summaryrefslogtreecommitdiffstats
path: root/layout/reftests/async-scrolling/dynamic-toolbar-sticky-top-1.html
diff options
context:
space:
mode:
Diffstat (limited to 'layout/reftests/async-scrolling/dynamic-toolbar-sticky-top-1.html')
-rw-r--r--layout/reftests/async-scrolling/dynamic-toolbar-sticky-top-1.html40
1 files changed, 40 insertions, 0 deletions
diff --git a/layout/reftests/async-scrolling/dynamic-toolbar-sticky-top-1.html b/layout/reftests/async-scrolling/dynamic-toolbar-sticky-top-1.html
new file mode 100644
index 0000000000..1952a9c086
--- /dev/null
+++ b/layout/reftests/async-scrolling/dynamic-toolbar-sticky-top-1.html
@@ -0,0 +1,40 @@
+<!DOCTYPE HTML>
+<!--
+ Tests that setting a fixed top margin in the compositor results
+ in the margin being applied to an element sticky to the top.
+
+ The fixed margin is specified as a test-pref in reftest.list.
+
+ The purpose of the fixed margin is to compensate for the transform that the
+ dynamic toolbar applies to the entire content area. We don't have a way of
+ simulating that transform in a reftest, so the fixed margin in isolation will
+ cause the fixed element to be offset from the top of the screen.
+-->
+<html>
+<meta name="viewport" content="width=device-width">
+<style>
+html {
+ scrollbar-width: none;
+}
+#scrolled {
+ display: flex;
+ justify-content: space-around;
+ align-items: flex-start;
+
+ height: 2000px;
+ width: 100%;
+}
+#sticky {
+ width: 100%;
+ height: 200px;
+ position: sticky;
+ top: 20px;
+ background: red;
+}
+</style>
+<body>
+ <div id="scrolled">
+ <div id="sticky"></div>
+ </div>
+</body>
+</html>