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-rw-r--r--layout/reftests/web-animations/stacking-context-transform-changing-keyframe.html28
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diff --git a/layout/reftests/web-animations/stacking-context-transform-changing-keyframe.html b/layout/reftests/web-animations/stacking-context-transform-changing-keyframe.html
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+++ b/layout/reftests/web-animations/stacking-context-transform-changing-keyframe.html
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+<!DOCTYPE html>
+<html class="reftest-wait reftest-no-flush">
+<title>Changing keyframes to transform frames creates a stacking context</title>
+<style>
+span {
+ height: 100px;
+ width: 100px;
+ position: fixed;
+ background: green;
+ top: 50px;
+}
+#test {
+ width: 100px; height: 100px;
+ background: blue;
+}
+</style>
+<span></span>
+<div id="test"></div>
+<script>
+ var anim = document.getElementById("test")
+ .animate({ }, { duration: 100000 });
+ anim.ready.then(function() {
+ anim.effect.setKeyframes({ transform: ['none', 'none'] });
+ requestAnimationFrame(function() {
+ document.documentElement.classList.remove("reftest-wait");
+ });
+ });
+</script>