HTML : Applying styles to entire columns of table

<table width="100%"> <colgroup> <col style="width:40%;" /> <col style="width:60%;" /> </colgroup> <thead> <tr> <td> Column 1 <!--This column will have 40% width--> </td> <td> Column 2 <!--This column will have 60% width--> </td> </tr> </thead> <tbody> <tr> <td>Cell 1</td> <td>Cell 2</td> </tr> </tbody> </table> 

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.

Here you can see we have used <colgroup> tag which specifies a group of one or more columns in a table for formatting purpose. The <colgroup> tag is useful for applying styles to entire columns, instead of repeating the styles for each cell, for each row.

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