The HTML <Colgroup> Tag associate degree specifies the cluster of columns within the HTML table. It uses one’s parent instrumentality or multiple <col> gap components to use completely different properties in an associate degree HTML table.
Note:- The <Colgroup> Tag should be used after the <caption> with the <table> part and before the <thead> or <tbody> elements.
Example:-
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>
HTML colgroup tag
</title>
</head>
<body>
<h1>This is HTML colgroup Tag Example</h1>
<table border="1">
<colgroup>
<col span="2" style="background-color:red;">
<col span="1" style="background-color:yellow;">
</colgroup>
<tr>
<th>Roll No.</th>
<th>Name</th>
<th>Grade</th>
</tr>
<tr>
<td>3476896</td>
<td>Khushal</td>
<td>A+</td>
</tr>
</table>
</body>
</html>Output:-
