<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" >
<html>
<head>
<title>col_span</title>
</head>

<body>
<p>The background color should span all columns</p>
<table border>
<colgroup>
<col span="4" style="background-color: lime">
</colgroup>
<tr>
<td>Column 1, row 1
</td>
<td>Column 2, row 1
</td>
<td>Column 3, row 1
</td>
<td>Column 4, row 1
</td>
</tr>

</table>
</body>

</html>