HTML | <frameset> cols Attribute

The HTML <frameset> cols Attribute is used to specify the size and the number of columns in a frameset. The width of each frame is separated by a comma. Note: It is not supported in HTML5.

Syntax:

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

Attribute Values:

pixels: The width of column is set in terms of pixels. Example: "50px" or "50".
%: The width of columns is set in terms of percentage. Example "70%".
*: The width of columns is set to all available space.

Example:

html

<!DOCTYPE html> 
<html>     
    <head> 
        <title>HTML frameset cols Attribute</title> 
    </head> 
        
    <frameset cols = "30%, 40%, 30%"> 
        <frame name = "top" src = "attr1.png" /> 
        <frame name = "main" src = "gradient3.png" /> 
        <frame name = "bottom" src = "col_last.png" />         
    </frameset> 
</html>

Output:

Supported Browsers: The browser supported by HTML <frameset> cols Attribute are listed below:

Google Chrome
Internet Explorer
Firefox
Safari
Opera

HTML | <frameset> cols Attribute

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