<!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: Column group boxes occupy same cells as the columns they contain</title>
<link rel="author" title="Microsoft" href="http://www.microsoft.com/" />
<link rel="help" href="http://www.w3.org/TR/CSS21/tables.html#table-layout" />
<meta name="assert" content="A column group box occupies the same cells as the columns it contains." />
<style type="text/css">
#black
{
background: blue;
}
td
{
border: 1px solid black;
height: 2em;
width: 2em;
}
</style>
</head>
<body>
<p>Test passes if the middle two columns in the table are blue.</p>
<table>
<colgroup>
<col />
</colgroup>
<colgroup id="black">
<col />
<col />
</colgroup>
<colgroup>
<col />
</colgroup>
<tr>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
</table>
</body>
</html>
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