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Test Info:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
<head>
<title>CSS Test: Units: ex</title>
<link rel="author" title="Ian Hickson" href="mailto:ian@hixie.ch"/>
<link rel="reviewer" title="GĂ©rard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" /> <!-- 2012-06-29 -->
<link rel="alternate" href="http://www.hixie.ch/tests/adhoc/css/units/004.html" type="text/html"/>
<link rel="match" href="units-004-ref.xht" />
<meta name="flags" content="ahem" />
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<style type="text/css">
.test { font: 20px/1 Ahem; min-width: 200px; min-height: 200px; background: red; float: left; }
.em { width: 10em; height: 5em; background: green; }
.ex { width: 12.5ex; height: 6.25ex; background: green; }
</style>
</head>
<body>
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div class="test">
<div class="em"></div>
<div class="ex"></div>
</div>
</body>
</html>