HTML <colgroup> widthAttribute
Examples
A <colgroup> element that specifies a predefined width of 200 pixels for the first column:
<table border="1">
<colgroup width="200">
<tr>
<th>Month</th>
<th>Savings</th>
</tr>
<tr>
<td>January</td>
<td>$100</td>
</tr>
<tr>
<td>February</td>
<td>$80</td>
</tr>
</table>
<colgroup width="200">
<tr>
<th>Month</th>
<th>Savings</th>
</tr>
<tr>
<td>January</td>
<td>$100</td>
</tr>
<tr>
<td>February</td>
<td>$80</td>
</tr>
</table>
Try it Yourself »
Browser Support
All major browsers support the width attribute. However, no browser supportsrelative_lengthvalue.
Definition and Usage
In HTML5, the <colgroup> width attribute is not supported.
The width attribute specifies the width of a column group.
Usually, the space occupied by a column group is the space needed to display its content. The width attribute is used to set a predefined width for the column group.
Note:This attribute is overridden by any width setting in a <col> element.
Syntax
<colgroup width="pixels|%|relative_lngth">
Attribute Values
| Value | Description |
|---|---|
| pixels | Sets the width value in pixels (example: width="50"). |
| % | Sets the width value as a percentage of the enclosing element (example: width="50%"). |
| relative_length | Distributes available pixels among the parts. Part one is set to "1*", part two is set to "2*". (For example, if the table width is 100px, the first column group is 20px, the second column group is 50%, then the remaining available pixels are 30px.) Example: If the available pixels are 30px, you can set part one to "1*" and part two to "2*", which will be interpreted as 10 and 20 pixels ("1*" for part one, "2*" for part two). |
HTML <colgroup> Tag Other Extensions