HTML Reference Manual

HTML Tag Reference

HTML: <frameset> cols Attribute

The cols attribute specifies the size and number of columns in the <frameset>, and the width of each frame is defined in the cols attribute of the comma-separated list.

　HTML <frameset> tag

Online Example

A three-column frame:

Example

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>HTML <frameset> cols Attribute Usage-Basic Tutorial(oldtoolbag.com)</title>
</head>
<body>
<frameset cols="25,%*,25%">
　　<frame src="frame_a.htm">
　　<frame src="frame_b.htm">
　　<frame src="frame_c.htm">
</frameset>
</form>
</body>
</html>

Test it out ‹/›

Browser Compatibility

IEFirefoxOperaChromeSafari

All major browsers support the cols attribute.

Definition and Usage

HTML5 The <frameset> tag is not supported.

The cols attribute specifies the size and number of columns in <frameset>.

The width of each frame is specified in the cols attribute of the comma-separated list.

Note:Once the number of cols attribute values is specified, it defines the number of columns in <frameset>.

Syntax

<frameset cols="pixels|%|*">

Attribute Value

Value	Description
pixels	Specify the column size in pixels (for example "100px" or just "100").
%	Specify the column size as a percentage of available space (for example "50%").
*	The remaining available space will be allocated to the column.

HTML <frameset> tag

HTML: <template> tag