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<!DOCTYPE html>
<html>
<meta charset="utf-8">
<title>CSS Position Test: Test position:sticky element with large top in an overflow container</title>
<link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
<link rel="author" title="Mozilla" href="http://www.mozilla.org/">
<link rel="help" href="https://drafts.csswg.org/css-position/#sticky-pos">
<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1598112">
<link rel="help" href="https://github.com/w3c/csswg-drafts/issues/2794">
<link rel="match" href="position-sticky-large-top-ref.html">
<meta name="assert" content="This test verifies the position of a position:sticky element with large top value can be reached by scrolling the overflow container.">
<style>
.scroll {
border: 5px solid blue;
overflow: auto;
height: 200px;
width: 200px;
}
.block {
width: 100%;
height: 200px;
background: yellow;
}
.sticky {
position: sticky;
background: purple;
width: 50px;
height: 50px;
top: 200px;
}
</style>
<script>
function runTest() {
document.getElementById("scroll2").scrollTop = 50;
}
</script>
<body onload="runTest();">
<!-- test before scroll -->
<div class="scroll">
<div class="sticky"></div>
<div class="block"></div>
</div>
<!-- test after scroll -->
<div class="scroll" id="scroll2">
<div class="sticky"></div>
<div class="block"></div>
</div>
</body>
</html>
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