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-rw-r--r--testing/web-platform/tests/css/css-scroll-snap/support/scroll-target-snap-001-iframe.html55
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diff --git a/testing/web-platform/tests/css/css-scroll-snap/support/scroll-target-snap-001-iframe.html b/testing/web-platform/tests/css/css-scroll-snap/support/scroll-target-snap-001-iframe.html
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+++ b/testing/web-platform/tests/css/css-scroll-snap/support/scroll-target-snap-001-iframe.html
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+<!DOCTYPE html>
+<title>iframe for #target and snap position with snapping on</title>
+<style type='text/css'>
+ html, body {
+ margin: 0; padding: 0;
+ }
+ html {
+ /* to make failing more obvious */
+ background: 0 1em / 100% 1em linear-gradient(red, red) repeat-x fixed;
+ /* avoid anti-aliasing issues */
+ font: 20px/1 sans-serif;
+ scrollbar-width: none;
+
+ /* turn on snapping */
+ scroll-snap-type: block;
+ }
+ div {
+ height: 1em;
+ }
+ /* Note: we use "start" for #target to avoid spec ambiguity where
+ * scroll-snap-align conflicts with default ScrollIntoViewOptions.
+ * See https://github.com/w3c/csswg-drafts/issues/9576.
+ */
+ #target { scroll-margin: 2em 0 0;
+ scroll-snap-align: start; } /* set up a snap position */
+ #stripe { background: green; } /* color part of the snap area */
+ .fail { color: red; } /* make failing more obvious */
+
+ /* Try to foil the UA */
+ .foilup { margin-bottom: -1em; scroll-snap-align: start; }
+ .foildn { margin-top: -1em; scroll-snap-align: end; }
+
+ /* emulate `scrollbar-width: none` for browsers that don't support it yet */
+ ::-webkit-scrollbar { display: none; }
+</style>
+
+<div></div>
+<div></div>
+<div></div>
+<div></div>
+<div class="foilup"></div>
+<div class="fail">FAIL</div>
+<div></div>
+<div id="stripe"></div>
+<div class="foilup"></div>
+<div id="target"></div>
+<div class="foildn"></div>
+<div></div>
+<div class="fail">FAIL</div>
+<div class="foildn"></div>
+<div></div>
+<div class="foildn"></div>
+<div></div>
+<div></div>
+<div></div>