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<!DOCTYPE html>
<title>position:sticky should operate correctly for the root scroller</title>
<link rel="help" href="https://www.w3.org/TR/css-position-3/#sticky-pos" />
<meta name="assert" content="This test checks that position:sticky elements work when using the root (document) scroller" />
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
body {
/* Assumption: 3000px is taller than any user agents test window size. */
height: 3000px;
}
#sticky {
position: sticky;
top: 50px;
width: 200px;
height: 200px;
background-color: green;
}
</style>
<div id="sticky"></div>
<script>
test(() => {
window.scrollTo(0, 700);
assert_equals(sticky.offsetTop, 700 + 50);
}, 'Sticky elements work with the root (document) scroller');
</script>
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