HTML colgroup tag

Example

Set the background color of the three columns with the <colgroup> and <col> tags:

<table>
<colgroup>
<col span="2" style="background-color:red">
<col style="background-color:yellow">
</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>

ISBN	Title	Price
3476896	My first HTML	$53

Definition and Usage

The <colgroup> tag specifies a group of one or more columns in a table for formatting.

The <colgroup> tag is useful for applying styles to entire columns, instead of repeating the styles for each cell, for each row.

Note: The <colgroup> tag must be a child of a <table> element, after any <caption> elements and before any <thead>, <tbody>, <tfoot>, and <tr> elements.

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

Attributes

Attribute	Value	Description
span	number	Specifies the number of columns a column group should span

Global Attributes

The <colgroup> tag also supports the Global Attributes in HTML.

Event Attributes

The <colgroup> tag also supports the Event Attributes in HTML.

More Examples

Example

Align text in table columns (with CSS):

<table style="width:100%">
<tr>
<th>ISBN</th>
<th>Title</th>
<th>Price</th>
</tr>
<tr>
<td>3476896</td>
<td>My first HTML</td>
<td style="text-align:right">$53</td>
</tr>
<tr>
<td>2489604</td>
<td>My first CSS</td>
<td style="text-align:right">$47</td>
</tr>
</table>

Example

Vertical-align text in table columns (with CSS):

<table style="height:200px">
<tr>
<th>Month</th>
<th style="vertical-align:bottom">Savings</th>
</tr>
<tr>
<td>January</td>
<td style="vertical-align:bottom">$100</td>
</tr>
</table>

Example

Specify width of a table column (with CSS):

<table>
<tr>
<th style="width:200px">Month</th>
<th>Savings</th>
</tr>
<tr>
<td>January</td>
<td>$100</td>
</tr>
<tr>
<td>February</td>
<td>$80</td>
</tr>
</table>

Default CSS Settings

Most browsers will display the <colgroup> element with the following default values:

Example

colgroup {
display: table-column-group;
}