.html
new file mode 100644
index 0000000000..4dd394e925
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/text-overflow-013-ref.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Test reference</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+.test {
+ overflow: hidden;
+ white-space: pre;
+ font: 100px/1 Ahem;
+ width: 2em;
+}
+.green {
+ position: absolute;
+ width: 100px;
+ height: 100px;
+ background: green;
+ margin-left: 100px;
+}
+span {
+ vertical-align: sub;
+}
+</style>
+
+<p>Test passes if there are 3 filled green squares and <strong>no red</strong>.</p>
+<div class="green"></div>
+<div class=test><span><br><div class="green"></div><br><div class="green"></div></span></div>
diff --git a/testing/web-platform/tests/css/css-ui/reference/text-overflow-016-ref.html b/testing/web-platform/tests/css/css-ui/reference/text-overflow-016-ref.html
new file mode 100644
index 0000000000..a5a983aff5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/text-overflow-016-ref.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Test reference</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<style>
+div {
+ margin-left: 60px;
+ background: green;
+ width: 40px;
+ height: 40px;
+}
+</style>
+
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+<div></div>
diff --git a/testing/web-platform/tests/css/css-ui/reference/text-overflow-021-ref.html b/testing/web-platform/tests/css/css-ui/reference/text-overflow-021-ref.html
new file mode 100644
index 0000000000..466755df6f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/text-overflow-021-ref.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: test reference</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<style>
+div {
+ font-family: monospace;
+ width: 16ch;
+ white-space: pre;
+ overflow: scroll;
+ border: solid blue;
+}
+</style>
+
+<p>This test passes if the text is in the blue box below is “PASS”.
+<div id=test> PASS</div>
+<script>
+var test = document.getElementById("test");
+test.scrollBy(500,0);
+</script>
+
+
diff --git a/testing/web-platform/tests/css/css-ui/reference/text-overflow-022-ref.html b/testing/web-platform/tests/css/css-ui/reference/text-overflow-022-ref.html
new file mode 100644
index 0000000000..db7d08f450
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/text-overflow-022-ref.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test Reference File</title>
+<style>
+div {
+ font-size: 50px;
+ white-space: pre;
+ color: green;
+}
+span {
+ color: transparent;
+}
+</style>
+
+<p>Test passes if there are three green dots below and <strong>no red</strong>.</p>
+
+<div> …<span>l&#x20DE;</span></div>
diff --git a/testing/web-platform/tests/css/css-ui/reference/text-overflow-027-ref.html b/testing/web-platform/tests/css/css-ui/reference/text-overflow-027-ref.html
new file mode 100644
index 0000000000..8fc664b5d9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/text-overflow-027-ref.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test Reference</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<style>
+div { font-family: monospace; }
+</style>
+
+<p>The test passes if the following text is visible below: 123456 FE…</p>
+<div>123456 FE…</bdo></div>
diff --git a/testing/web-platform/tests/css/css-ui/reference/text-overflow-028-ref.html b/testing/web-platform/tests/css/css-ui/reference/text-overflow-028-ref.html
new file mode 100644
index 0000000000..b25ab2600b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/text-overflow-028-ref.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test Reference</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<style>
+div { font-family: monospace; }
+</style>
+
+<p>The test passes if the following text is visible below: …56 FEDCBA</p>
+<div>…56 FEDCBA</div>
diff --git a/testing/web-platform/tests/css/css-ui/reference/text-overflow-029-ref.html b/testing/web-platform/tests/css/css-ui/reference/text-overflow-029-ref.html
new file mode 100644
index 0000000000..9cdd741ec2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/text-overflow-029-ref.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html lang="en">
+<meta charset="utf-8">
+<title>CSS Basic User Interface Reference</title>
+<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/">
+<style>
+div { font: 20px monospace; }
+</style>
+
+<div>Test passed…</div>
diff --git a/testing/web-platform/tests/css/css-ui/reference/text-overflow-030-ref.html b/testing/web-platform/tests/css/css-ui/reference/text-overflow-030-ref.html
new file mode 100644
index 0000000000..5e4f4936a1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/text-overflow-030-ref.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Reference</title>
+<style>
+.positioned {
+ background-color: green;
+ position: absolute;
+ width: 100px;
+ height: 100px;
+}
+</style>
+<p>Test passes if there is a green rectangle and no red.</p>
+<div class="positioned"></div>
diff --git a/testing/web-platform/tests/css/css-ui/reference/text-overflow-change-color-ref.html b/testing/web-platform/tests/css/css-ui/reference/text-overflow-change-color-ref.html
new file mode 100644
index 0000000000..c1d94571cd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/text-overflow-change-color-ref.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<style>
+div {
+ color: lime;
+ text-overflow: ellipsis;
+ overflow: hidden;
+ white-space: pre;
+ font-size: 50px;
+ width: 5ch;
+}
+</style>
+<body>
+<div id=container>123456789</div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/reference/text-overflow-ellipsis-indent-001-ref.html b/testing/web-platform/tests/css/css-ui/reference/text-overflow-ellipsis-indent-001-ref.html
new file mode 100644
index 0000000000..660a7c4d52
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/reference/text-overflow-ellipsis-indent-001-ref.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<style>
+div {
+ text-overflow: ellipsis;
+ overflow: hidden;
+ font-size: 10px;
+}
+</style>
+<body>
+ <div style="padding-left: 3ch">123456</div>
+ <div style="padding-left: 3ch; width: 6ch">1234567</div>
+ <div style="padding-left: 6ch;">123</div>
+ <div style="padding-left: 6ch; width: 3ch">1234</div>
+ <div>123456789</div>
+ <div style="width: 9ch">1234567890</div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/resize-001.html b/testing/web-platform/tests/css/css-ui/resize-001.html
new file mode 100644
index 0000000000..99c7f05e17
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/resize-001.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: resize - both - both width and height adjusted</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<link rel="author" title="Shiyou Tan" href="mailto:shiyoux.tan@intel.com">
+<link rel="help" title="8.1. 'resize' property" href="http://www.w3.org/TR/css3-ui/#resize">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that both width and height adjusted when resize set both.">
+<style>
+ #test {
+ border: 2px solid blue;
+ height: 100px;
+ overflow: auto;
+ resize: both;
+ width: 100px;
+ }
+</style>
+<body>
+ <p>Test passes if both <strong>width</strong> and <strong>height</strong> of blue border square below can be adjusted(for instance by dragging the bottom-right corner).</p>
+ <div id="test"></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/resize-002.html b/testing/web-platform/tests/css/css-ui/resize-002.html
new file mode 100644
index 0000000000..cccab9c972
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/resize-002.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: resize - horizontal - only the width can be adjusted</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<link rel="author" title="Shiyou Tan" href="mailto:shiyoux.tan@intel.com">
+<link rel="help" title="8.1. 'resize' property" href="http://www.w3.org/TR/css3-ui/#resize">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that only the width of element can be adjusted when resize set horizontal">
+<style>
+ #test {
+ border: 2px solid blue;
+ height: 100px;
+ overflow: auto;
+ resize: horizontal;
+ width: 100px;
+ }
+</style>
+<body>
+ <p>Test passes if only the <strong>width</strong> of blue border square below can be adjusted(for instance by dragging the bottom-right corner).</p>
+ <div id="test"></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/resize-003.html b/testing/web-platform/tests/css/css-ui/resize-003.html
new file mode 100644
index 0000000000..9fe11ec8e6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/resize-003.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: resize - inherit - the resize property inherits parent element</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<link rel="author" title="Shiyou Tan" href="mailto:shiyoux.tan@intel.com">
+<link rel="help" title="8.1. 'resize' property" href="http://www.w3.org/TR/css3-ui/#resize">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the resize element inherits parent element">
+<style>
+ #parent {
+ border: 2px solid blue;
+ height: 150px;
+ overflow: auto;
+ resize: both;
+ width: 150px;
+ }
+ #child {
+ border: 2px solid green;
+ height: 75px;
+ overflow: auto;
+ resize: inherit;
+ width: 75px;
+ }
+</style>
+<body>
+ <p>Test passes if both the height and width of the <strong>green</strong> border square inside blue square can be adjusted(for instance by dragging the bottom-right corner).</p>
+ <div id="parent">
+ <div id="child"></div>
+ </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/resize-004.html b/testing/web-platform/tests/css/css-ui/resize-004.html
new file mode 100644
index 0000000000..3a1f561749
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/resize-004.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: resize initial value - none</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<link rel="author" title="Shiyou Tan" href="mailto:shiyoux.tan@intel.com">
+<link rel="help" title="8.1. 'resize' property" href="http://www.w3.org/TR/css3-ui/#resize">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that the resize property initial value is none">
+<style>
+ #test {
+ border: 2px solid blue;
+ height: 100px;
+ overflow: auto;
+ width: 100px;
+ }
+</style>
+<body>
+ <p>Test passes if <strong>neither</strong> the height <strong>nor</strong> the width of the blue border square can be adjusted(for instance by dragging the bottom-right corner).</p>
+ <div id="test"></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/resize-005.html b/testing/web-platform/tests/css/css-ui/resize-005.html
new file mode 100644
index 0000000000..7a9db60405
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/resize-005.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: resize - none - neither width nor height can be adjusted</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<link rel="author" title="Shiyou Tan" href="mailto:shiyoux.tan@intel.com">
+<link rel="help" title="8.1. 'resize' property" href="http://www.w3.org/TR/css3-ui/#resize">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that neither the width nor the height can be adjusted when resize set none">
+<style>
+ #test {
+ border: 2px solid blue;
+ height: 100px;
+ overflow: auto;
+ resize: none;
+ width: 100px;
+ }
+</style>
+<body>
+ <p>Test passes if <strong>neither</strong> the height <strong>nor</strong> the width of the blue border square can be adjusted(for instance by dragging the bottom-right corner).</p>
+ <div id="test"></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/resize-006.html b/testing/web-platform/tests/css/css-ui/resize-006.html
new file mode 100644
index 0000000000..8add5a18f5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/resize-006.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: resize - vertical - only the height can be adjusted</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<link rel="author" title="Shiyou Tan" href="mailto:shiyoux.tan@intel.com">
+<link rel="help" title="8.1. 'resize' property" href="http://www.w3.org/TR/css3-ui/#resize">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that only the height can be adjusted when resize set vertical">
+<style>
+ #test {
+ border: 2px solid blue;
+ height: 100px;
+ overflow: auto;
+ resize: vertical;
+ width: 100px;
+ }
+</style>
+<body>
+ <p>Test passes if only <strong>height</strong> of blue border square below can be adjusted(for instance by dragging the bottom-right corner).</p>
+ <div id="test"></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/resize-007.html b/testing/web-platform/tests/css/css-ui/resize-007.html
new file mode 100644
index 0000000000..c596e9dbba
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/resize-007.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: resize - invalid without overflow property</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<link rel="author" title="Shiyou Tan" href="mailto:shiyoux.tan@intel.com">
+<link rel="help" title="8.1. 'resize' property" href="http://www.w3.org/TR/css3-ui/#resize">
+<meta name="flags" content="interact">
+<meta name="assert" content="Test checks that resize property is invalid without overflow property">
+<style>
+ #test {
+ border: 2px solid blue;
+ height: 100px;
+ resize: both;
+ width: 100px;
+ }
+</style>
+<body>
+ <p>Test passes if <strong>neither</strong> the height <strong>nor</strong> the width of the blue border square can be adjusted(for instance by dragging the bottom-right corner).</p>
+ <div id="test"></div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/resize-008.html b/testing/web-platform/tests/css/css-ui/resize-008.html
new file mode 100644
index 0000000000..0b10155a4a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/resize-008.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: resizing images</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#resize">
+<meta name="flags" content="interact may">
+<meta name="assert" content="UAs may apply the resize property to <img> regardless of the value of the overflow property.">
+<style>
+img { resize: both; }
+</style>
+
+<p>Test passes if both <strong>width</strong> and <strong>height</strong> of the orange box below can be adjusted (for instance by dragging the bottom-right corner).</p>
+
+<img src="support/orange.png" alt="">
diff --git a/testing/web-platform/tests/css/css-ui/resize-009.html b/testing/web-platform/tests/css/css-ui/resize-009.html
new file mode 100644
index 0000000000..8662b1a72c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/resize-009.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: resizing sgv</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#resize">
+<meta name="flags" content="interact may">
+<meta name="assert" content="UAs may apply the resize property to <svg> regardless of the value of the overflow property.">
+<style>
+svg { resize: both; }
+</style>
+
+<p>Test passes if both <strong>width</strong> and <strong>height</strong> of the orange box below can be adjusted (for instance by dragging the bottom-right corner).</p>
+
+<svg width="100" height="100" viewBox="0 0 100 100"
+ xmlns="http://www.w3.org/2000/svg">
+<rect x="0" y="0" width="100" height="100" fill="orange"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-ui/resize-010.html b/testing/web-platform/tests/css/css-ui/resize-010.html
new file mode 100644
index 0000000000..b7cf271298
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/resize-010.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: resizing pictures</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#resize">
+<meta name="flags" content="interact may">
+<meta name="assert" content="UAs may apply the resize property to <picture> regardless of the value of the overflow property.">
+<style>
+picture { resize: both; }
+</style>
+
+<p>Test passes if both <strong>width</strong> and <strong>height</strong> of the orange box below can be adjusted (for instance by dragging the bottom-right corner).</p>
+
+<picture>
+ <source srcset="support/orange.svg" type="image/svg+xml">
+ <img src="support/orange.png" alt="">
+</picture>
diff --git a/testing/web-platform/tests/css/css-ui/resize-011.html b/testing/web-platform/tests/css/css-ui/resize-011.html
new file mode 100644
index 0000000000..71a8604366
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/resize-011.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: resizing objects</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#resize">
+<meta name="flags" content="interact may">
+<meta name="assert" content="UAs may apply the resize property to <object> regardless of the value of the overflow property.">
+<style>
+object { resize: both; }
+</style>
+
+<p>Test passes if both <strong>width</strong> and <strong>height</strong> of the orange box below can be adjusted (for instance by dragging the bottom-right corner).</p>
+
+<object data="support/orange.svg" type="image/svg+xml">
+ &lt;object&gt; is not supported. This test is non conclusive.
+</object>
diff --git a/testing/web-platform/tests/css/css-ui/resize-012.html b/testing/web-platform/tests/css/css-ui/resize-012.html
new file mode 100644
index 0000000000..717cb5a668
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/resize-012.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: resizing iframes</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#resize">
+<meta name="flags" content="interact may">
+<meta name="assert" content="UAs may apply the resize property to <iframes> regardless of the value of the overflow property.">
+<style>
+iframe { resize: both; }
+</style>
+
+<p>Test passes if both <strong>width</strong> and <strong>height</strong> of the box surrounding the orange box below can be adjusted (for instance by dragging the bottom-right corner).</p>
+
+<iframe src="support/orange.svg"></iframe>
diff --git a/testing/web-platform/tests/css/css-ui/resize-013.html b/testing/web-platform/tests/css/css-ui/resize-013.html
new file mode 100644
index 0000000000..d8cea0e674
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/resize-013.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: resizing canvas</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#resize">
+<meta name="flags" content="interact may">
+<meta name="assert" content="UAs may apply the resize property to <canvas> regardless of the value of the overflow property.">
+<style>
+canvas { resize: both; }
+</style>
+
+<p>Test passes if both <strong>width</strong> and <strong>height</strong> of the orange box below can be adjusted (for instance by dragging the bottom-right corner).</p>
+
+<canvas id="test" width="100" height="100">
+ &lt;canvas&gt; is not supported. This test is non conclusive.
+</canvas>
+<script>
+var canvas = document.getElementById('test');
+if (canvas.getContext) {
+ var ctx = canvas.getContext('2d');
+ ctx.fillStyle = '#FFA500';
+ ctx.fillRect (0, 0, 100, 100);
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/resize-014.html b/testing/web-platform/tests/css/css-ui/resize-014.html
new file mode 100644
index 0000000000..fdbd77e38a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/resize-014.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: resizing videos</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#resize">
+<meta name="flags" content="interact may">
+<meta name="assert" content="UAs may apply the resize property to <video> regardless of the value of the overflow property.">
+<style>
+video { resize: both; }
+</style>
+
+<p>Test passes if both <strong>width</strong> and <strong>height</strong> of the video below can be adjusted (for instance by dragging the bottom-right corner).</p>
+
+<video width="100" autoplay loop>
+ <source
+ src="support/test.webm"
+ type="video/webm">
+ <source
+ src="support/test.mp4"
+ type="video/mp4">
+ <source
+ src="support/test.ogv"
+ type="video/ogg">
+ &lt;video&gt; is not supported. This test is non conclusive.
+</video>
diff --git a/testing/web-platform/tests/css/css-ui/resize-015.html b/testing/web-platform/tests/css/css-ui/resize-015.html
new file mode 100644
index 0000000000..b613da261c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/resize-015.html
@@ -0,0 +1,54 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: resizing uses the style attribute</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#resize">
+<meta name="flags" content="interact">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+#test {
+ position: absolute;
+ width: 100px;
+ height: 100px;
+ background: orange;
+ overflow: hidden;
+ resize: both;
+}
+#target {
+ position: absolute;
+ width: 150px;
+ height: 150px;
+ background: blue;
+}
+#log { margin-top: 200px; }
+</style>
+
+<p>Enlarge the orange box so that it at least covers the blue box entirely, then press the “done” button.</p>
+<!-- There's no actual need to cover the whole box,
+ but doing so makes sure that the user has resized in both dimensions -->
+
+<button onclick="verify()">done</button>
+
+<div id="target"></div>
+<div id="test"></div>
+<div id=log></div>
+<script>
+setup({ explicit_done: true });
+function verify() {
+ test(
+ function(){
+ var test = document.getElementById("test");
+ assert_regexp_match(test.style.width, /px$/, "The width property of the style attribute should be set in pixels");
+ assert_not_equals(test.style.width, "100px", "The width should be different from the initial one");
+ assert_regexp_match(test.style.height, /px$/, "The height property of the style attribute should be set in pixels");
+ assert_not_equals(test.style.height, "100px", "The height should be different from the initial one");
+ }, "resize works by setting the width and height properties on the style attrbute in pixels");
+ test(
+ function(){
+ var test = document.getElementById("test");
+ assert_false(test.getAttribute("style").includes("important"));
+ }, "resize does not set !important");
+ done();
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/resize-016.html b/testing/web-platform/tests/css/css-ui/resize-016.html
new file mode 100644
index 0000000000..4bc00287f7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/resize-016.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: resizing horizontally uses the style attribute</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#resize">
+<meta name="flags" content="interact">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+#test {
+ width: 100px;
+ height: 100px;
+ background: orange;
+ overflow: hidden;
+ resize: horizontal;
+}
+</style>
+
+<p>Attempt to resize the orange box both horizontally and vertically, then press the “done” button
+(Resizing vertically is not expected to be possible but should still be attempted).</p>
+
+<button onclick="verify()">done</button>
+
+<div id="test"></div>
+<div id=log></div>
+<script>
+setup({ explicit_done: true });
+function verify() {
+ test(
+ function(){
+ var test = document.getElementById("test");
+ assert_regexp_match(test.style.width, /px$/, "The width property of the style attribute should be set in pixels");
+ assert_not_equals(test.style.width, "100px", "The width should be different from the initial one");
+ assert_equals(test.style.height, "", "The height property of the style attribute should not be set");
+ }, "horizontal resizing only affects the width properties on the style attrbute.");
+ done();
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/resize-017.html b/testing/web-platform/tests/css/css-ui/resize-017.html
new file mode 100644
index 0000000000..98a7d31f28
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/resize-017.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: resizing vertically uses the style attribute</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#resize">
+<meta name="flags" content="interact">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+#test {
+ width: 100px;
+ height: 100px;
+ background: orange;
+ overflow: hidden;
+ resize: vertical;
+}
+</style>
+
+<p>Attempt to resize the orange box both horizontally and vertically, then press the “done” button
+(Resizing horizontally is not expected to be possible but should still be attempted).</p>
+
+<button onclick="verify()">done</button>
+
+<div id="test"></div>
+<div id=log></div>
+<script>
+setup({ explicit_done: true });
+function verify() {
+ test(
+ function(){
+ var test = document.getElementById("test");
+ assert_equals(test.style.width, "", "The width property of the style attribute should not be set");
+ assert_regexp_match(test.style.height, /px$/, "The height property of the style attribute should be set in pixels");
+ assert_not_equals(test.style.height, "100px", "The height should be different from the initial one");
+ }, "horizontal resizing only affects the width properties on the style attrbute.");
+ done();
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/resize-018.html b/testing/web-platform/tests/css/css-ui/resize-018.html
new file mode 100644
index 0000000000..6e40d58307
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/resize-018.html
@@ -0,0 +1,52 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: removing the ability to resize keeps the resized dimentions</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#resize">
+<meta name="flags" content="interact">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+#test {
+ position: absolute;
+ width: 100px;
+ height: 100px;
+ background: orange;
+ overflow: hidden;
+ resize: both;
+}
+#target {
+ position: absolute;
+ width: 150px;
+ height: 150px;
+ background: blue;
+}
+#log { margin-top: 200px; }
+</style>
+
+<p>Enlarge the orange box so that it at least covers the blue box entirely, then press the “done” button.</p>
+<!-- There's no actual need to cover the whole box,
+ but doing so makes sure that the user has resized in both dimensions -->
+
+<button onclick="verify()">done</button>
+
+<div id="target"></div>
+<div id="test"></div>
+<div id=log></div>
+<script>
+setup({ explicit_done: true });
+function verify() {
+ test(
+ function(){
+ var test = document.getElementById("test");
+ var w = test.style.width;
+ var h = test.style.height;
+ assert_regexp_match(w, /px$/, "The width property of the style attribute should be set");
+ assert_regexp_match(h, /px$/, "The height property of the style attribute should be set");
+ document.styleSheets[0].cssRules[0].style.resize= "none";
+ assert_equals(test.style.width, w, "The width property of the style attribute should still be set after removing ability to resize");
+ assert_equals(test.style.height, h, "The height property of the style attribute should still be set after removing ability to resize");
+ }, "Removing the ability to resize an element does not reset its size");
+ done();
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/resize-019.html b/testing/web-platform/tests/css/css-ui/resize-019.html
new file mode 100644
index 0000000000..4a6ff7d7d3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/resize-019.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: resizing constraints</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#resize">
+<meta name="flags" content="interact">
+<meta name="assert" content="UAs must not place constrains on resizing that would prevent an element from becoming smaller than its original size.">
+<style>
+#test {
+ position: absolute;
+ background: orange;
+ height: 100px;
+ width: 100px;
+ overflow: auto;
+ resize: both;
+}
+#ref {
+ position: absolute;
+ background: green;
+ height: 100px;
+ width: 100px;
+}
+</style>
+
+<p>The test passes is you can resize the orange box to be smaller than its initial size.
+For reference there is an unresizable green box beneath it.
+If you can uncover it, the test passes.</p>
+
+<div id=ref></div>
+<div id=test></div>
diff --git a/testing/web-platform/tests/css/css-ui/resize-020.html b/testing/web-platform/tests/css/css-ui/resize-020.html
new file mode 100644
index 0000000000..807f788b0a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/resize-020.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: resizing min-height/width constraints</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#resize">
+<meta name="flags" content="interact">
+<meta name="assert" content="min-width and min-height constraints are honored.">
+<style>
+#test {
+ position: absolute;
+ background: orange;
+ min-height: 50px;
+ min-width: 50px;
+ height: 100px;
+ width: 100px;
+ overflow: auto;
+ resize: both;
+}
+#ref {
+ position: absolute;
+ background: red;
+ height: 50px;
+ width: 50px;
+}
+</style>
+
+<p>Resize the orange box below to the smallest size possible.
+There is a smaller unresizable red box beneath it.</p>
+<p>If you can uncover any amount of red, the test fails.
+If you cannot resize the orange box, the test also fails.
+Otherwise, the test passes.</p>
+
+<div id=ref></div>
+<div id=test></div>
diff --git a/testing/web-platform/tests/css/css-ui/resize-021.html b/testing/web-platform/tests/css/css-ui/resize-021.html
new file mode 100644
index 0000000000..709551f159
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/resize-021.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: resizing min-height/width constraints</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#resize">
+<meta name="flags" content="interact">
+<meta name="assert" content="max-width and max-height constraints are honored.">
+<style>
+#test {
+ position: absolute;
+ background: linear-gradient(to right, transparent 200px, red 200px) no-repeat,
+ linear-gradient(to bottom, transparent 200px, red 200px) no-repeat,
+ orange;
+ max-height: 200px;
+ max-width: 200px;
+ height: 100px;
+ width: 100px;
+ overflow: auto;
+ resize: both;
+}
+#ref {
+ position: absolute;
+ background: blue;
+ height: 300px;
+ width: 300px;
+}
+</style>
+
+<p>Attempt to resize the orange box below so that it is large enough to fully cover the blue one.</p>
+<p>If you cannot enlarge the orange box, the test fails.<br>
+If you can fully cover the blue box, the test fails.<br>
+Even if the blue box is not fully covered, if you see any red, the test fails.<br>
+Otherwise, the test passes.</p>
+
+<div id=ref></div>
+<div id=test></div>
diff --git a/testing/web-platform/tests/css/css-ui/resize-change-margin-ref.html b/testing/web-platform/tests/css/css-ui/resize-change-margin-ref.html
new file mode 100644
index 0000000000..b326c5f8d2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/resize-change-margin-ref.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<style>body { margin: 0 }</style>
+<div style="height: 40px"></div>
+<div style="width: 100px; height: 100px; resize: both; overflow: auto; border: 1px solid blue"></div>
diff --git a/testing/web-platform/tests/css/css-ui/resize-change-margin.html b/testing/web-platform/tests/css/css-ui/resize-change-margin.html
new file mode 100644
index 0000000000..a957ac931e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/resize-change-margin.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#resize">
+<link rel="match" href="resize-change-margin-ref.html">
+<style>body { margin: 0 }</style>
+<div id="target" style="width: 100px; height: 100px; resize: both; overflow: auto; border: 1px solid blue"></div>
+<script>
+requestAnimationFrame(() => {
+ requestAnimationFrame(() => {
+ target.style.marginTop = "40px";
+ document.documentElement.classList.remove("reftest-wait");
+ });
+});
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/resize-child-will-change-transform-ref.html b/testing/web-platform/tests/css/css-ui/resize-child-will-change-transform-ref.html
new file mode 100644
index 0000000000..36f39fc19b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/resize-child-will-change-transform-ref.html
@@ -0,0 +1,3 @@
+<!DOCTYPE html>
+<div style="width: 200px; height: 200px; overflow: hidden; resize: both; background: yellow">
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/resize-child-will-change-transform.html b/testing/web-platform/tests/css/css-ui/resize-child-will-change-transform.html
new file mode 100644
index 0000000000..b8adf53b04
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/resize-child-will-change-transform.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<title>CSS resize: child with will-change: transform</title>
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#resize">
+<link rel="author" title="Xianzhu Wang" href="mailto:wangxianzhu@chromium.org">
+<link rel="match" href="resize-child-will-change-transform-ref.html">
+<div id="resize" style="width: 200px; height: 200px; overflow: auto; resize: both">
+ <div id="will-change" style="width: 100%; height: 100%; background: yellow; will-change: transform"></div>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/resize-generated-content.html b/testing/web-platform/tests/css/css-ui/resize-generated-content.html
new file mode 100644
index 0000000000..462a81118b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/resize-generated-content.html
@@ -0,0 +1,19 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: resize - generated content</title>
+<meta name="assert" content="The resize property should not apply to generated content, the behavior is undefined">
+<link rel="help" href="http://drafts.csswg.org/css-ui/#resize">
+<link rel="match" href="../reference/ref-filled-green-100px-square-only.html">
+<style>
+ #test::before {
+ content: "";
+ display: block;
+ width: 100px;
+ height: 100px;
+ overflow: hidden;
+ resize: both;
+ background: green;
+ }
+</style>
+<p>Test passes if there is a filled green square.</p>
+<div id="test"></div>
diff --git a/testing/web-platform/tests/css/css-ui/select-cursor-001-manual.html b/testing/web-platform/tests/css/css-ui/select-cursor-001-manual.html
new file mode 100644
index 0000000000..30aa9b20f8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/select-cursor-001-manual.html
@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <meta charset="utf-8">
+ <title>CSS Test (User Interface): cursor property and select element</title>
+ <link rel="author" title="Chris Rebert" href="http://chrisrebert.com">
+ <link rel="help" href="https://drafts.csswg.org/css-ui-3/#cursor">
+ <link rel="help" href="https://drafts.csswg.org/css2/ui.html#cursor-props">
+ <meta name="flags" content="HTMLonly interact">
+ <meta name="assert" content="Hovering the pointer over a select menu on top of an element with a cursor set should not display said cursor">
+ <style>
+div {
+ cursor: help;
+ height: 200px;
+ width: 200px;
+ background-color: blue;
+}
+ </style>
+</head>
+<body>
+ <ol>
+ <li>If clicking a &lt;select&gt; opens a native widget which is modal, then SKIP this test.</li>
+ <li>Click on the &lt;select&gt; below. A selection widget appears.</li>
+ <li>Move the pointer so that it is hovering within the intersection area of the selection widget and the blue box below.</li>
+ <li>If the "help" cursor is displayed, then the test result is FAILED. Otherwise, it is PASSED.</li>
+ </ol>
+ <select>
+ <option>AAAAAAAA</option>
+ <option>BBBBBBBB</option>
+ <option>CCCCCCCC</option>
+ <option>DDDDDDDD</option>
+ <option>EEEEEEEE</option>
+ <option>FFFFFFFF</option>
+ <option>GGGGGGGG</option>
+ <option>HHHHHHHH</option>
+ </select>
+ <div></div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/support/1x1-red.png b/testing/web-platform/tests/css/css-ui/support/1x1-red.png
new file mode 100644
index 0000000000..6bd73ac101
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/1x1-red.png
Binary files differ
diff --git a/testing/web-platform/tests/css/css-ui/support/PTS/PngSuite.LICENSE b/testing/web-platform/tests/css/css-ui/support/PTS/PngSuite.LICENSE
new file mode 100644
index 0000000000..8d4d1d0777
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/PTS/PngSuite.LICENSE
@@ -0,0 +1,9 @@
+PngSuite
+--------
+
+Permission to use, copy, modify and distribute these images for any
+purpose and without fee is hereby granted.
+
+
+(c) Willem van Schaik, 1996, 2011
+
diff --git a/testing/web-platform/tests/css/css-ui/support/PTS/PngSuite.README b/testing/web-platform/tests/css/css-ui/support/PTS/PngSuite.README
new file mode 100644
index 0000000000..94df6ccffa
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/PTS/PngSuite.README
@@ -0,0 +1,25 @@
+ PNGSUITE
+----------------
+
+ testset for PNG-(de)coders
+ created by Willem van Schaik
+------------------------------------
+
+This is a collection of graphics images created to test the png applications
+like viewers, converters and editors. All (as far as that is possible)
+formats supported by the PNG standard are represented.
+
+The suite consists of the following files:
+
+- PngSuite.README - this file
+- PngSuite.LICENSE - the PngSuite is freeware
+- PngSuite.png - image with PngSuite logo
+- PngSuite.tgz - archive of all PNG testfiles
+- PngSuite.zip - same in .zip format for PCs
+
+
+--------
+ (c) Willem van Schaik
+ willem@schaik.com
+ Calgary, April 2011
+
diff --git a/testing/web-platform/tests/css/css-ui/support/PTS/PngSuite.png b/testing/web-platform/tests/css/css-ui/support/PTS/PngSuite.png
new file mode 100644
index 0000000000..205460d828
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/PTS/PngSuite.png
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new file mode 100644
index 0000000000..556fa72704
--- /dev/null
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new file mode 100644
index 0000000000..ce09821ef1
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new file mode 100644
index 0000000000..3853273f93
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new file mode 100644
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diff --git a/testing/web-platform/tests/css/css-ui/support/PTS/z06n2c08.png b/testing/web-platform/tests/css/css-ui/support/PTS/z06n2c08.png
new file mode 100644
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--- /dev/null
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diff --git a/testing/web-platform/tests/css/css-ui/support/PTS/z09n2c08.png b/testing/web-platform/tests/css/css-ui/support/PTS/z09n2c08.png
new file mode 100644
index 0000000000..5f191a78ee
--- /dev/null
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diff --git a/testing/web-platform/tests/css/css-ui/support/cursors/.htaccess b/testing/web-platform/tests/css/css-ui/support/cursors/.htaccess
new file mode 100644
index 0000000000..016048b735
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/cursors/.htaccess
@@ -0,0 +1,3 @@
+<Files "woolly-64.svgz">
+ Header set Content-Encoding gzip
+</Files>
diff --git a/testing/web-platform/tests/css/css-ui/support/cursors/BlueButterfly.ani b/testing/web-platform/tests/css/css-ui/support/cursors/BlueButterfly.ani
new file mode 100644
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--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/cursors/BlueButterfly.ani
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diff --git a/testing/web-platform/tests/css/css-ui/support/cursors/arrows.ico b/testing/web-platform/tests/css/css-ui/support/cursors/arrows.ico
new file mode 100644
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--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/cursors/arrows.ico
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diff --git a/testing/web-platform/tests/css/css-ui/support/cursors/arrows.png b/testing/web-platform/tests/css/css-ui/support/cursors/arrows.png
new file mode 100644
index 0000000000..c8685dcafa
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/cursors/arrows.png
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diff --git a/testing/web-platform/tests/css/css-ui/support/cursors/basn0g08.gif b/testing/web-platform/tests/css/css-ui/support/cursors/basn0g08.gif
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--- /dev/null
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diff --git a/testing/web-platform/tests/css/css-ui/support/cursors/fail.cur b/testing/web-platform/tests/css/css-ui/support/cursors/fail.cur
new file mode 100644
index 0000000000..721a4ccd64
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/cursors/fail.cur
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diff --git a/testing/web-platform/tests/css/css-ui/support/cursors/fail.png b/testing/web-platform/tests/css/css-ui/support/cursors/fail.png
new file mode 100644
index 0000000000..af0c1578b9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/cursors/fail.png
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diff --git a/testing/web-platform/tests/css/css-ui/support/cursors/not-an-image.foo b/testing/web-platform/tests/css/css-ui/support/cursors/not-an-image.foo
new file mode 100644
index 0000000000..b4bad3e480
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/cursors/not-an-image.foo
@@ -0,0 +1 @@
+I am not an actual image file.
diff --git a/testing/web-platform/tests/css/css-ui/support/cursors/rainbow.jpg b/testing/web-platform/tests/css/css-ui/support/cursors/rainbow.jpg
new file mode 100644
index 0000000000..09d5f377e6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/cursors/rainbow.jpg
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index 0000000000..a2bffcb8b9
--- /dev/null
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diff --git a/testing/web-platform/tests/css/css-ui/support/cursors/woolly-64.cur b/testing/web-platform/tests/css/css-ui/support/cursors/woolly-64.cur
new file mode 100644
index 0000000000..e9a2010e0f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/cursors/woolly-64.cur
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diff --git a/testing/web-platform/tests/css/css-ui/support/cursors/woolly-64.ico b/testing/web-platform/tests/css/css-ui/support/cursors/woolly-64.ico
new file mode 100644
index 0000000000..9dc4a9b5ec
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/cursors/woolly-64.ico
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diff --git a/testing/web-platform/tests/css/css-ui/support/cursors/woolly-64.png b/testing/web-platform/tests/css/css-ui/support/cursors/woolly-64.png
new file mode 100644
index 0000000000..30cabffbd7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/cursors/woolly-64.png
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diff --git a/testing/web-platform/tests/css/css-ui/support/cursors/woolly-64.svg b/testing/web-platform/tests/css/css-ui/support/cursors/woolly-64.svg
new file mode 100644
index 0000000000..738cdbb343
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/cursors/woolly-64.svg
@@ -0,0 +1,60 @@
+<svg width="64px" height="64px" viewBox="-140 -30 1280 1280"
+ xmlns="http://www.w3.org/2000/svg">
+
+<title>Woolly le Mouton</title>
+
+<desc>
+Woolly is a sheep, originally drawn by Coralie Mercier on 2 March 2000
+and scanned and converted to SVG by Bert Bos, between 3 March 2000 and
+5 July 2000.
+</desc>
+
+
+
+<!-- the pink parts of the sheep -->
+
+<path style="fill:#ffcc99; stroke:none" d="M569 102.193C572.25 107.814 579.249 118.2 578.581 125C578.215 128.721 566.838 148.105 564.088 152C562.317 154.509 559.003 158.23 558.022 161C555.823 167.214 559.614 176.9 567.001 176.21C569.364 176.215 571.615 175.943 574 176.21C578.433 176.218 582.567 177.782 587 177.961C594.738 178.273 601.492 175.302 609 174.287C640.067 170.089 665.778 165.843 687.919 141.024C692.352 136.056 696.57 132.82 698 126L661 119.323L650 118.241L631 112.533L601 102.193L589 102.193L569 102.193zM89 215C92.4749 217.69 98.8285 221.551 102.912 223.027C105.848 224.089 109.041 223.799 112.004 224.999C114.827 226.142 117.14 228.239 120 229.281C128.704 232.452 139.753 233.888 149 234.673C153.713 235.074 158.251 233.22 163 233.665C165.044 233.638 166.932 233.966 169 233.665C182.069 232.879 194.177 228.878 206 223.46C213.923 219.829 223.082 214.771 230 209.474C233.872 206.509 247.672 193.748 250.999 192.845C254.709 191.837 256.865 194.508 259 197C263.369 193.844 271.995 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+
+<metadata>
+ <!-- This metadata is in XMP -->
+ <?xpacket begin="" id="W5M0MpCehiHzreSzNTczkc9d"?>
+ <rdf:RDF
+ xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+ xmlns:dc="http://purl.org/dc/elements/1.1/">
+ <rdf:Description rdf:about="">
+ <dc:rights>
+ <rdf:Bag>
+ <rdf:li xml:lang="en">
+
+ Copyright © 2000 Coralie Mercier &amp; Bert Bos. This work is
+ licensed under a Creative Commons
+ Attribution-NonCommercial-NoDerivs 3.0 Unported License. Please,
+ contact bert@w3.org or coralie@w3.org for licenses for other
+ usages.
+
+ </rdf:li>
+ <rdf:li xml:lang="zxx"
+ rdf:resource="http://creativecommons.org/licenses/by-nc-nd/3.0/"/>
+ </rdf:Bag>
+ </dc:rights>
+ <dc:creator>
+ <rdf:Bag>
+ <rdf:li>Coralie Mercier</rdf:li>
+ <rdf:li>Bert Bos</rdf:li>
+ </rdf:Bag>
+ </dc:creator>
+ <dc:date>2000-03-02</dc:date>
+ </rdf:Description>
+ </rdf:RDF>
+ <?xpacket end="w"?>
+</metadata>
+
+</svg>
diff --git a/testing/web-platform/tests/css/css-ui/support/cursors/woolly-64.svgz b/testing/web-platform/tests/css/css-ui/support/cursors/woolly-64.svgz
new file mode 100644
index 0000000000..5b3686579b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/cursors/woolly-64.svgz
Binary files differ
diff --git a/testing/web-platform/tests/css/css-ui/support/cursors/woolly-64.svgz.headers b/testing/web-platform/tests/css/css-ui/support/cursors/woolly-64.svgz.headers
new file mode 100644
index 0000000000..9e2c13e632
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/cursors/woolly-64.svgz.headers
@@ -0,0 +1 @@
+Content-Encoding: gzip
diff --git a/testing/web-platform/tests/css/css-ui/support/cursors/woolly.svg b/testing/web-platform/tests/css/css-ui/support/cursors/woolly.svg
new file mode 100644
index 0000000000..de84a62172
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/cursors/woolly.svg
@@ -0,0 +1,60 @@
+<svg viewBox="-140 -30 1280 1280"
+ xmlns="http://www.w3.org/2000/svg">
+
+<title>Woolly le Mouton</title>
+
+<desc>
+Woolly is a sheep, originally drawn by Coralie Mercier on 2 March 2000
+and scanned and converted to SVG by Bert Bos, between 3 March 2000 and
+5 July 2000.
+</desc>
+
+
+
+<!-- the pink parts of the sheep -->
+
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+
+<metadata>
+ <!-- This metadata is in XMP -->
+ <?xpacket begin="" id="W5M0MpCehiHzreSzNTczkc9d"?>
+ <rdf:RDF
+ xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+ xmlns:dc="http://purl.org/dc/elements/1.1/">
+ <rdf:Description rdf:about="">
+ <dc:rights>
+ <rdf:Bag>
+ <rdf:li xml:lang="en">
+
+ Copyright © 2000 Coralie Mercier &amp; Bert Bos. This work is
+ licensed under a Creative Commons
+ Attribution-NonCommercial-NoDerivs 3.0 Unported License. Please,
+ contact bert@w3.org or coralie@w3.org for licenses for other
+ usages.
+
+ </rdf:li>
+ <rdf:li xml:lang="zxx"
+ rdf:resource="http://creativecommons.org/licenses/by-nc-nd/3.0/"/>
+ </rdf:Bag>
+ </dc:rights>
+ <dc:creator>
+ <rdf:Bag>
+ <rdf:li>Coralie Mercier</rdf:li>
+ <rdf:li>Bert Bos</rdf:li>
+ </rdf:Bag>
+ </dc:creator>
+ <dc:date>2000-03-02</dc:date>
+ </rdf:Description>
+ </rdf:RDF>
+ <?xpacket end="w"?>
+</metadata>
+
+</svg>
diff --git a/testing/web-platform/tests/css/css-ui/support/green.ico b/testing/web-platform/tests/css/css-ui/support/green.ico
new file mode 100644
index 0000000000..691f61166f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/green.ico
Binary files differ
diff --git a/testing/web-platform/tests/css/css-ui/support/h100.svg b/testing/web-platform/tests/css/css-ui/support/h100.svg
new file mode 100644
index 0000000000..0d780f46ee
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/h100.svg
@@ -0,0 +1,2 @@
+<svg style="background: green" xmlns="http://www.w3.org/2000/svg" height="100">
+<g id='testmeta' xmlns:html='http://www.w3.org/1999/xhtml'><html:link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/" /></g></svg>
diff --git a/testing/web-platform/tests/css/css-ui/support/h100_r1-1.svg b/testing/web-platform/tests/css/css-ui/support/h100_r1-1.svg
new file mode 100644
index 0000000000..5bd9d1e630
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/h100_r1-1.svg
@@ -0,0 +1,2 @@
+<svg style="background: green" xmlns="http://www.w3.org/2000/svg" height="100" viewBox="0 0 100 100">
+<g id='testmeta' xmlns:html='http://www.w3.org/1999/xhtml'><html:link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/" /></g></svg>
diff --git a/testing/web-platform/tests/css/css-ui/support/nav-dir-target-001-frame.html b/testing/web-platform/tests/css/css-ui/support/nav-dir-target-001-frame.html
new file mode 100644
index 0000000000..ad10311866
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/nav-dir-target-001-frame.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - frame with #finish to ignore</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="reviewer" title="Leif Arne Storset" href="mailto:lstorset@opera.com">
+<link rel="reviewer" title="Rebecca Hauck" href="mailto:rhauck@adobe.com"><!-- 07-18-2013 -->
+<body>
+ <p><a href="" id="finish">ignore</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/support/nav-dir-target-002-frame.html b/testing/web-platform/tests/css/css-ui/support/nav-dir-target-002-frame.html
new file mode 100644
index 0000000000..63095a8646
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/nav-dir-target-002-frame.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - frame with: #start { nav-down: #finish root }</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="reviewer" title="Leif Arne Storset" href="mailto:lstorset@opera.com">
+<link rel="reviewer" title="Rebecca Hauck" href="mailto:rhauck@adobe.com"><!-- 07-18-2013 -->
+<style>
+ #start {
+ nav-down: #finish root;
+ }
+</style>
+<body>
+ <p><a href="" id="start">START</a> <a href="" id="finish">ignore</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/support/nav-dir-target-003-frame.html b/testing/web-platform/tests/css/css-ui/support/nav-dir-target-003-frame.html
new file mode 100644
index 0000000000..a477638553
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/nav-dir-target-003-frame.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - frame with target #finish</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="reviewer" title="Leif Arne Storset" href="mailto:lstorset@opera.com">
+<link rel="reviewer" title="Rebecca Hauck" href="mailto:rhauck@adobe.com"><!-- 07-18-2013 -->
+<body>
+ <p><a href="" id="finish">FINISH</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/support/nav-dir-target-004-frame.html b/testing/web-platform/tests/css/css-ui/support/nav-dir-target-004-frame.html
new file mode 100644
index 0000000000..024c95610f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/nav-dir-target-004-frame.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - frame with: #start { nav-up: #finish "frame" }</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="reviewer" title="Leif Arne Storset" href="mailto:lstorset@opera.com">
+<link rel="reviewer" title="Rebecca Hauck" href="mailto:rhauck@adobe.com"><!-- 07-18-2013 -->
+<style>
+ #start {
+ nav-up: #finish "frame";
+ }
+</style>
+<body>
+ <p><a href="" id="start">START</a> <a href="" id="finish">FINISH</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/support/nav-dir-target-005-frame.html b/testing/web-platform/tests/css/css-ui/support/nav-dir-target-005-frame.html
new file mode 100644
index 0000000000..caa9b60c8c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/nav-dir-target-005-frame.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - frame with: #start { nav-left: #finish "sibling" }</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="reviewer" title="Leif Arne Storset" href="mailto:lstorset@opera.com">
+<link rel="reviewer" title="Rebecca Hauck" href="mailto:rhauck@adobe.com"><!-- 07-18-2013 -->
+<style>
+ #start {
+ nav-left: #finish "sibling";
+ }
+</style>
+<body>
+ <p><a href="" id="finish">ignore</a> <a href="" id="start">START</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/support/nav-down-009-frame.html b/testing/web-platform/tests/css/css-ui/support/nav-down-009-frame.html
new file mode 100644
index 0000000000..f11d32ed76
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/nav-down-009-frame.html
@@ -0,0 +1,7 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - frame with #finish to ignore</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<body>
+ <p><a href="" id="finish">ignore</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/support/nav-down-010-frame.html b/testing/web-platform/tests/css/css-ui/support/nav-down-010-frame.html
new file mode 100644
index 0000000000..98d6c611f5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/nav-down-010-frame.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - frame with: #start { nav-down: #finish root }</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<style>
+ #start {
+ nav-down: #finish root;
+ }
+</style>
+<body>
+ <p><a href="" id="start">START</a></p>
+ <p><a href="" id="finish">ignore</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/support/nav-down-011-frame.html b/testing/web-platform/tests/css/css-ui/support/nav-down-011-frame.html
new file mode 100644
index 0000000000..ce69bc810d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/nav-down-011-frame.html
@@ -0,0 +1,7 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - frame with target #finish</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<body>
+ <p><a href="" id="finish">FINISH</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/support/nav-down-012-frame.html b/testing/web-platform/tests/css/css-ui/support/nav-down-012-frame.html
new file mode 100644
index 0000000000..3854596cc4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/nav-down-012-frame.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - frame with: #start { nav-down: #finish "frame" }</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<style>
+ #start {
+ nav-down: #finish "frame";
+ }
+</style>
+<body>
+ <p><a href="" id="finish">FINISH</a></p>
+ <p><a href="" id="start">START</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/support/nav-down-013-frame.html b/testing/web-platform/tests/css/css-ui/support/nav-down-013-frame.html
new file mode 100644
index 0000000000..868281fd10
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/nav-down-013-frame.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - frame with: #start { nav-down: #finish "sibling" }</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<style>
+ #start {
+ nav-down: #finish "sibling";
+ }
+</style>
+<body>
+ <p>
+ <a href="" id="start">START</a>
+ </p>
+ <p>
+ <a href="" id="finish">ignore</a>
+ </p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/support/nav-left-009-frame.html b/testing/web-platform/tests/css/css-ui/support/nav-left-009-frame.html
new file mode 100644
index 0000000000..f11d32ed76
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/nav-left-009-frame.html
@@ -0,0 +1,7 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - frame with #finish to ignore</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<body>
+ <p><a href="" id="finish">ignore</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/support/nav-left-010-frame.html b/testing/web-platform/tests/css/css-ui/support/nav-left-010-frame.html
new file mode 100644
index 0000000000..e09a3750a9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/nav-left-010-frame.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - frame with: #start { nav-left: #finish root }</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<style>
+ #start {
+ nav-left: #finish root;
+ }
+</style>
+<body>
+ <p><a href="" id="start">START</a> <a href="" id="finish">ignore</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/support/nav-left-011-frame.html b/testing/web-platform/tests/css/css-ui/support/nav-left-011-frame.html
new file mode 100644
index 0000000000..ce69bc810d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/nav-left-011-frame.html
@@ -0,0 +1,7 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - frame with target #finish</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<body>
+ <p><a href="" id="finish">FINISH</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/support/nav-left-012-frame.html b/testing/web-platform/tests/css/css-ui/support/nav-left-012-frame.html
new file mode 100644
index 0000000000..94a0fe5ed8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/nav-left-012-frame.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - frame with: #start { nav-left: #finish "frame" }</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<style>
+ #start {
+ nav-left: #finish "frame";
+ }
+</style>
+<body>
+ <p><a href="" id="start">START</a> <a href="" id="finish">FINISH</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/support/nav-left-013-frame.html b/testing/web-platform/tests/css/css-ui/support/nav-left-013-frame.html
new file mode 100644
index 0000000000..e52c9482f4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/nav-left-013-frame.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - frame with: #start { nav-left: #finish "sibling" }</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<style>
+ #start {
+ nav-left: #finish "sibling";
+ }
+</style>
+<body>
+ <p><a href="" id="finish">ignore</a> <a href="" id="start">START</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/support/nav-right-009-frame.html b/testing/web-platform/tests/css/css-ui/support/nav-right-009-frame.html
new file mode 100644
index 0000000000..f11d32ed76
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/nav-right-009-frame.html
@@ -0,0 +1,7 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - frame with #finish to ignore</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<body>
+ <p><a href="" id="finish">ignore</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/support/nav-right-010-frame.html b/testing/web-platform/tests/css/css-ui/support/nav-right-010-frame.html
new file mode 100644
index 0000000000..3173257611
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/nav-right-010-frame.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - frame with: #start { nav-right: #finish root }</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<style>
+ #start {
+ nav-right: #finish root;
+ }
+</style>
+<body>
+ <p><a href="" id="finish">ignore</a> <a href="" id="start">START</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/support/nav-right-011-frame.html b/testing/web-platform/tests/css/css-ui/support/nav-right-011-frame.html
new file mode 100644
index 0000000000..ce69bc810d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/nav-right-011-frame.html
@@ -0,0 +1,7 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - frame with target #finish</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<body>
+ <p><a href="" id="finish">FINISH</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/support/nav-right-012-frame.html b/testing/web-platform/tests/css/css-ui/support/nav-right-012-frame.html
new file mode 100644
index 0000000000..71f8b3cfb9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/nav-right-012-frame.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - frame with: #start { nav-right: #finish "frame" }</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<style>
+ #start {
+ nav-right: #finish "frame";
+ }
+</style>
+<body>
+ <p><a href="" id="finish">FINISH</a> <a href="" id="start">START</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/support/nav-right-013-frame.html b/testing/web-platform/tests/css/css-ui/support/nav-right-013-frame.html
new file mode 100644
index 0000000000..e133d15473
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/nav-right-013-frame.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - frame with: #start { nav-right: #finish "sibling" }</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<style>
+ #start {
+ nav-right: #finish "sibling";
+ }
+</style>
+<body>
+ <p><a href="" id="finish">ignore</a> <a href="" id="start">START</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/support/nav-up-009-frame.html b/testing/web-platform/tests/css/css-ui/support/nav-up-009-frame.html
new file mode 100644
index 0000000000..f11d32ed76
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/nav-up-009-frame.html
@@ -0,0 +1,7 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - frame with #finish to ignore</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<body>
+ <p><a href="" id="finish">ignore</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/support/nav-up-010-frame.html b/testing/web-platform/tests/css/css-ui/support/nav-up-010-frame.html
new file mode 100644
index 0000000000..ba04833c3b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/nav-up-010-frame.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - frame with: #start { nav-up: #finish root }</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<style>
+ #start {
+ nav-up: #finish root;
+ }
+</style>
+<body>
+ <p><a href="" id="finish">ignore</a></p>
+ <p><a href="" id="start">START</a> </p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/support/nav-up-011-frame.html b/testing/web-platform/tests/css/css-ui/support/nav-up-011-frame.html
new file mode 100644
index 0000000000..ce69bc810d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/nav-up-011-frame.html
@@ -0,0 +1,7 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - frame with target #finish</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<body>
+ <p><a href="" id="finish">FINISH</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/support/nav-up-012-frame.html b/testing/web-platform/tests/css/css-ui/support/nav-up-012-frame.html
new file mode 100644
index 0000000000..d0375869f2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/nav-up-012-frame.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - frame with: #start { nav-up: #finish "frame" }</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<style>
+ #start {
+ nav-up: #finish "frame";
+ }
+</style>
+<body>
+ <p><a href="" id="start">START</a></p>
+ <p><a href="" id="finish">FINISH</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/support/nav-up-013-frame.html b/testing/web-platform/tests/css/css-ui/support/nav-up-013-frame.html
new file mode 100644
index 0000000000..e9af2dbf92
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/nav-up-013-frame.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: Directional Focus Navigation - frame with: #start { nav-up: #finish "sibling" }</title>
+<link rel="author" title="Jorrit Vermeiren" href="mailto:jorritv@opera.com">
+<link rel="author" title="Daniel Glazman" href="mailto:d.glazman@partner.samsung.com">
+<style>
+ #start {
+ nav-up: #finish "sibling";
+ }
+</style>
+<body>
+ <p><a href="" id="finish">ignore</a></p>
+ <p><a href="" id="start">START</a></p>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/support/orange.png b/testing/web-platform/tests/css/css-ui/support/orange.png
new file mode 100644
index 0000000000..0a08d3ae5d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/orange.png
Binary files differ
diff --git a/testing/web-platform/tests/css/css-ui/support/orange.svg b/testing/web-platform/tests/css/css-ui/support/orange.svg
new file mode 100644
index 0000000000..56346a8295
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/orange.svg
@@ -0,0 +1,4 @@
+<svg width="100" height="100" viewBox="0 0 100 100"
+ xmlns="http://www.w3.org/2000/svg">
+<rect x="0" y="0" width="100" height="100" fill="orange"/>
+</svg>
diff --git a/testing/web-platform/tests/css/css-ui/support/r1-1.svg b/testing/web-platform/tests/css/css-ui/support/r1-1.svg
new file mode 100644
index 0000000000..84f1b9532b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/r1-1.svg
@@ -0,0 +1,2 @@
+<svg style="background: green" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100">
+<g id='testmeta' xmlns:html='http://www.w3.org/1999/xhtml'><html:link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/" /></g></svg>
diff --git a/testing/web-platform/tests/css/css-ui/support/red.ico b/testing/web-platform/tests/css/css-ui/support/red.ico
new file mode 100644
index 0000000000..22a7b36fe3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/red.ico
Binary files differ
diff --git a/testing/web-platform/tests/css/css-ui/support/test.mp4 b/testing/web-platform/tests/css/css-ui/support/test.mp4
new file mode 100644
index 0000000000..1b0e7b56a6
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/test.mp4
Binary files differ
diff --git a/testing/web-platform/tests/css/css-ui/support/test.ogv b/testing/web-platform/tests/css/css-ui/support/test.ogv
new file mode 100644
index 0000000000..50d59dfb38
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/test.ogv
Binary files differ
diff --git a/testing/web-platform/tests/css/css-ui/support/test.webm b/testing/web-platform/tests/css/css-ui/support/test.webm
new file mode 100644
index 0000000000..3a601805d7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/test.webm
Binary files differ
diff --git a/testing/web-platform/tests/css/css-ui/support/w100.svg b/testing/web-platform/tests/css/css-ui/support/w100.svg
new file mode 100644
index 0000000000..2c2642e590
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/w100.svg
@@ -0,0 +1,2 @@
+<svg style="background: green" xmlns="http://www.w3.org/2000/svg" width="100">
+<g id='testmeta' xmlns:html='http://www.w3.org/1999/xhtml'><html:link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/" /></g></svg>
diff --git a/testing/web-platform/tests/css/css-ui/support/w100_h100.svg b/testing/web-platform/tests/css/css-ui/support/w100_h100.svg
new file mode 100644
index 0000000000..29aa998db1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/w100_h100.svg
@@ -0,0 +1,2 @@
+<svg style="background: green" xmlns="http://www.w3.org/2000/svg" width="100" height="100">
+<g id='testmeta' xmlns:html='http://www.w3.org/1999/xhtml'><html:link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/" /></g></svg>
diff --git a/testing/web-platform/tests/css/css-ui/support/w100_r1-1.svg b/testing/web-platform/tests/css/css-ui/support/w100_r1-1.svg
new file mode 100644
index 0000000000..3bb399b73f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/support/w100_r1-1.svg
@@ -0,0 +1,2 @@
+<svg style="background: green" xmlns="http://www.w3.org/2000/svg" width="100" viewBox="0 0 100 100">
+<g id='testmeta' xmlns:html='http://www.w3.org/1999/xhtml'><html:link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/" /></g></svg>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-001.html b/testing/web-platform/tests/css/css-ui/text-overflow-001.html
new file mode 100644
index 0000000000..ae9029933a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-001.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: text-overflow - clip - the text inline content overflows will be broken</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<link rel="author" title="Shiyou Tan" href="mailto:shiyoux.tan@intel.com">
+<link rel="help" title="8.2. Overflow Ellipsis: the 'text-overflow' property" href="http://www.w3.org/TR/css3-ui/#text-overflow">
+<link rel="match" href="reference/text-overflow-001-ref.html">
+<meta name="assert" content="Test checks that the inline content that overflows will be clipped. Characters may be only partially rendered when
+text-overflow set clip">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+ div {
+ font-size: 10px;
+ overflow: hidden;
+ text-overflow: clip;
+ white-space: nowrap;
+ width: 120px;
+ }
+ span {
+ font-family: Ahem;
+ font-size: 30px;
+ }
+</style>
+<body>
+ <p>Test passes if there is a <strong>black rectangle</strong> below.</p>
+ <div>
+ <span>Test checks the content broken if the content overflows the container</span>
+ </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-002.html b/testing/web-platform/tests/css/css-ui/text-overflow-002.html
new file mode 100644
index 0000000000..d8a95299d2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-002.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: text-overflow - ellipsis - the broken textual content instead of ellipsis</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<link rel="author" title="Shiyou Tan" href="mailto:shiyoux.tan@intel.com">
+<link rel="help" title="8.2. Overflow Ellipsis: the 'text-overflow' property" href="http://www.w3.org/TR/css3-ui/#text-overflow">
+<link rel="match" href="reference/text-overflow-002-ref.html">
+<meta name="assert" content="Test checks that an ellipsis (...) is shown instead of overflowing textual content">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+ div {
+ font-size: 10px;
+ overflow: hidden;
+ text-overflow: ellipsis;
+ width: 150px;
+ }
+ span {
+ font-family: Ahem;
+ font-size: 30px;
+ }
+</style>
+<body>
+ <p>PREREQUISITE: The font used must have a glyph for the U+2026 character.</p>
+ <p>Test passes if there is an <strong>ellipsis</strong> after a black rectangle below.</p>
+ <div>
+ <span>TestChecksThatTheBrokenContentRepalcedByEllipsis</span>
+ </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-003.html b/testing/web-platform/tests/css/css-ui/text-overflow-003.html
new file mode 100644
index 0000000000..ea958ef35b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-003.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: text-overflow - inherit - inherit clip value of parent's text-overflow property</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<link rel="author" title="Shiyou Tan" href="mailto:shiyoux.tan@intel.com">
+<link rel="help" title="8.2. Overflow Ellipsis: the 'text-overflow' property" href="http://www.w3.org/TR/css3-ui/#text-overflow">
+<link rel="match" href="reference/text-overflow-001-ref.html">
+<meta name="assert" content="Test checks that text-overflow inherits the parent' clip value when text-overflow set inherit">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+ #container {
+ text-overflow: clip;
+ }
+ #test {
+ font-size: 10px;
+ overflow: hidden;
+ text-overflow: inherit;
+ white-space: nowrap;
+ width: 120px;
+ }
+ span {
+ font-family: Ahem;
+ font-size: 30px;
+ }
+</style>
+<body>
+ <p>Test passes if there is a <strong>black rectangle</strong> below.</p>
+ <div id="container">
+ <div id="test">
+ <span>Test checks the content broken if the content overflows the container</span>
+ </div>
+ </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-004.html b/testing/web-platform/tests/css/css-ui/text-overflow-004.html
new file mode 100644
index 0000000000..1cc11e8257
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-004.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: text-overflow - inherit - inherit ellipsis value of parent's text-overflow property</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<link rel="author" title="Shiyou Tan" href="mailto:shiyoux.tan@intel.com">
+<link rel="help" title="8.2. Overflow Ellipsis: the 'text-overflow' property" href="http://www.w3.org/TR/css3-ui/#text-overflow">
+<link rel="match" href="reference/text-overflow-002-ref.html">
+<meta name="assert" content="Test checks that text-overflow inherits the parent' ellipsis value when text-overflow set inherit">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+ #container {
+ text-overflow: ellipsis;
+ }
+ #test {
+ font-size: 10px;
+ overflow: hidden;
+ text-overflow: inherit;
+ width: 150px;
+ }
+ span {
+ font-family: Ahem;
+ font-size: 30px;
+ }
+</style>
+<body>
+ <p>PREREQUISITE: The font used must have a glyph for the U+2026 character.</p>
+ <p>Test passes if there is an <strong>ellipsis</strong> after a black rectangle below.</p>
+ <div id="container">
+ <div id="test">
+ <span>TestChecksThatTheBrokenContentRepalcedByEllipsis</span>
+ </div>
+ </div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-005.html b/testing/web-platform/tests/css/css-ui/text-overflow-005.html
new file mode 100644
index 0000000000..b7ced3673d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-005.html
@@ -0,0 +1,20 @@
+<!doctype html>
+<html class="reftest-wait">
+<meta charset="utf-8">
+<title>CSS-UI test: text-overflow reflow</title>
+<meta name="assert" content="Text overflow should disappear when the container becomes large enough. This test is targetted at bug #14952 in Servo's incremental reflow engine.">
+<link rel="author" title="Michael Howell" href="mailto:michael@notriddle.com">
+<link rel="help" title="8.2. Overflow Ellipsis: the 'text-overflow' property" href="http://www.w3.org/TR/css3-ui/#text-overflow">
+<link rel="match" href="reference/text-overflow-005-ref.html">
+<meta name="flags" content="ahem">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>html{font-family:Ahem}</style>
+<div id=goat style="width:5em"><p style="text-overflow:ellipsis;overflow:hidden">XXXXXXXXXX</p></div>
+<script>
+var goat = document.getElementById("goat");
+requestAnimationFrame(function() {
+ goat.style.width = "20em";
+ document.documentElement.className = "";
+});
+</script>
+
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-006.html b/testing/web-platform/tests/css/css-ui/text-overflow-006.html
new file mode 100644
index 0000000000..8fd149a98d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-006.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: text-overflow applied at edge of block container</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#text-overflow">
+<link rel="match" href="reference/text-overflow-006-ref.html">
+<meta name="assert" content="Checks that the elipsis is applied at the edge of the line box, not the end of the block container, when these are different.">
+<style>
+div {
+ white-space: pre;
+ font-family: monospace;
+ text-overflow: ellipsis;
+ overflow: hidden;
+ width: 9.5ch;
+ /* 9ch ought to be enough,
+ but Safari seems to have aliasing issues that make the ellipsis character larger than 1ch by a bit.
+ Adding an extra .5 does not change the validity of the test,
+ and lets safari fit “PASS…” in the space provided.
+ This issue may be a bug, but if so, it is unrelated to what this test is testing,
+ so no need to force a fail when an easy workaround is available.
+ */
+}
+span { float: right; }
+</style>
+
+<p>Test passes if “PASS…” appears below.</p>
+<div><span> </span>PASS FAIL</div>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-007.html b/testing/web-platform/tests/css/css-ui/text-overflow-007.html
new file mode 100644
index 0000000000..795dae40fa
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-007.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: ellipsis adjacent to remaining content</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#text-overflow">
+<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+<meta name="flags" content="ahem">
+<meta name="assert" content="The ellipsis is placed immediately adjacent to the end edge of the remaining inline content, with no intervening gap.">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+.test {
+ white-space: pre;
+ font: 50px/1 Ahem;
+ text-overflow: ellipsis;
+ overflow: hidden;
+ width: 2.5em; /* We will be fitting 2em worth of characters in a 2.5em space, to see where the extra .5em goes. It should be after, not between the characters.*/
+ color: green;
+}
+.red {
+ position: absolute;
+ z-index: -1;
+ width: 100px;
+ height: 100px;
+ background: red;
+ /* This red box wich will show through the gap between the letter and the ellipsis if there's one
+ but not extend past the two characters if the ellipsis is adjacent to the character as it should be.
+ */
+}
+</style>
+
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+<div class=red></div>
+<div class=test>this line should render to a "t" followed by a "…", both of which are a 1em square in ahem, whithout any gap between them.
+this line also should render to a "t" followed by a "…", both of which are a 1em square in ahem, whithout any gap between them.</div>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-008.html b/testing/web-platform/tests/css/css-ui/text-overflow-008.html
new file mode 100644
index 0000000000..e4dbd761a0
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-008.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: ellipsis and first character</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#text-overflow">
+<link rel="match" href="reference/text-overflow-008-ref.html">
+<meta name="flags" content="ahem">
+<meta name="assert" content="The first character on a line must be clipped rather than ellipsed.">
+<!--
+ If the ellipsis character appears, it will be red (as it is styled after the block), and the test will fail.
+ If the first character is omitted rather than clipped, there will be no box at all, and the test will fail.
+-->
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+.test {
+ font: 100px/1 Ahem;
+ text-overflow: ellipsis;
+ overflow: hidden;
+ width: 0.5em;
+ color: red;
+}
+</style>
+
+<p>Test passes if there is a filled green rectangle and <strong>no red</strong>.</p>
+<div class=test><span style="color:green">x</span></div>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-009.html b/testing/web-platform/tests/css/css-ui/text-overflow-009.html
new file mode 100644
index 0000000000..384f820511
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-009.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: ellipsis and first atomic inline</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#text-overflow">
+<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+<meta name="assert" content="The first atomic inline on a line must be clipped rather than ellipsed.">
+<style>
+body > div {
+ width: 100px;
+ white-space: pre;
+ text-overflow: ellipsis;
+ overflow: hidden;
+ color: red;
+}
+span {
+ display: inline-block;
+ height: 100px;
+ width: 200px;
+ background: green;
+}
+</style>
+
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+<div><span> </span>XXXXXX</div>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-010.html b/testing/web-platform/tests/css/css-ui/text-overflow-010.html
new file mode 100644
index 0000000000..aec768cb69
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-010.html
@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: ellipsis hides atomic inlines and chars at end of line</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#text-overflow">
+<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+<meta name="flags" content="ahem">
+<meta name="assert" content="Implementations must hide atomic inlines and characters at the end of the line to make room for the ellipsis">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+.green {
+ position: absolute;
+ z-index: -1;
+ background: green;
+ width: 100px;
+ height: 100px;
+}
+.test {
+ white-space: pre;
+ font-family: Ahem;
+ text-overflow: ellipsis;
+ overflow: hidden;
+ width: 5.2em; /* making this 5.2em rather than 5em, to ensure that the atomic inline gets entirely hidden even if it is only partially obstructing */
+ color: green;
+}
+span {
+ color: red;
+}
+.ib {
+ display: inline-block;
+ background: red; /* in case the text gets disapeared but the box is still there. */
+}
+</style>
+
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+<div class=green></div>
+<div class=test> <span class=ib>X</span> </div>
+<div class=test> <span>X</span> </div>
+<div class=test> <img src="support/1x1-red.png" width=10 height=10> </div>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-011.html b/testing/web-platform/tests/css/css-ui/text-overflow-011.html
new file mode 100644
index 0000000000..0fe96e6519
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-011.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: ellipsis hides end of line</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#text-overflow">
+<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+<meta name="flags" content="ahem">
+<meta name="assert" content="Implementations must hide at the *end* (not right) of the line to make room for the ellipsis">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+.test {
+ white-space: pre;
+ font: 100px/1 Ahem;
+ color: green;
+ overflow: hidden;
+ text-overflow: ellipsis;
+ width: 500px;
+}
+.red {
+ position: absolute;
+ z-index: -1;
+ background: red;
+ width: 100px;
+ height: 100px;
+}
+</style>
+
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+<div class=red></div>
+<div class=test dir=rtl> <span style="color:orange">xxxxxx</span></div>
+<!-- Adding some visible non-green characters in the positions that are supposed to be elided,
+to make sure that not only the ellipsis is shown at the right place, but that it replaces
+the right characters -->
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-012.html b/testing/web-platform/tests/css/css-ui/text-overflow-012.html
new file mode 100644
index 0000000000..a75908026a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-012.html
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: ellipsis and extended grapheme cluster</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#text-overflow">
+<link rel="match" href="reference/text-overflow-012-ref.html">
+<meta name="flags" content="should">
+<!-- This is SHOULD because although CSS-UI defines "character" as "grapheme cluster" in a non optional manner
+ UAX29 itself defines grapheme cluster as either legacy or extended grapheme clusters,
+ and says (emphasis mine):
+ The extended grapheme clusters **should** be used
+ in implementations in preference to legacy grapheme clusters
+ -->
+<meta name="assert" content="Implementations must hide characters, i.e. entire garpheme clusters, not part of them, to make room for the ellipsis">
+<style>
+#sizer {
+ font-size: 50px;
+ white-space: pre;
+ color: white;
+ float: left;
+ position: relative;
+}
+
+#test {
+ overflow: hidden;
+ text-overflow: ellipsis;
+ position: absolute;
+ top: 0; right: 2px; bottom: 0; left: 0;
+ color: green;
+}
+span {
+ color: red;
+}
+
+</style>
+
+<p>Test passes if there are three green dots below and <strong>no red</strong>.</p>
+
+<!--Starting the line with an space because the first character on the line is clipped rather than ellided, so we need the tested grapheme cluster to be non-first-->
+<!--
+sizer shrinkwraps to the size of a space, plus the grapheme cluster, plus the ellipsis.
+test is 2px shorter than that, so it can only fit part of the grapheme cluster.
+The whole grapheme cluster should be removed, not just its second character.
+-->
+
+<div id=sizer> &#x0E01;&#x0E33;…<div id=test> <span>&#x0E01;&#x0E33;filler text to make things overflow</span></div><div>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-013.html b/testing/web-platform/tests/css/css-ui/text-overflow-013.html
new file mode 100644
index 0000000000..20c9a5c5ae
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-013.html
@@ -0,0 +1,48 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: ellipsis and baseline alignement</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#ellipsing-details">
+<link rel="match" href="reference/text-overflow-013-ref.html">
+<meta name="flags" content="ahem">
+<meta name="assert" content="The ellipsis is be baseline aligned with the block, even if the thing it replaces isn't.">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+.test {
+ overflow: hidden;
+ text-overflow: ellipsis;
+ white-space: pre;
+ font: 100px/1 Ahem;
+ color: green;
+
+ /* 2em width and starting with a space
+ because the handling of the ellipsis of the first character on the line is special,
+ and therefore we need to have the thing we want to test in non first position.
+ */
+ width: 2em;
+}
+.red {
+ position: absolute;
+ z-index: -1;
+ width: 100px;
+ height: 100px;
+ background: red;
+ margin-left: 100px; /* moving right to skip the first 100x100 space that starts each line */
+}
+span {
+ vertical-align: sub;
+ color: red;
+}
+</style>
+
+<p>Test passes if there are 3 filled green squares and <strong>no red</strong>.</p>
+<div class="red"></div>
+<div class=test> <span>xxxx<br><div class="red"></div> xxxx<br><div class="red"></div> xxxx</span> </div>
+<!--
+There are 3 lines in the test div to make sure that the middle one only contains text from the span, not directly from the block,
+guaranteeing that the ellipsis is taking its baseline from the block even when the block has no direct content on the line.
+
+The "red" divs for line 2 and 3 are descendants of the span so that they are placed based on their static position at the begining of each line.
+The alternative, which would be to place them (vertically) with explicit offsets would require knowing
+the precise height of the preceeding line boxes, which isn't reliable across UAs.
+-->
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-014.html b/testing/web-platform/tests/css/css-ui/text-overflow-014.html
new file mode 100644
index 0000000000..0fe5063a34
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-014.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: styling the ellipsis</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#ellipsing-details">
+<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+<meta name="flags" content="ahem">
+<meta name="assert" content="The ellipsis' font family, font size, and color are styled according to the block.">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+.test {
+ overflow: hidden;
+ text-overflow: ellipsis;
+ white-space:pre;
+ font: 100px/1 Ahem;
+ color: green;
+
+ /* 2em width and starting with a space
+ because the handling of the ellipsis of the first character on the line is special,
+ and therefore we need to have the thing we want to test in non first position.
+ Shifting 1em left to align with the usual green square.
+ */
+ width: 2em;
+ margin-left: -1em;
+}
+.red {
+ position: absolute;
+ z-index: -1;
+ width: 100px;
+ height: 100px;
+ background: red;
+}
+span {
+ font: 50%/1 serif;
+ color: red;
+}
+</style>
+
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+<div class=red></div>
+<div class=test> <span>xxxxxxxxxxxxxxxxxxxx</span></div>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-015.html b/testing/web-platform/tests/css/css-ui/text-overflow-015.html
new file mode 100644
index 0000000000..3899fc6a1e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-015.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: ellipsis after graphical transformations</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#ellipsing-details">
+<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+<meta name="flags" content="ahem">
+<meta name="assert" content="Ellipsing occurs after relative positioning">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+div {
+ overflow: hidden;
+ text-overflow: ellipsis;
+ width: 100px;
+ height: 100px;
+ white-space: pre;
+ font: 20px/1 Ahem;
+ color: green;
+ background: url("support/1x1-red.png") top right / 1em 1em no-repeat, green;
+}
+.rel {
+ position: relative;
+ left: 1em;
+}
+</style>
+
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+<div><span class=rel> </span></div>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-016.html b/testing/web-platform/tests/css/css-ui/text-overflow-016.html
new file mode 100644
index 0000000000..d66b64d58a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-016.html
@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: clipping the ellipsis</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#ellipsing-details">
+<link rel="match" href="reference/text-overflow-016-ref.html">
+<meta name="flags" content="ahem">
+<meta name="assert" content="If there is insufficient space for the ellipsis, then clip the rendering of the ellipsis itself">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+.test, .test2 {
+ overflow: hidden;
+ text-overflow: ellipsis;
+ width: 100px;
+ white-space: pre;
+ font: 50px/1 Ahem;
+ height: 20px;
+ position: relative;
+}
+span {
+ display: inline-block;
+ width: 60px;
+ height: 1em;
+ vertical-align: bottom;
+}
+
+/* if the ellipsis is shorter than the expected 40px (or misplaced) the red background will show */
+.test {
+ color: green;
+ background: url("support/1x1-red.png") right / 40px auto no-repeat;
+}
+
+/* if the ellipsis (which is red) is longer that the expected 40px (or misplaced), it won't be fully covered by the green abspos */
+.test2 { color: red; }
+.test2::after {
+ content: "";
+ position: absolute;
+ top: 0; right: 0; bottom: 0;
+ width: 40px;
+ background: green;
+}
+</style>
+
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+<div class=test><span></span>filler text to make things overflow</div>
+<div class=test2><span></span>filler text to make things overflow</div>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-017.html b/testing/web-platform/tests/css/css-ui/text-overflow-017.html
new file mode 100644
index 0000000000..561d4d0b6f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-017.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: interacting with the ellipsis</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#text-overflow">
+<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+<meta name="flags" content="ahem interact dom">
+<meta name="assert" content="Ellipsing must not prevent dispatching of pointer events.">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+#test {
+ overflow: hidden;
+ text-overflow: ellipsis;
+ margin-left: -100px;
+ width: 2.5em;
+ height: 1em;
+ white-space: pre;
+ font: 100px/1 Ahem;
+ color: blue;
+}
+#discard {
+ float: left;
+}
+</style>
+
+<div id=discard>First, click the blue box. </div>
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+<div id="test" onclick="green()"> </div>
+<script>
+function green() {
+ document.getElementById("test").style.color="green";
+ document.getElementById("discard").remove();
+ document.children[0].className="";
+}
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-018.html b/testing/web-platform/tests/css/css-ui/text-overflow-018.html
new file mode 100644
index 0000000000..848ebe690e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-018.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: selecting the ellipsis</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#ellipsis-interaction">
+<meta name="flags" content="interact should">
+<meta name="assert" content="Selecting the ellipsis should select the ellipsed text">
+<style>
+div{
+ font-size: 25px;
+ font-family: monospace;
+ width: 2.1ch;
+ white-space: pre;
+ overflow: hidden;
+ text-overflow: ellipsis;
+ border: solid blue;
+ padding-right: 0.9ch;
+}
+textarea {
+ width: 100%;
+ box-sizing: border-box;
+ border: solid orange;
+}
+</style>
+
+<p>Select the elipsis character (“…”) in the blue box below, copy it to the clipboard, and paste the result into the orange box.
+<p>This test passes if the pasted text is “This test passes”. If only part of that text is pasted, the test fails.
+<div>&nbsp;This test passes</div>
+<textarea></textarea>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-019.html b/testing/web-platform/tests/css/css-ui/text-overflow-019.html
new file mode 100644
index 0000000000..2571d4cf93
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-019.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: ellipsed text selection</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#ellipsis-interaction">
+<meta name="flags" content="interact dom should">
+<meta name="assert" content="If all of the ellipsed text is selected, UAs should show selection of the ellipsis.">
+<style>
+div{
+ font-size: 25px;
+ font-family: monospace;
+ width: 2.1ch;
+ white-space: pre;
+ overflow: hidden;
+ text-overflow: ellipsis;
+ border: solid blue;
+}
+</style>
+
+<p>This test passes if both the “P” and the ellipsis (“…”) in the blue box bellow appear selected.
+<div id=test>Pass</div>
+
+<script>
+var sel = window.getSelection();
+sel.selectAllChildren(document.getElementById("test"));
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-020.html b/testing/web-platform/tests/css/css-ui/text-overflow-020.html
new file mode 100644
index 0000000000..73f2b88e89
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-020.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: no ellipsing when nesting</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#text-overflow">
+<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+<meta name="flags" content="ahem">
+<meta name="assert" content="Nested paragraph won’t ellipse.">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+div {
+ overflow: hidden;
+ text-overflow: ellipsis;
+ width: 100px;
+ height: 100px;
+ background: green;
+}
+div > p {
+ white-space: pre;
+ font: 40px/1 Ahem;
+ color: green;
+ background: red;
+ margin: 0;
+}
+</style>
+
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+<div><p>xxxxxxxxxx</p></div>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-021.html b/testing/web-platform/tests/css/css-ui/text-overflow-021.html
new file mode 100644
index 0000000000..8057ffc787
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-021.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: ellipsis, revealing more text</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#ellipsis-scrolling">
+<link rel="match" href="reference/text-overflow-021-ref.html">
+<meta name="flags" content="dom should">
+<meta name="assert" content="When an element with ellipsis is scrolled, more content should be revealed, until the element is scrolled far enough to display the edge of the content at which point that content should be displayed rather than an ellipsis.">
+<style>
+div {
+ font-family: monospace;
+ width: 16ch;
+ white-space: pre;
+ overflow: scroll;
+ text-overflow: ellipsis;
+ border: solid blue;
+}
+</style>
+
+<p>This test passes if the text is in the blue box below is “PASS”.
+<div id=test> PASS</div>
+<script>
+var test = document.getElementById("test");
+test.scrollBy(500,0);
+document.documentElement.className = "";
+</script>
+
+
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-022.html b/testing/web-platform/tests/css/css-ui/text-overflow-022.html
new file mode 100644
index 0000000000..e1ada9d479
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-022.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: ellipsis and legacy grapheme cluster</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#text-overflow">
+<link rel="match" href="reference/text-overflow-022-ref.html">
+<meta name="assert" content="Implementations must hide characters, i.e. entire garpheme clusters, not part of them, to make room for the ellipsis">
+<style>
+#sizer {
+ font-size: 50px;
+ white-space: pre;
+ color: white;
+ float: left;
+ position: relative;
+}
+
+#test {
+ overflow: hidden;
+ text-overflow: ellipsis;
+ position: absolute;
+ top: 0; right: 2px; bottom: 0; left: 0;
+ color: green;
+}
+span {
+ color: red;
+}
+
+</style>
+
+<p>Test passes if there are three green dots below and <strong>no red</strong>.</p>
+
+<!--Starting the line with an space because the first character on the line is clipped rather than ellided, so we need the tested grapheme cluster to be non-first-->
+<!--
+sizer shrinkwraps to the size of a space, plus the grapheme cluster, plus the ellipsis.
+test is 2px shorter than that, so it can only fit part of the grapheme cluster.
+The whole grapheme cluster should be removed, not just its second character.
+-->
+
+<div id=sizer> l&#x20DE;…<div id=test> <span>l&#x20DE;filler text to make things overflow</span></div><div>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-023.html b/testing/web-platform/tests/css/css-ui/text-overflow-023.html
new file mode 100644
index 0000000000..b9c21ed8f2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-023.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: interacting with the ellipsis</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#text-overflow">
+<meta name="flags" content="ahem dom should">
+<meta name="assert" content="Pointer events on the ellipsis should be dispatched to the elided inline element if there's one, rather than directly to the block.">
+<!-- This is tested indirectly, using elementFromPoint instead of actually triggering a pointer event, because:
+ * Actual pointer events can only be dispatched in an manual test, while elementFromPoint allows for an automated test
+ * These two methods are expected to give the same result
+
+ This indirection and the slight risk of false positive or false negative it introduces
+ is preferable to a manual test which would hardly anyone would ever run.
+-->
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+#parent {
+ position: absolute;
+ top: 0; left: 0;
+ font: 50px/1 Ahem ;
+ overflow: hidden;
+ width: 3em;
+ text-overflow: ellipsis;
+}
+</style>
+<div id=parent>&nbsp;&nbsp;<span id=target>&nbsp;&nbsp;</span></div>
+<script>
+setup({explicit_done: true});
+document.fonts.ready.then(()=> {
+ test(
+ function() {
+ var e = document.elementFromPoint(125,25);
+ assert_equals(e.id,"target", "the element targeted by a hit on the ellipsis is the elided inline.");
+ }, "Checks hit testing on the ellipsis");
+ done();
+});
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-024-ref.html b/testing/web-platform/tests/css/css-ui/text-overflow-024-ref.html
new file mode 100644
index 0000000000..2e9b8301f4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-024-ref.html
@@ -0,0 +1,26 @@
+<!DOCTYPE HTML>
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+ <meta charset="utf-8">
+ <title>Reference: text-overflow on tr::before with overflow:hidden</title>
+ <style type="text/css">
+
+ td {
+ overflow: hidden;
+ white-space: nowrap;
+ text-overflow: ellipsis;
+ }
+
+ </style>
+</head>
+<body>
+PASS if there is an ellipsis at the end of the text below.
+ <table style="table-layout: fixed; width: 130px" cellpadding="0" cellspacing="0">
+ <tr><td>Some long text here that overflows and whatnot.</td></tr>
+ </table>
+
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-024.html b/testing/web-platform/tests/css/css-ui/text-overflow-024.html
new file mode 100644
index 0000000000..0ca5b428cb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-024.html
@@ -0,0 +1,31 @@
+<!DOCTYPE HTML>
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+ <meta charset="utf-8">
+ <title>Test: text-overflow on tr::before with overflow:hidden</title>
+ <link rel="author" title="Boris Zbarsky" href="mailto:bzbarsky@mit.edu">
+ <link rel="help" href="https://www.w3.org/TR/css3-ui/#text-overflow" title="5.2. the 'text-overflow' property">
+ <link rel="match" href="text-overflow-024-ref.html">
+ <style type="text/css">
+
+ tr::before {
+ content: "Some long text here that overflows and whatnot.";
+ display: table-cell;
+ overflow: hidden;
+ white-space: nowrap;
+ text-overflow: ellipsis;
+ }
+
+ </style>
+</head>
+<body>
+PASS if there is an ellipsis at the end of the text below.
+ <table style="table-layout: fixed; width: 130px" cellpadding="0" cellspacing="0">
+ <tr></tr>
+ </table>
+
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-025-ref.html b/testing/web-platform/tests/css/css-ui/text-overflow-025-ref.html
new file mode 100644
index 0000000000..c8acd47960
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-025-ref.html
@@ -0,0 +1,24 @@
+<!DOCTYPE HTML>
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+ <meta charset="utf-8">
+ <title>Reference: text-overflow on tr::before without overflow:hidden</title>
+ <style type="text/css">
+
+ td {
+ white-space: nowrap;
+ }
+
+ </style>
+</head>
+<body>
+PASS if there is no ellipsis below.
+ <table style="table-layout: fixed; width: 130px" cellpadding="0" cellspacing="0">
+ <tr><td>Some long text here that overflows and whatnot.</td></tr>
+ </table>
+
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-025.html b/testing/web-platform/tests/css/css-ui/text-overflow-025.html
new file mode 100644
index 0000000000..3e0fce0afb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-025.html
@@ -0,0 +1,33 @@
+<!DOCTYPE HTML>
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+ <meta charset="utf-8">
+ <title>Test: text-overflow on tr::before without overflow:hidden</title>
+ <link rel="author" title="Boris Zbarsky" href="mailto:bzbarsky@mit.edu">
+ <link rel="help" href="https://www.w3.org/TR/css3-ui/#text-overflow" title="5.2. the 'text-overflow' property">
+ <link rel="match" href="text-overflow-025-ref.html">
+ <style type="text/css">
+
+ tr::before {
+ content: "Some long text here that overflows and whatnot.";
+ display: table-cell;
+ white-space: nowrap;
+ text-overflow: ellipsis;
+ }
+ tr {
+ overflow: hidden;
+ }
+
+ </style>
+</head>
+<body>
+PASS if there is no ellipsis below.
+ <table style="table-layout: fixed; width: 130px" cellpadding="0" cellspacing="0">
+ <tr></tr>
+ </table>
+
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-026-ref.html b/testing/web-platform/tests/css/css-ui/text-overflow-026-ref.html
new file mode 100644
index 0000000000..f2db8c747f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-026-ref.html
@@ -0,0 +1,62 @@
+<!DOCTYPE HTML>
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+ <meta charset="utf-8">
+ <title>Reference: text-overflow with leading white-space</title>
+ <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1403986">
+ <style type="text/css">
+html,body {
+ color:black; background-color:white; font:16px/1 monospace;
+}
+
+.ellipsize {
+ white-space: nowrap;
+ overflow: hidden;
+ text-overflow: ellipsis;
+ width: 100px;
+ border: 1px solid;
+}
+
+.inline-block {
+ display: inline-block;
+ background: red;
+}
+ </style>
+</head>
+<body>
+
+<pre>
+The test PASS if all of the following are true:
+1. there are no red areas
+2. the first two blocks display "PASS" but no ellipsis
+3. the last three blocks display an ellipsis
+</pre>
+
+<div class="ellipsize" style="text-overflow: clip">
+ <span style="margin-left:5px"></span><span class="inline-block" style="background:lime">
+ PASS PASS PASS PASS PASS</span>
+</div>
+
+<div class="ellipsize" style="text-overflow: clip">
+ <span style="margin-left:5px"></span>
+ <span class="inline-block" style="background:lime">
+ PASS PASS PASS PASS PASS</span>
+</div>
+
+<div class="ellipsize">
+ <span style="margin-left:10px"></span>&nbsp;&#x2026;
+</div>
+
+<div class="ellipsize">
+ &nbsp;&#x2026;
+</div>
+
+<div class="ellipsize">
+ a&#x2026;
+</div>
+
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-026.html b/testing/web-platform/tests/css/css-ui/text-overflow-026.html
new file mode 100644
index 0000000000..2d1aa57cc8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-026.html
@@ -0,0 +1,67 @@
+<!DOCTYPE HTML>
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+ <meta charset="utf-8">
+ <title>Test: text-overflow with leading white-space</title>
+ <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1403986">
+ <link rel="help" href="https://www.w3.org/TR/css3-ui/#text-overflow" title="5.2. the 'text-overflow' property">
+ <link rel="match" href="text-overflow-026-ref.html">
+ <style type="text/css">
+html,body {
+ color:black; background-color:white; font:16px/1 monospace;
+}
+
+.ellipsize {
+ white-space: nowrap;
+ overflow: hidden;
+ text-overflow: ellipsis;
+ width: 100px;
+ border: 1px solid;
+}
+
+.inline-block {
+ display: inline-block;
+ background: red;
+}
+ </style>
+</head>
+<body>
+
+<pre>
+The test PASS if all of the following are true:
+1. there are no red areas
+2. the first two blocks display "PASS" but no ellipsis
+3. the last three blocks display an ellipsis
+</pre>
+
+<div class="ellipsize">
+ <span style="margin-left:5px"></span><span class="inline-block" style="background:lime">
+ PASS PASS PASS PASS PASS</span>
+</div>
+
+<div class="ellipsize">
+ <span style="margin-left:5px"></span>
+ <span class="inline-block" style="background:lime">
+ PASS PASS PASS PASS PASS</span>
+</div>
+
+<div class="ellipsize">
+ <span style="margin-left:10px"></span>&nbsp;<span class="inline-block">
+ FAIL FAIL FAIL FAIL FAIL FAIL FAIL FAIL </span>
+</div>
+
+<div class="ellipsize">
+ &nbsp;<span class="inline-block">
+ FAIL FAIL FAIL FAIL FAIL FAIL FAIL FAIL </span>
+</div>
+
+<div class="ellipsize">
+ a<span class="inline-block">
+ FAIL FAIL FAIL FAIL FAIL FAIL FAIL FAIL </span>
+</div>
+
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-027.html b/testing/web-platform/tests/css/css-ui/text-overflow-027.html
new file mode 100644
index 0000000000..6e7686c6c9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-027.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: text-overflow applies visually to bidi</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css-ui-3/#text-overflow">
+<link rel="help" href="http://www.w3.org/TR/css-ui-4/#text-overflow">
+<link rel="match" href="reference/text-overflow-027-ref.html">
+<meta name="assert" content="text-overflow is a visual operation that occurs after layout, and therfore ellides text from the visual end of the line, even in bidi situations">
+<style>
+div {
+ font-family: monospace;
+ width: 10ch;
+ overflow: hidden;
+ text-overflow: ellipsis;
+ white-space: pre;
+}
+</style>
+
+<p>The test passes if the following text is visible below: 123456 FE…</p>
+<div>123456 <bdo dir=rtl>ABCDEF</bdo></div>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-028.html b/testing/web-platform/tests/css/css-ui/text-overflow-028.html
new file mode 100644
index 0000000000..68b47cc188
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-028.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: text-overflow applies visually to bidi</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css-ui-3/#text-overflow">
+<link rel="help" href="http://www.w3.org/TR/css-ui-4/#text-overflow">
+<link rel="match" href="reference/text-overflow-028-ref.html">
+<meta name="assert" content="text-overflow is a visual operation that occurs after layout, and therfore ellides text from the visual end of the line, even in bidi situations">
+<style>
+div {
+ font-family: monospace;
+ width: 10ch;
+ overflow: hidden;
+ text-overflow: ellipsis;
+ white-space: pre;
+}
+</style>
+
+<p>The test passes if the following text is visible below: …56 FEDCBA</p>
+<div dir=rtl><bdo dir=rtl>ABCDEF</bdo> 123456</div>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-029.html b/testing/web-platform/tests/css/css-ui/text-overflow-029.html
new file mode 100644
index 0000000000..07ba447122
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-029.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html lang="en">
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: text-overflow and bidi interaction</title>
+<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/">
+<link rel="help" href="http://www.w3.org/TR/css-ui-3/#text-overflow">
+<link rel="help" href="http://www.w3.org/TR/css-ui-4/#text-overflow">
+<link rel="match" href="reference/text-overflow-029-ref.html">
+<meta name="assert" content="When there's content of mixed directionality, text-overflow ellides the characters at the physical end of the line.">
+<style>
+div {
+ font: 20px monospace;
+ width: 12.3ch; /* slightly more than 12ch because in some browsers (safari) the ellipsis is slightly large than other characters, even in monospace fonts. */
+ text-overflow: ellipsis;
+ white-space: nowrap;
+ overflow: hidden;
+}
+</style>
+
+<div>Test &#x202E;deliafdessap&#x202C;</div>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-030.html b/testing/web-platform/tests/css/css-ui/text-overflow-030.html
new file mode 100644
index 0000000000..0ccd59c12a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-030.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: ellipsis should render under other positioned content</title>
+<link rel="author" title="Cameron McCormack" href="mailto:cam@mcc.id.au">
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#text-overflow">
+<link rel="match" href="reference/text-overflow-030-ref.html">
+<style>
+.positioned {
+ background-color: green;
+ position: absolute;
+ width: 100px;
+ height: 100px;
+}
+.ellipsis {
+ color: red;
+ overflow-x: hidden;
+ text-overflow: ellipsis;
+ white-space: pre;
+ width: 100px;
+ font: 50px sans-serif;
+}
+</style>
+<p>Test passes if there is a green rectangle and no red.</p>
+<div class="positioned"></div>
+<div class="ellipsis"> </div>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-change-color.html b/testing/web-platform/tests/css/css-ui/text-overflow-change-color.html
new file mode 100644
index 0000000000..8982da5eb9
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-change-color.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<title>Test ellipsis style</title>
+<link rel="match" href="reference/text-overflow-change-color-ref.html">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#ellipsing-details">
+<link rel="author" href="kojii@chromium.org">
+<meta name="assert" content="Changing the color of the container should also change the color of ellipsis">
+<style>
+div {
+ color: red;
+ text-overflow: ellipsis;
+ overflow: hidden;
+ white-space: pre;
+ font-size: 50px;
+ width: 5ch;
+}
+</style>
+<body>
+<div id=container>123456789</div>
+<script>
+document.body.offsetTop;
+container.style.color = 'lime';
+</script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-ellipsis-abspos-in-inline-block-crash-001.html b/testing/web-platform/tests/css/css-ui/text-overflow-ellipsis-abspos-in-inline-block-crash-001.html
new file mode 100644
index 0000000000..23291d4339
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-ellipsis-abspos-in-inline-block-crash-001.html
@@ -0,0 +1,44 @@
+<!DOCTYPE html>
+<title>Ellipsizing inline blocks that have absolute positioned objects should not crash</title>
+<link rel="author" href="kojii@chromium.org">
+<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=945690">
+<meta name="assert" content="Ellipsizing inline blocks that have absolute positioned objects should not crash">
+<style>
+div {
+ text-overflow: ellipsis;
+ overflow: hidden;
+ white-space: nowrap;
+ width: 5ch;
+}
+.inline-block {
+ display: inline-block;
+}
+.abs {
+ position: absolute;
+}
+</style>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div>
+ 12345678
+ <span class="inline-block">
+ <span class="abs">abs</span>
+ </span>
+</div>
+<div>
+ 12345678
+ <span class="inline-block">
+ 999
+ <span class="abs">abs</span>
+ </span>
+</div>
+<div>
+ 12
+ <span class="inline-block">
+ 3456789
+ <span class="abs">abs</span>
+ </span>
+</div>
+<script>
+test(() => {}, 'No crash or DCHECK failure');
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-ellipsis-hyphen.html b/testing/web-platform/tests/css/css-ui/text-overflow-ellipsis-hyphen.html
new file mode 100644
index 0000000000..eb6f5d443e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-ellipsis-hyphen.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<title>Ellipsizing hyphens should not crash</title>
+<link rel="author" href="kojii@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#ellipsing-details">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+div {
+ width: 0.1ch;
+ text-overflow: ellipsis;
+ overflow: hidden;
+}
+</style>
+<body>
+ <div dir="rtl">12345&shy;999</div>
+<script>
+test(() => {}, 'No crash or DCHECK failure');
+</script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-ellipsis-indent-001.html b/testing/web-platform/tests/css/css-ui/text-overflow-ellipsis-indent-001.html
new file mode 100644
index 0000000000..6f5c81bc1e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-ellipsis-indent-001.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<title>Test ellipsis with `text-indent`</title>
+<link rel="match" href="reference/text-overflow-ellipsis-indent-001-ref.html">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#ellipsing-details">
+<link rel="author" href="mailto:kojii@chromium.org">
+<style>
+div {
+ text-overflow: ellipsis;
+ overflow: hidden;
+ font-size: 10px;
+ width: 6ch;
+ padding-left: 3ch;
+}
+</style>
+<body>
+ <div>123456</div>
+ <div>1234567</div>
+ <div style="text-indent: 3ch;">123</div>
+ <div style="text-indent: 3ch;">1234</div>
+ <div style="text-indent: -3ch;">123456789</div>
+ <div style="text-indent: -3ch;">1234567890</div>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-ellipsis-self-painting.html b/testing/web-platform/tests/css/css-ui/text-overflow-ellipsis-self-painting.html
new file mode 100644
index 0000000000..2810f8dae1
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-ellipsis-self-painting.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<title>CSS Basic User Interface Test: ellipsis when there are self-painting objects</title>
+<link rel="help" href="http://www.w3.org/TR/css3-ui/#text-overflow">
+<link rel="help" href="https://crbug.com/1005645">
+<link rel="author" href="mailto:kojii@chromium.org">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+.test {
+ width: 5ch;
+ white-space: nowrap;
+}
+.ellipsis {
+ text-overflow: ellipsis;
+ overflow: hidden;
+}
+span {
+ display: inline-block;
+ width: 16px;
+ height: 16px;
+ background: red;
+ opacity: 0.3;
+}
+</style>
+<body>
+ <div id="test" class="test ellipsis">1234567890 <span></span></div>
+ <div id="ref" class="test">1234567890 <span></span></div>
+<script>
+test(() => {
+ const ref_element = document.getElementById('ref');
+ const test_element = document.getElementById('test');
+ assert_equals(test_element.scrollWidth, ref_element.scrollWidth);
+});
+</script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-ellipsis-width-001.html b/testing/web-platform/tests/css/css-ui/text-overflow-ellipsis-width-001.html
new file mode 100644
index 0000000000..2042111588
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-ellipsis-width-001.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<title>Ellipsizing should not affect `offsetWidth` of inline boxes.</title>
+<link rel="author" href="kojii@chromium.org">
+<link rel="help" href="https://crbug.com/978392">
+<link rel="help" href="https://drafts.csswg.org/css-ui-3/#ellipsing-details">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+#ellipsis {
+ width: 50px;
+ text-overflow: ellipsis;
+ overflow: hidden;
+ white-space: nowrap;
+}
+</style>
+<body>
+ <div id="normal"><span>This is a test text.</span></div>
+ <div id="ellipsis"><span>This is a test text.</span></div>
+<script>
+test(() => {
+ let normal_child = normal.firstElementChild;
+ let ellipsis_child = ellipsis.firstElementChild;
+ assert_equals(normal_child.offsetWidth, ellipsis_child.offsetWidth);
+});
+</script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-ref.html b/testing/web-platform/tests/css/css-ui/text-overflow-ref.html
new file mode 100644
index 0000000000..b471cf1c31
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-ref.html
@@ -0,0 +1,17 @@
+<!doctype html>
+<head>
+ <title>CSS Reftest Ellipsis Reference</title>
+ <link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+ <style>
+ div { font-size:10px; }
+ span { font-family:Ahem; font-size:30px; }
+ </style>
+</head>
+<body>
+ <p>PREREQUISITE: The font used must have a glyph for the U+2026 character.</p>
+ <p>Test passes if there is <strong>ellipsis</strong> after a black square.</p>
+ <div>
+ <span>A</span>&#x2026;
+ </div>
+</body>
+</html> \ No newline at end of file
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-ruby-ref.html b/testing/web-platform/tests/css/css-ui/text-overflow-ruby-ref.html
new file mode 100644
index 0000000000..ae5267aa9e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-ruby-ref.html
@@ -0,0 +1,83 @@
+<!DOCTYPE HTML>
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+ <meta charset="utf-8">
+ <title>Reference: text-overflow:ellipsis and ruby</title>
+ <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+ <style>
+html,body {
+ color:black; background-color:white; font:14px/1 monospace; padding:0; margin:0;
+}
+
+.clip {
+ overflow: hidden;
+ width: 40px;
+ text-overflow: ellipsis;
+}
+
+input { width: 40px; -webkit-appearance: none; border: 1px solid black; }
+span { white-space: pre; }
+.thg { display: inline-table; }
+.tc { display: inline-table; }
+.t { display: inline-table; }
+
+ </style>
+</head>
+<body>
+
+<div style="float:left; width:300px">
+<div class="clip">
+<span><span><span>aa<input class="thg">bb</span></span></span>
+<br>
+<span><span><span>aa<div class="thg">bbbbbb</div>cc</span></span></span>
+<br>
+<span><span><span>aa<span>bbbbbb</span>cc</span></span></span>
+<br>
+<span><span><span>aa<input class="tc">bb</span></span></span>
+<br>
+<span><span><span>aa<div class="tc">bbbbbb</div>cc</span></span></span>
+<br>
+<span><span><span>aa<input class="t">bb</span></span></span>
+<br>
+<span><span><span>aa<div class="t">bbbbbb</div>cc</span></span></span>
+
+<br>
+<span><span><span><input class="thg">bb</span></span></span>
+<br>
+<span><span><span><div class="thg">bbbbbb</div>cc</span></span></span>
+<br>
+<span><span><span><span>bbbbbb</span>cc</span></span></span>
+<br>
+<span><span><span><input class="tc">bb</span></span></span>
+<br>
+<span><span><span><div class="tc">bbbbbb</div>cc</span></span></span>
+<br>
+<span><span><span><input class="t">bb</span></span></span>
+<br>
+<span><span><span><div class="t">bbbbbb</div>cc</span></span></span>
+</div>
+</div>
+
+<div style="float:left; width:300px">
+<div class="clip">
+<span><span><input class="thg">bb</span></span>
+<br>
+<span><span><div class="thg">bbbbbb</div>cc</span></span>
+<br>
+<span><span>bbbbbbcc</span></span>
+<br>
+<span><span><input class="tc">bb</span></span>
+<br>
+<span><span><div class="tc">bbbbbb</div>cc</span></span>
+<br>
+<span><span><input class="t">bb</span></span>
+<br>
+<span><span><div class="t">bbbbbb</div>cc</span></span>
+</div>
+</div>
+
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow-ruby.html b/testing/web-platform/tests/css/css-ui/text-overflow-ruby.html
new file mode 100644
index 0000000000..c8abebb720
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow-ruby.html
@@ -0,0 +1,85 @@
+<!DOCTYPE HTML>
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+ <meta charset="utf-8">
+ <title>CSS Basic User Interface Test: text-overflow:ellipsis and ruby</title>
+ <link rel="help" href="http://www.w3.org/TR/css3-ui/#text-overflow">
+ <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+ <link rel="match" href="text-overflow-ruby-ref.html">
+ <style>
+html,body {
+ color:black; background-color:white; font:14px/1 monospace; padding:0; margin:0;
+}
+
+.clip {
+ overflow: hidden;
+ width: 40px;
+ text-overflow: ellipsis;
+}
+
+input { width: 40px; -webkit-appearance: none; border: 1px solid black; }
+
+.thg { display: table-header-group; }
+.tc { display: table-cell; }
+.t { display: table; }
+
+ </style>
+</head>
+<body>
+
+<div style="float:left; width:300px">
+<div class="clip">
+<ruby><rb><span>aa<input class="thg">bb</span></rb></ruby>
+<br>
+<ruby><rb><span>aa<div class="thg">bbbbbb</div>cc</span></rb></ruby>
+<br>
+<ruby><rb><span>aa<span>bbbbbb</span>cc</span></rb></ruby>
+<br>
+<ruby><rb><span>aa<input class="tc">bb</span></rb></ruby>
+<br>
+<ruby><rb><span>aa<div class="tc">bbbbbb</div>cc</span></rb></ruby>
+<br>
+<ruby><rb><span>aa<input class="t">bb</span></rb></ruby>
+<br>
+<ruby><rb><span>aa<div class="t">bbbbbb</div>cc</span></rb></ruby>
+
+<br>
+<ruby><rb><span><input class="thg">bb</span></rb></ruby>
+<br>
+<ruby><rb><span><div class="thg">bbbbbb</div>cc</span></rb></ruby>
+<br>
+<ruby><rb><span><span>bbbbbb</span>cc</span></rb></ruby>
+<br>
+<ruby><rb><span><input class="tc">bb</span></rb></ruby>
+<br>
+<ruby><rb><span><div class="tc">bbbbbb</div>cc</span></rb></ruby>
+<br>
+<ruby><rb><span><input class="t">bb</span></rb></ruby>
+<br>
+<ruby><rb><span><div class="t">bbbbbb</div>cc</span></rb></ruby>
+</div>
+</div>
+
+<div style="float:left; width:300px">
+<div class="clip">
+<ruby><rb><input class="thg">bb</rb></ruby>
+<br>
+<ruby><rb><div class="thg">bbbbbb</div>cc</rb></ruby>
+<br>
+<ruby><rb>bbbbbbcc</rb></ruby>
+<br>
+<ruby><rb><input class="tc">bb</rb></ruby>
+<br>
+<ruby><rb><div class="tc">bbbbbb</div>cc</rb></ruby>
+<br>
+<ruby><rb><input class="t">bb</rb></ruby>
+<br>
+<ruby><rb><div class="t">bbbbbb</div>cc</rb></ruby>
+</div>
+</div>
+
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/text-overflow.html b/testing/web-platform/tests/css/css-ui/text-overflow.html
new file mode 100644
index 0000000000..88bc91157b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/text-overflow.html
@@ -0,0 +1,29 @@
+<!doctype html>
+<html>
+ <title>CSS Basic User Interface Test: text-overflow - ellipsis</title>
+ <link rel="author" title="YreenChan" href="mailto:yreenchan@gmail.com">
+ <link rel="reviewer" title="Simon Pieters" href="mailto:simonp@opera.com">
+ <link rel="reviewer" title="Leif Arne Storset" href="mailto:lstorset@opera.com">
+ <link rel="help" href="http://www.w3.org/TR/css3-ui/#text-overflow" title="8.2. the 'text-overflow' property">
+ <link rel="match" href="text-overflow-ref.html">
+ <meta name="flags" content="ahem">
+ <meta name="assert" content="'text-overflow:ellipsis' renders U+2026 when text is overflowing.">
+ <link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+ <style>
+ div {
+ font-size:10px;
+ overflow: hidden;
+ text-overflow: ellipsis;
+ white-space: nowrap;
+ width: 50px;
+ }
+ span { font-family: Ahem; font-size:30px; }
+ </style>
+<body>
+ <p>PREREQUISITE: The font used must have a glyph for the U+2026 character.</p>
+ <p>Test passes if there is <strong>ellipsis</strong> after a black square.</p>
+ <div>
+ <span>AAAA</span>
+ </div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/tools/appearance-build-webkit-reftests.py b/testing/web-platform/tests/css/css-ui/tools/appearance-build-webkit-reftests.py
new file mode 100755
index 0000000000..010635dddc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/tools/appearance-build-webkit-reftests.py
@@ -0,0 +1,28 @@
+#!/usr/bin/env python3
+import os
+import re
+
+re_testname = re.compile(r"^appearance-.+\d\d\d\.html$")
+re_link_match = re.compile(r'<link rel="(mis)?match"')
+
+files = {}
+
+parentdir = os.path.abspath(os.path.join(__file__, os.pardir, os.pardir))
+assert parentdir.endswith('/css-ui')
+
+for filename in os.listdir(parentdir):
+ path = os.path.join(parentdir, filename)
+ if os.path.isfile(path) and re_testname.search(filename) and not filename in files:
+ with open(path, "r") as file:
+ files[filename] = file.read()
+
+warning = """<!-- DO NOT EDIT THIS FILE.
+Edit the appearance-* file instead and then run:
+ ./tools/appearance-build-webkit-reftests.py
+-->
+"""
+
+for filename, text in files.items():
+ if re_link_match.search(text):
+ with open(os.path.join(parentdir, filename.replace("appearance-", "webkit-appearance-")), "w") as outfile:
+ outfile.write(warning + text.replace("appearance:", "-webkit-appearance:"))
diff --git a/testing/web-platform/tests/css/css-ui/tools/build-compute-kind-widget-fallback-props.py b/testing/web-platform/tests/css/css-ui/tools/build-compute-kind-widget-fallback-props.py
new file mode 100644
index 0000000000..baede8ee54
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/tools/build-compute-kind-widget-fallback-props.py
@@ -0,0 +1,122 @@
+#!/usr/bin/env python3
+import os, shutil
+
+target_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__))) + "/compute-kind-widget-generated"
+
+props = [
+ u"background-color",
+ u"border-top-color",
+ u"border-top-style",
+ u"border-top-width",
+ u"border-right-color",
+ u"border-right-style",
+ u"border-right-width",
+ u"border-bottom-color",
+ u"border-bottom-style",
+ u"border-bottom-width",
+ u"border-left-color",
+ u"border-left-style",
+ u"border-left-width",
+ u"border-block-start-color",
+ u"border-block-end-color",
+ u"border-inline-start-color",
+ u"border-inline-end-color",
+ u"border-block-start-style",
+ u"border-block-end-style",
+ u"border-inline-start-style",
+ u"border-inline-end-style",
+ u"border-block-start-width",
+ u"border-block-end-width",
+ u"border-inline-start-width",
+ u"border-inline-end-width",
+ u"background-image",
+ u"background-attachment",
+ u"background-position",
+ u"background-clip",
+ u"background-origin",
+ u"background-size",
+ u"border-image-source",
+ u"border-image-slice",
+ u"border-image-width",
+ u"border-image-outset",
+ u"border-image-repeat",
+ u"border-top-left-radius",
+ u"border-top-right-radius",
+ u"border-bottom-right-radius",
+ u"border-bottom-left-radius",
+ u"border-start-start-radius",
+ u"border-start-end-radius",
+ u"border-end-start-radius",
+ u"border-end-end-radius",
+]
+
+els = [
+ [u'link', u'<a id="link">a</a>'],
+ [u'button', u'<button id="button">button</button>'],
+ [u'input-button', u'<input id="button-input" type="button" value="input-button">'],
+ [u'input-submit', u'<input id="submit-input" type="submit" value="input-submit">'],
+ [u'input-reset', u'<input id="reset-input" type="reset" value="input-reset">'],
+ [u'input-text', u'<input id="text-input" type="text" value="input-text">'],
+ [u'input-search-text', u'<input id="search-text-input" type="search" value="input-search-text">'],
+ [u'input-search', u'<input id="search-input" type="search" value="input-search">'],
+ [u'range', u'<input id="range-input" type="range">'],
+ [u'checkbox-input', u'<input id="checkbox-input" type="checkbox">'],
+ [u'radio-input', u'<input id="radio-input" type="radio">'],
+ [u'color-input', u'<input id="color-input" type="color">'],
+ [u'textarea', u'<textarea id="textarea">textarea</textarea>'],
+ [u'select-listbox', u'<select multiple id="select-listbox"><option>select-listbox</option></select>'],
+ [u'select-dropdown-box', u'<select id="select-dropdown-box"><option>select-dropdown-box</option></select>'],
+ [u'select-menulist-button', u'<select id="select-menulist-button"><option>select-menulist-button</option></select>'],
+ [u'meter', u'<meter id="meter" value=0.5></meter>'],
+ [u'progress', u'<progress id="progress" value=0.5></progress>'],
+]
+
+template = u"""<!-- DO NOT EDIT. This file has been generated. Source:
+ ./tools/build-compute-kind-widget-fallback-props.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: Compute kind of widget: {prop} disables native appearance for {el_id}</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#computing-kind-widget">
+<meta name="assert" content="appropriate widget is returned when authorProps includes {prop}.">
+<link rel="match" href="../compute-kind-widget-fallback-{el_id}-ref.html">
+<style>
+ #container {{ width: 500px; }}
+ #container > #search-text-input {{ appearance: textfield; }}
+ #container > #select-menulist-button {{ appearance: none; appearance: menulist-button; }}
+</style>
+
+<div id="container">
+ {el_markup}
+</div>
+
+<script>
+// Set author-level CSS that matches UA style, but don't use the 'revert' value.
+const elements = document.querySelectorAll('#container > *');
+const prop = "{prop}";
+for (const el of elements) {{
+ el.style.setProperty(prop, getComputedStyle(el).getPropertyValue(prop));
+}}
+</script>
+"""
+
+# Generate tests
+
+# wipe target_dir
+if os.path.isdir(target_dir):
+ shutil.rmtree(target_dir)
+
+def write_file(path, content):
+ path = os.path.join(target_dir, path)
+ os.makedirs(os.path.dirname(path), exist_ok=True)
+ file = open(os.path.join(target_dir, path), 'w')
+ file.write(content)
+ file.close()
+
+def generate_tests(prop, el_id, el_markup):
+ test = template.format(prop=prop, el_id=el_id, el_markup=el_markup)
+ write_file(f"kind-of-widget-fallback-{el_id}-{prop}-001.html", test)
+
+for prop in props:
+ for el_id, el_markup in els:
+ generate_tests(prop, el_id, el_markup)
diff --git a/testing/web-platform/tests/css/css-ui/translucent-outline-ref.html b/testing/web-platform/tests/css/css-ui/translucent-outline-ref.html
new file mode 100644
index 0000000000..383e256533
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/translucent-outline-ref.html
@@ -0,0 +1,3 @@
+<!DOCTYPE html>
+There should be a square in uniform pale green color.
+<div style="width: 100px; height: 100px; background: rgba(0, 128, 0, 0.5)"></div>
diff --git a/testing/web-platform/tests/css/css-ui/translucent-outline.html b/testing/web-platform/tests/css/css-ui/translucent-outline.html
new file mode 100644
index 0000000000..38109a56a5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/translucent-outline.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<title>Outline with translucent color, will-change:transform and negative-z index child</title>
+<link rel="help" title="7.1. 'outline' property" href="http://www.w3.org/TR/css3-ui/#outline">
+<link rel="match" href="translucent-outline-ref.html">
+<style>div { will-change: transform; }</style>
+There should be a square in uniform pale green color.
+<div style="position: relative; top: 25px; left: 25px;
+ width: 50px; height: 50px;
+ outline: 25px solid rgba(0, 128, 0, 0.5);
+ background: rgba(0, 128, 0, 0.5)">
+ <div style="position: absolute; width: 10px; height: 10px; z-index: -1"></div>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/user-select-001.html b/testing/web-platform/tests/css/css-ui/user-select-001.html
new file mode 100644
index 0000000000..35febc38bb
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/user-select-001.html
@@ -0,0 +1,42 @@
+<!DOCTYPE html>
+<html>
+ <meta charset="utf-8">
+ <title>CSS Basic User Interface Test: Block children of a inline parent with "user-select:text" should be selectable even with a user-select: none ancestor</title>
+ <link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
+ <link rel="author" title="Mozilla" href="https://www.mozilla.org/">
+ <link rel="help" href="https://drafts.csswg.org/css-ui/#propdef-user-select">
+ <link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1743074">
+
+ <script src="/resources/testharness.js"></script>
+ <script src="/resources/testharnessreport.js"></script>
+ <script src="/resources/testdriver.js"></script>
+ <script src="/resources/testdriver-actions.js"></script>
+ <script src='/resources/testdriver-vendor.js'></script>
+
+ <style>
+ :root {
+ user-select: none;
+ }
+ </style>
+
+ <span style="user-select: text">
+ <div>Let's select this <b id="target">word</b></div>
+ </span>
+
+ <script>
+ promise_test(async function() {
+ let target = document.getElementById("target");
+ let actions = new test_driver.Actions();
+
+ // Simulate a double click to select a word.
+ await actions.pointerMove(5, 5, {origin: target})
+ .pointerDown()
+ .pointerUp()
+ .pointerDown()
+ .pointerUp()
+ .send();
+ assert_equals(window.getSelection().toString(), "word",
+ "The text 'word' should be selectable.")
+ }, "Select the text 'word'");
+ </script>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/user-select-inheritance.html b/testing/web-platform/tests/css/css-ui/user-select-inheritance.html
new file mode 100644
index 0000000000..38a57e0285
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/user-select-inheritance.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<title>Tests inheritance of CSS user-select property</title>
+<link rel="author" title="Google LLC" href="https://www.google.com/">
+<link rel="help" href="https://w3c.github.io/csswg-drafts/css-ui/#content-selection">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="container">abc<div id="target">xyz</div>def</div>
+<script>
+const container = document.getElementById('container');
+const target = document.getElementById('target');
+function test_inheritance(value) {
+ const property = `user-select:${value}`;
+ test(() => {
+ container.setAttribute('style', property);
+ assert_equals(getComputedStyle(container).userSelect, value,
+ `${property} should be supported.`);
+ assert_equals(getComputedStyle(target).userSelect, 'auto',
+ `${property} should not be inherited.`);
+ }, `${property} should not be inherited.`);
+}
+test_inheritance('all');
+test_inheritance('auto');
+test_inheritance('contain');
+test_inheritance('none');
+test_inheritance('text');
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/user-select-none-in-editable.html b/testing/web-platform/tests/css/css-ui/user-select-none-in-editable.html
new file mode 100644
index 0000000000..c8718dd14b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/user-select-none-in-editable.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<html>
+<head>
+<title>Test user-select: none in editable contexts</title>
+<meta charset="utf-8">
+<link rel="author" title="Tim Nguyen" href="https://github.com/nt1m">
+<link rel="help" href="https://drafts.csswg.org/css-ui/#valdef-user-select-none">
+<style>
+.user-select-none {
+ -webkit-user-select: none;
+ user-select: none;
+}
+</style>
+</head>
+<body>
+<div id="container">
+Manual step:
+<ol>
+<li>Move caret after "c"</li>
+<li>Hit right arrow key twice</li>
+<li>Caret should be after "Y"</li>
+</ol>
+<div id="outer" contenteditable="true">
+abc<span id="inner" class="user-select-none">XYZ</span>def
+</div>
+</div>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+setup({ single_test: true });
+const selection = window.getSelection();
+selection.collapse(document.getElementById("outer"), 1);
+selection.modify("move", "forward", "character");
+selection.modify("move", "forward", "character");
+assert_equals(selection.focusNode, document.getElementById("inner").firstChild);
+assert_equals(selection.focusOffset, 2);
+done();
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/user-select-none-on-input.html b/testing/web-platform/tests/css/css-ui/user-select-none-on-input.html
new file mode 100644
index 0000000000..42186dd620
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/user-select-none-on-input.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <title>Test user-select: none on input/textarea does not affect editability</title>
+ <meta charset="utf-8">
+ <link rel="author" title="Tim Nguyen" href="https://github.com/nt1m">
+ <link rel="help" href="https://drafts.csswg.org/css-ui/#valdef-user-select-none">
+ <style>
+ input, textarea {
+ -webkit-user-select: none;
+ user-select: none;
+ }
+ </style>
+</head>
+<body>
+ <input>
+ <textarea></textarea>
+ <script src="/resources/testharness.js"></script>
+ <script src="/resources/testharnessreport.js"></script>
+ <script src="/resources/testdriver.js"></script>
+ <script src="/resources/testdriver-vendor.js"></script>
+ <script>
+ async function testElement(element) {
+ const expectedText = "xyz";
+ element.focus();
+ await test_driver.send_keys(element, expectedText);
+ assert_equals(element.value, expectedText, "Text should be entered");
+ element.select();
+ assert_equals(element.value.substring(element.selectionStart, element.selectionEnd), expectedText, "Text should be programatically selectable");
+ await test_driver.send_keys(element, "\uE003");
+ assert_equals(element.value, "", "Text should be cleared");
+ }
+ promise_test(() => {
+ return testElement(document.querySelector("input"))
+ }, "Test <input> with user-select: none");
+ promise_test(() => {
+ return testElement(document.querySelector("textarea"))
+ }, "Test <textarea> with user-select: none");
+ </script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-ui/webkit-appearance-auto-001.html b/testing/web-platform/tests/css/css-ui/webkit-appearance-auto-001.html
new file mode 100644
index 0000000000..fb0261b020
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/webkit-appearance-auto-001.html
@@ -0,0 +1,32 @@
+<!-- DO NOT EDIT THIS FILE.
+Edit the appearance-* file instead and then run:
+ ./tools/appearance-build-webkit-reftests.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: -webkit-appearance: auto</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="auto is supported.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * { -webkit-appearance: none; -webkit-appearance: auto; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/webkit-appearance-auto-input-non-widget-001.html b/testing/web-platform/tests/css/css-ui/webkit-appearance-auto-input-non-widget-001.html
new file mode 100644
index 0000000000..5f5ddde393
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/webkit-appearance-auto-input-non-widget-001.html
@@ -0,0 +1,16 @@
+<!-- DO NOT EDIT THIS FILE.
+Edit the appearance-* file instead and then run:
+ ./tools/appearance-build-webkit-reftests.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: -webkit-appearance: auto on non-widget input elements</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="The default widget type for these elements is none.">
+<link rel="match" href="appearance-auto-input-non-widget-001-ref.html">
+<style>
+input { -webkit-appearance: auto; }
+</style>
+<input type="hidden" value="abc">
+<input type="image" value="def">
+<input type="file">
diff --git a/testing/web-platform/tests/css/css-ui/webkit-appearance-button-001.html b/testing/web-platform/tests/css/css-ui/webkit-appearance-button-001.html
new file mode 100644
index 0000000000..cf36b42384
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/webkit-appearance-button-001.html
@@ -0,0 +1,32 @@
+<!-- DO NOT EDIT THIS FILE.
+Edit the appearance-* file instead and then run:
+ ./tools/appearance-build-webkit-reftests.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: -webkit-appearance: button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="button is an alias to auto.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * { -webkit-appearance: none; -webkit-appearance: button; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/webkit-appearance-checkbox-001.html b/testing/web-platform/tests/css/css-ui/webkit-appearance-checkbox-001.html
new file mode 100644
index 0000000000..09dd3d76cd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/webkit-appearance-checkbox-001.html
@@ -0,0 +1,32 @@
+<!-- DO NOT EDIT THIS FILE.
+Edit the appearance-* file instead and then run:
+ ./tools/appearance-build-webkit-reftests.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: -webkit-appearance: checkbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="checkbox is an alias to auto.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * { -webkit-appearance: none; -webkit-appearance: checkbox; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/webkit-appearance-listbox-001.html b/testing/web-platform/tests/css/css-ui/webkit-appearance-listbox-001.html
new file mode 100644
index 0000000000..2a33758e2b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/webkit-appearance-listbox-001.html
@@ -0,0 +1,32 @@
+<!-- DO NOT EDIT THIS FILE.
+Edit the appearance-* file instead and then run:
+ ./tools/appearance-build-webkit-reftests.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: -webkit-appearance: listbox</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="listbox is an alias to auto.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * { -webkit-appearance: none; -webkit-appearance: listbox; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/webkit-appearance-menulist-001.html b/testing/web-platform/tests/css/css-ui/webkit-appearance-menulist-001.html
new file mode 100644
index 0000000000..b9826c4bd2
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/webkit-appearance-menulist-001.html
@@ -0,0 +1,32 @@
+<!-- DO NOT EDIT THIS FILE.
+Edit the appearance-* file instead and then run:
+ ./tools/appearance-build-webkit-reftests.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: -webkit-appearance: menulist</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="menulist is an alias to auto.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * { -webkit-appearance: none; -webkit-appearance: menulist; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/webkit-appearance-menulist-button-001.html b/testing/web-platform/tests/css/css-ui/webkit-appearance-menulist-button-001.html
new file mode 100644
index 0000000000..ba4016a495
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/webkit-appearance-menulist-button-001.html
@@ -0,0 +1,32 @@
+<!-- DO NOT EDIT THIS FILE.
+Edit the appearance-* file instead and then run:
+ ./tools/appearance-build-webkit-reftests.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: -webkit-appearance: menulist-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="menulist-button is an alias to auto except on drop-down select.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > *:not(#drop-down-select) { -webkit-appearance: none; -webkit-appearance: menulist-button; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select id="drop-down-select"><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/webkit-appearance-menulist-button-002.tentative.html b/testing/web-platform/tests/css/css-ui/webkit-appearance-menulist-button-002.tentative.html
new file mode 100644
index 0000000000..9fccd82713
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/webkit-appearance-menulist-button-002.tentative.html
@@ -0,0 +1,44 @@
+<!-- DO NOT EDIT THIS FILE.
+Edit the appearance-* file instead and then run:
+ ./tools/appearance-build-webkit-reftests.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: -webkit-appearance: menulist-button on drop-down select</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="menulist-button is NOT an alias to auto on drop-down select.">
+<link rel="mismatch" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > #drop-down-select { -webkit-appearance: none; -webkit-appearance: menulist-button; }
+</style>
+<!--
+ Test marked as tentative since although css-ui says:
+
+ For drop-down box select elements, the element is rendered as a drop-down
+ box, including a "drop-down button", but not necessarily using a native
+ control of the host operating system. For such elements, CSS properties
+ such as color, background-color, and border (that can be disregarded for
+ auto) should not be disregarded.
+
+ there is no requirement that this rendering is any different from the
+ automatic widget appearance of a drop-down select.
+ -->
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select id="drop-down-select"><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/webkit-appearance-meter-001.html b/testing/web-platform/tests/css/css-ui/webkit-appearance-meter-001.html
new file mode 100644
index 0000000000..05fb5ce25f
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/webkit-appearance-meter-001.html
@@ -0,0 +1,32 @@
+<!-- DO NOT EDIT THIS FILE.
+Edit the appearance-* file instead and then run:
+ ./tools/appearance-build-webkit-reftests.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: -webkit-appearance: meter</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="meter is an alias to auto.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * { -webkit-appearance: none; -webkit-appearance: meter; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/webkit-appearance-parsing.html b/testing/web-platform/tests/css/css-ui/webkit-appearance-parsing.html
new file mode 100644
index 0000000000..0f08eab222
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/webkit-appearance-parsing.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <meta charset="utf-8">
+ <title>Parsing of `-webkit-appearance`</title>
+ <link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+ <script src="/resources/testharness.js"></script>
+ <script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<script>
+test(function() {
+ var input = document.createElement('input');
+ input.setAttribute('style', '-webkit-appearance: none;');
+
+ assert_equals(input.style.getPropertyValue('appearance'), 'none');
+}, 'parsing via attribute change steps of CSS declaration block\'s owner node');
+
+test(function() {
+ var input = document.createElement('input');
+ input.style.cssText = '-webkit-appearance: none;';
+
+ assert_equals(input.style.getPropertyValue('appearance'), 'none');
+}, 'parsing via modification of cssText');
+
+test(function(t) {
+ var style = document.createElement('style');
+ style.appendChild(
+ document.createTextNode('#foo { -webkit-appearance: none; }')
+ );
+ document.body.appendChild(style);
+ t.add_cleanup(function() {
+ document.body.removeChild(style);
+ });
+
+ assert_equals(style.sheet.cssRules.length, 1);
+ assert_equals(
+ style.sheet.cssRules[0].style.getPropertyValue('appearance'),
+ 'none'
+ );
+}, 'parsing via creation of CSS declaration block');
+</script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/webkit-appearance-progress-bar-001.html b/testing/web-platform/tests/css/css-ui/webkit-appearance-progress-bar-001.html
new file mode 100644
index 0000000000..b989502902
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/webkit-appearance-progress-bar-001.html
@@ -0,0 +1,32 @@
+<!-- DO NOT EDIT THIS FILE.
+Edit the appearance-* file instead and then run:
+ ./tools/appearance-build-webkit-reftests.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: -webkit-appearance: progress-bar</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="progress-bar is an alias to auto.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * { -webkit-appearance: none; -webkit-appearance: progress-bar; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/webkit-appearance-progress-bar-002.html b/testing/web-platform/tests/css/css-ui/webkit-appearance-progress-bar-002.html
new file mode 100644
index 0000000000..5394836b75
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/webkit-appearance-progress-bar-002.html
@@ -0,0 +1,20 @@
+<!-- DO NOT EDIT THIS FILE.
+Edit the appearance-* file instead and then run:
+ ./tools/appearance-build-webkit-reftests.py
+-->
+<!doctype html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: progress dynamic appearance</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<link rel="match" href="appearance-progress-bar-002-ref.html">
+<style>
+ #progress1 { -webkit-appearance: none }
+ #progress2 { -webkit-appearance: auto }
+</style>
+<progress id="progress1" value="0.5">
+<progress id="progress2" value="0.5">
+<script>
+ document.body.offsetTop;
+ progress1.style.appearance = "auto";
+ progress2.style.appearance = "none";
+</script>
diff --git a/testing/web-platform/tests/css/css-ui/webkit-appearance-property.html b/testing/web-platform/tests/css/css-ui/webkit-appearance-property.html
new file mode 100644
index 0000000000..fb3f7df2d4
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/webkit-appearance-property.html
@@ -0,0 +1,128 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <meta charset="utf-8">
+ <title>Property references to `-webkit-appearance`</title>
+ <link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+ <script src="/resources/testharness.js"></script>
+ <script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<script>
+function create(initialValue) {
+ var style = document.createElement('input').style;
+
+ style.setProperty('appearance', initialValue);
+
+ return style;
+}
+
+test(function() {
+ var style = create('');
+
+ style.setProperty('-webkit-appearance', 'none');
+
+ assert_equals(style.appearance, 'none');
+}, 'setProperty - CSS property name');
+
+test(function() {
+ var style = create('');
+
+ style.setProperty('WebkitAppearance', 'none');
+
+ assert_equals(style.appearance, '');
+}, 'setProperty - camel-cased property name (ignored)');
+
+test(function() {
+ var style = create('');
+
+ style.setProperty('webkitAppearance', 'none');
+
+ assert_equals(style.appearance, '');
+}, 'setProperty - webkit-cased property name (ignored)');
+
+test(function() {
+ var style = create('none');
+
+ style.removeProperty('-webkit-appearance');
+
+ assert_equals(style.appearance, '');
+}, 'removeProperty - CSS property name');
+
+test(function() {
+ var style = create('none');
+
+ style.removeProperty('WebkitAppearance');
+
+ assert_equals(style.appearance, 'none');
+}, 'removeProperty - camel-cased property name (ignored)');
+
+test(function() {
+ var style = create('none');
+
+ style.removeProperty('webkitAppearance');
+
+ assert_equals(style.appearance, 'none');
+}, 'removeProperty - webkit-cased property name (ignored)');
+
+test(function() {
+ var style = create('');
+
+ style['-webkit-appearance'] = 'none';
+
+ assert_equals(style.appearance, 'none');
+}, 'property assignment - CSS property name');
+
+test(function() {
+ var style = create('');
+
+ style['WebkitAppearance'] = 'none';
+
+ assert_equals(style.appearance, 'none');
+}, 'property assignment - camel-cased property name');
+
+test(function() {
+ var style = create('');
+
+ style['webkitAppearance'] = 'none';
+
+ assert_equals(style.appearance, 'none');
+}, 'property assignment - webkit-cased property name');
+
+test(function() {
+ var style = create('none');
+
+ assert_equals(style.getPropertyValue('-webkit-appearance'), 'none');
+}, 'getPropertyValue - CSS property name');
+
+test(function() {
+ var style = create('none');
+
+ assert_equals(style.getPropertyValue('WebkitAppearance'), '');
+}, 'getPropertyValue - camel-cased property name (ignored)');
+
+test(function() {
+ var style = create('none');
+
+ assert_equals(style.getPropertyValue('webkitAppearance'), '');
+}, 'getPropertyValue - webkit-cased property name (ignored)');
+
+test(function() {
+ var style = create('none');
+
+ assert_equals(style['-webkit-appearance'], 'none');
+}, 'property access - CSS property name');
+
+test(function() {
+ var style = create('none');
+
+ assert_equals(style['WebkitAppearance'], 'none');
+}, 'property access - camel-cased property name');
+
+test(function() {
+ var style = create('none');
+
+ assert_equals(style['webkitAppearance'], 'none');
+}, 'property access - webkit-cased property name');
+</script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/webkit-appearance-push-button-001.html b/testing/web-platform/tests/css/css-ui/webkit-appearance-push-button-001.html
new file mode 100644
index 0000000000..6f44498d46
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/webkit-appearance-push-button-001.html
@@ -0,0 +1,32 @@
+<!-- DO NOT EDIT THIS FILE.
+Edit the appearance-* file instead and then run:
+ ./tools/appearance-build-webkit-reftests.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: -webkit-appearance: push-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="push-button is an alias to auto.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * { -webkit-appearance: none; -webkit-appearance: push-button; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/webkit-appearance-radio-001.html b/testing/web-platform/tests/css/css-ui/webkit-appearance-radio-001.html
new file mode 100644
index 0000000000..52d9fb22ac
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/webkit-appearance-radio-001.html
@@ -0,0 +1,32 @@
+<!-- DO NOT EDIT THIS FILE.
+Edit the appearance-* file instead and then run:
+ ./tools/appearance-build-webkit-reftests.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: -webkit-appearance: radio</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="radio is an alias to auto.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * { -webkit-appearance: none; -webkit-appearance: radio; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/webkit-appearance-searchfield-001.html b/testing/web-platform/tests/css/css-ui/webkit-appearance-searchfield-001.html
new file mode 100644
index 0000000000..8abd91e3c8
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/webkit-appearance-searchfield-001.html
@@ -0,0 +1,32 @@
+<!-- DO NOT EDIT THIS FILE.
+Edit the appearance-* file instead and then run:
+ ./tools/appearance-build-webkit-reftests.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: -webkit-appearance: searchfield</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="searchfield is an alias to auto.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * { -webkit-appearance: none; -webkit-appearance: searchfield; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/webkit-appearance-serialization.html b/testing/web-platform/tests/css/css-ui/webkit-appearance-serialization.html
new file mode 100644
index 0000000000..b325fd5d6c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/webkit-appearance-serialization.html
@@ -0,0 +1,48 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <meta charset="utf-8">
+ <title>Serialization of `-webkit-appearance`</title>
+ <link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+ <script src="/resources/testharness.js"></script>
+ <script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<script>
+test(function() {
+ var input = document.createElement('input');
+ input.style.setProperty('-webkit-appearance', 'none');
+
+ assert_equals(input.style.cssText, 'appearance: none;');
+}, 'serialization via CSSStyleDeclaration');
+
+test(function(t) {
+ var style = document.createElement('style');
+ document.body.appendChild(style);
+ t.add_cleanup(function() {
+ document.body.removeChild(style);
+ });
+ style.sheet.insertRule('#foo {}', 0);
+ style.sheet.cssRules[0].style.setProperty('-webkit-appearance', 'none');
+
+ assert_equals(
+ style.sheet.cssRules[0].cssText, '#foo { appearance: none; }'
+ );
+}, 'serialization via CSSStyleRule');
+
+test(function(t) {
+ var style = document.createElement('style');
+ document.body.appendChild(style);
+ t.add_cleanup(function() {
+ document.body.removeChild(style);
+ });
+ style.sheet.insertRule('@media print { #foo {} }', 0);
+ style.sheet.cssRules[0].cssRules[0].style.setProperty('-webkit-appearance', 'none');
+
+ assert_equals(
+ style.sheet.cssRules[0].cssText,
+ '@media print {\n #foo { appearance: none; }\n}'
+ );
+}, 'serialization via CSSMediaRule');
+</script>
+</body>
diff --git a/testing/web-platform/tests/css/css-ui/webkit-appearance-slider-horizontal-001.html b/testing/web-platform/tests/css/css-ui/webkit-appearance-slider-horizontal-001.html
new file mode 100644
index 0000000000..a9375b5088
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/webkit-appearance-slider-horizontal-001.html
@@ -0,0 +1,32 @@
+<!-- DO NOT EDIT THIS FILE.
+Edit the appearance-* file instead and then run:
+ ./tools/appearance-build-webkit-reftests.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: -webkit-appearance: slider-horizontal</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="slider-horizontal is an alias to auto.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * { -webkit-appearance: none; -webkit-appearance: slider-horizontal; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/webkit-appearance-square-button-001.html b/testing/web-platform/tests/css/css-ui/webkit-appearance-square-button-001.html
new file mode 100644
index 0000000000..f486329943
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/webkit-appearance-square-button-001.html
@@ -0,0 +1,32 @@
+<!-- DO NOT EDIT THIS FILE.
+Edit the appearance-* file instead and then run:
+ ./tools/appearance-build-webkit-reftests.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: -webkit-appearance: square-button</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="square-button is an alias to auto.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * { -webkit-appearance: none; -webkit-appearance: square-button; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/webkit-appearance-textarea-001.html b/testing/web-platform/tests/css/css-ui/webkit-appearance-textarea-001.html
new file mode 100644
index 0000000000..cf3a15f4db
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/webkit-appearance-textarea-001.html
@@ -0,0 +1,32 @@
+<!-- DO NOT EDIT THIS FILE.
+Edit the appearance-* file instead and then run:
+ ./tools/appearance-build-webkit-reftests.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: -webkit-appearance: textarea</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="textarea is an alias to auto.">
+<link rel="match" href="appearance-auto-ref.html">
+<style>
+ #container { width: 500px; }
+ #container > * { -webkit-appearance: none; -webkit-appearance: textarea; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>
diff --git a/testing/web-platform/tests/css/css-ui/webkit-appearance-textfield-001.html b/testing/web-platform/tests/css/css-ui/webkit-appearance-textfield-001.html
new file mode 100644
index 0000000000..058e1be83b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/webkit-appearance-textfield-001.html
@@ -0,0 +1,36 @@
+<!-- DO NOT EDIT THIS FILE.
+Edit the appearance-* file instead and then run:
+ ./tools/appearance-build-webkit-reftests.py
+-->
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Basic User Interface Test: -webkit-appearance: textfield</title>
+<link rel="help" href="https://drafts.csswg.org/css-ui-4/#appearance-switching">
+<meta name="assert" content="textfield is an alias to auto except on input type=search.">
+<link rel="match" href="appearance-textfield-001-ref.html">
+<style>
+ #container { width: 500px; }
+ /*
+ * If the value being tested is not supported, then 'none' is used instead,
+ * which is intended to fail the test.
+ */
+ #container > * { -webkit-appearance: none; -webkit-appearance: textfield; }
+</style>
+<div id="container">
+ <a>a</a>
+ <button>button</button>
+ <input type="text" value="input-text">
+ <input type="search" value="input-search">
+ <textarea>textarea</textarea>
+ <input type="button" value="input-button">
+ <input type="submit" value="input-submit">
+ <input type="reset" value="input-reset">
+ <input type="range">
+ <input type="checkbox">
+ <input type="radio">
+ <input type="color">
+ <select><option>select</option></select>
+ <select multiple><option>select-multiple</option></select>
+ <meter value=0.5></meter>
+ <progress value=0.5></progress>
+</div>