HTML <colgroup> Tag

Description

The <colgroup> HTML element is intended to specify the width and style of one or more columns of the table. This element allows you to reduce the code of the table by reducing duplicate attributes, and if it is available, the browser starts showing the contents of the table, without waiting for it to fully load. The <colgroup> element can be used in combination with <col> , which defines the characteristics of one or more columns.
Usually, a closing tag is not required, but if the <colgroup> acts as a container for the <col> elements, then the </colgroup> tag should be added at the end of the group.

Properties

Permitted Parents: A <table> element. The <colgroup> must appear after any optional <caption> element but before any <thead>, <th>, <tbody>, <tfoot> and <tr> element.
Content: 0 or more <col> elements
Start/End Tags: Start tag: required, End tag: required

Example

HTML

<table width="100%" border="1">

  <colgroup span="2" align="left"></colgroup>

  <colgroup align="right" style="color: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>

</table>

Result

Attributes

Attribute	Definition
span	Specifies how many columns to span.
width	Width of the column.
align	Specifies the alignment of the content related to a col element.
valign	Specifies the vertical alignment of the content related to a col element.
char	Specifies the alignment of the content related to a col element to a character.
charoff	Specifies the number of characters the content will be aligned from the character specified by the char attribute.