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<html>
<body>
<h1>The colgroup element is not always required</h1>
<p>
The colgroup element is not required if col element immediately inside and
no other colgroups preceding it.
</p>
<table>
<col span="2" style="background-color: red" />
<col style="background-color: green" />
<tr>
<th>Heading 1</th>
<th>Heading 2</th>
<th>Heading 3</th>
</tr>
<tr>
<td>CELL</td>
<td>CELL</td>
<td>CELL</td>
</tr>
</table>
</body>
</html>