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<!DOCTYPE HTML>
<title> absolutely positioned element should be vertically centered even if the height is bigger than that of the containing block (reference) - bug 812899</title>
<style>
body > div {
font-size: 16px;
position: relative;
border: red solid;
margin-top: 5em;
width: 5em;
height: 5em;
}
body > div > div {
position: absolute;
border: medium solid blue;
margin: -23px auto;
height: 150%;
width: 150%;
left: 0px;
right: 0px;
top: 0px;
bottom: 0px;
}
</style>
<body>
<div>
<div></div>
</div>
</body>
</html>
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