Chrome appears to support span attribute for <col> #42545
Description
MDN URL
https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/col
What specific section or headline is this issue about?
Browser compatibility
What information was incorrect, unhelpful, or incomplete?
It appears Chrome (v 142.0.xxxx.xxx) supports the span attribute for <col>, while it is listed as unsupported.
Using a test page (see below HTML and screenshot) I can see background color applied to <col> with a span of 3.
HTML
<!DOCTYPE html>
<html lang="us-US">
<head>
<meta charset='UTF-8'>
<style>
table {
border: 2px solid red;
}
th {
background-color: rgb(190, 190, 190);
}
th,
td {
border: 1px solid black;
width: 50px;
text-align: center;
}
</style>
</head>
<body>
<table>
<colgroup style="background-color: lightgoldenrodyellow"></colgroup>
<colgroup style="background-color: lightcyan;" span="2"></colgroup>
<colgroup>
<col style="background-color: lightcoral" />
<col span="3" style="background-color: lightgreen;" />
<col style="background-color: lightsalmon;" />
<col style="background-color: lightseagreen;" />
</colgroup>
<tr>
<th>1</th>
<th>2</th>
<th>3</th>
<th>4</th>
<th>5</th>
<th>6</th>
<th>7</th>
<th>8</th>
<th>9</th>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td>6</td>
<td>7</td>
<td>8</td>
<td>9</td>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td>6</td>
<td>7</td>
<td>8</td>
<td>9</td>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td>6</td>
<td>7</td>
<td>8</td>
<td>9</td>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td>6</td>
<td>7</td>
<td>8</td>
<td>9</td>
</tr>
</table>
</body>
</html>Chrome screenshot
What did you expect to see?
Accurate representation of support of span attribute for Chrome
Do you have any supporting links, references, or citations?
No.
Do you have anything more you want to share?
No response
MDN metadata
Page report details
- Folder:
en-us/web/html/reference/elements/col - MDN URL: https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/col
- GitHub URL: https://github.com/mdn/content/blob/main/files/en-us/web/html/reference/elements/col/index.md
- Last commit: 7c28cd2
- Document last modified: 2025-12-17T14:40:43.000Z