HTML/CSS/Table Attributes/span
"span" sets the number of columns in a group
<HTML>
<BODY>
<table border="3" cellspacing="5" cellpadding="5">
<colgroup>
<col span="3" align="left" style="color:red; font-weight:bold">
<col span="1" align="center" style="color:green">
<col span="2" align="right" style="color:blue">
<tr>
<td>Column 1</td>
<td>Column 2</td>
<td>Column 3</td>
<td>Column 4</td>
<td>Column 5</td>
<td>Column 6</td>
</tr>
<tr>
<td>Cell 1</td>
<td>Cell 2</td>
<td>Cell 3</td>
<td>Cell 4</td>
<td>Cell 5</td>
<td>Cell 6</td>
</tr>
</table>
</BODY>
</HTML>