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<!DOCTYPE html>
<html class="reftest-wait">
<head>
<title>Test that subtree layout with nested overflow preserves scroll anchoring.</title>
<link rel="author" title="Chris Harrelson" href="mailto:chrishtr@chromium.org">
<link rel="help" href="https://drafts.csswg.org/css-scroll-anchoring/">
<link rel="match" href="nested-overflow-subtree-layout-ref.html">
<script src="/common/reftest-wait.js"></script>
</head>
<style>
#outer {
overflow: hidden;
width: 500px;
height: 500px;
}
#inner {
overflow: auto;
position: relative;
width: 500px;
height: 2000px;
}
p {
font: 48pt monospace;
}
</style>
</head>
<body>
<div id="outer">
<div id="inner">
<p>Anchor</p>
</div>
</div>
<script>
const outer = document.querySelector("#outer");
const inner = document.querySelector("#inner");
onload = () => {
requestAnimationFrame(() => {
requestAnimationFrame(() => {
outer.scrollTo(0, 70);
requestAnimationFrame(() => {
const elem = document.createElement("p");
elem.textContent = "FAIL";
inner.insertBefore(elem, inner.firstChild);
takeScreenshot();
});
});
});
};
</script>
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