How to add HTML <colgroup> span Attribute

Set the background color of the first two columns using the <colgroup> span attribute:

Definition and Usage

The span attribute defines the number of columns a <colgroup> element should span.

Tip: To define different properties to a column within a <colgroup>, use the <col> tag within the <colgroup> tag.

Browser Support

Syntax

Attribute Values

Value	Description
number	Sets the number of columns a column group should span

index.html

Example: HTML

<!DOCTYPE html>
<html>
<head>
<style>
table, th, td {
  border: 1px solid black;
}
</style>
</head>
<body>

<h1>The colgroup span attribute</h1>

<table>
  <colgroup span="2" style="background:red"></colgroup>
  <tr>
    <th>ISBN</th>
    <th>Title</th>
    <th>Price</th>
  </tr>
  <tr>
    <td>3476896</td>
    <td>My first HTML</td>
    <td>$53</td>
  </tr>
  <tr>
    <td>5869207</td>
    <td>My first CSS</td>
    <td>$49</td>
  </tr>
</table>

</body>
</html>

Output should be:

Type:	html
Category:	Web Tutorial
Sub Category:	HTML Tag
Uploaded by:	Admin