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<!DOCTYPE html>
<html>
<title>CSS Flexbox: margin: auto and overflow: auto with nested flexboxes.</title>
<link rel="help" href="https://drafts.csswg.org/css-flexbox/#auto-margins">
<link rel="help" href="https://drafts.csswg.org/css-overflow-3/#overflow-properties">
<link rel="help" href="https://drafts.csswg.org/css-box-3/#margins">
<link rel="help" href="https://crbug.com/605682">
<meta name="assert" content="This test checks that 'margin: auto' set on the outer box gets properly handled when the inner box uses 'overflow: auto', in a layout with two nested flexboxes." />
<style>
html, body {
margin: 0;
padding: 0;
}
.flexbox {
display: flex;
background: papayawhip;
width: 800px;
}
.flexbox > div {
width: 300px;
height: 300px;
margin: 0 auto;
background: olive;
}
.flexbox > div > div {
overflow-y: auto;
height: 50px;
visibility: hidden;
}
.elm {
height: 10px;
}
</style>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>
<body>
<div id=log></div>
<p>Below there should be a olive square <em>centered</em> inside a papayawhip box.</p>
<div class="flexbox">
<div data-offset-x="250">
<div>
<div id="elm"></div>
</div>
</div>
</div>
<script>
document.body.offsetTop;
document.getElementById("elm").style.height = "800px";
checkLayout('.flexbox');
</script>
</body>
</html>
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