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<!DOCTYPE html>
<html class=reftest-wait>
<title>View transitions: scroller child element</title>
<link rel="help" href="https://www.w3.org/TR/css-view-transitions-1/">
<link rel="author" href="mailto:vmpstr@chromium.org">
<link rel="match" href="scroller-child-ref.html">
<meta name="fuzzy" content="scroller-child-ref.html:0-5;0-800">
<script src="/common/reftest-wait.js"></script>
<style>
#target {
view-transition-name: target;
width: 500px;
height: 500px;
background: yellow;
}
#scroller {
overflow: scroll;
width: 100px;
height: 100px;
background: blue;
}
#child {
position: relative;
width: 2000px;
height: 2000px;
background: green;
}
html::view-transition-group(root) { animation-duration: 300s; }
html::view-transition-old(target) {
animation: unset;
opacity: 1;
}
html::view-transition-new(target) {
animation: unset;
opacity: 0;
}
</style>
<div id="target">
<div id="scroller">
<div id="child"></div>
</div>
</div>
<script>
failIfNot(document.startViewTransition, "Missing document.startViewTransition");
function runTest() {
scroller.scrollTop = 300;
let transition = document.startViewTransition();
transition.ready.then(() => requestAnimationFrame(takeScreenshot));
}
onload = () => requestAnimationFrame(() => requestAnimationFrame(runTest));
</script>
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