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<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<style>
#circles, #circles div {
border: 1em solid blue;
border-radius:50%;
margin: auto;
}
#circles { width:9em; height:9em; }
</style>
</head>
<body>
<p>These tests are from the spec: <a href="http://dev.w3.org/csswg/css3-flexbox/#auto-margins">http://dev.w3.org/csswg/css3-flexbox/#auto-margins</a>.</p>
<p>The black rectangle should be centered vertically and horizontally.</p>
<div style="width: 4em; height: 4em; background: silver">
<table style="width: 100%; height: 100%;"><tr><td style="text-align: center; font-family: Ahem;">OK</td></tr></table>
</div>
<div style="width: 4em; height: 4em; margin-top: 10px; background: silver; writing-mode: vertical-rl">
<table style="width: 100%; height: 100%;"><tr><td style="text-align: center; font-family: Ahem;">OK</td></tr></table>
</div>
<p>You should see 3 blue concentric circles.</p>
<div id="circles">
<div style="width: 5em; height: 5em; margin-top: 1em;">
<div style="width: 1em; height: 1em; margin-top: 1em;"></div>
</div>
</div>
<p>The computed style of each margin should not be 0.<br>OK: PASS<br>Vertical OK: PASS</p>
</body>
</html>