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<!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">
<head>
<title>CSS Test: Top using 'em' units with a value of zero, 0em</title>
<link rel="author" title="Microsoft" href="http://www.microsoft.com/" />
<link rel="reviewer" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" /> <!-- 2012-09-14 -->
<link rel="help" href="http://www.w3.org/TR/CSS21/visuren.html#propdef-top" />
<link rel="help" href="http://www.w3.org/TR/CSS21/visuren.html#position-props" />
<link rel="match" href="../reference/ref-no-vert-space-between.xht" />
<meta name="flags" content="ahem" />
<meta name="assert" content="The 'top' property sets a zero length value in 'em' units." />
<style type="text/css">
div
{
position: relative;
}
#div1
{
border-top: blue solid 5px;
}
#div2
{
border-top: orange solid 5px;
top: 0em;
}
</style>
</head>
<body>
<p>Test passes if there is <strong>no space between</strong> the blue and orange lines.</p>
<div id="div1">
<div id="div2"></div>
</div>
</body>
</html>
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