A column group that specifies that the two columns should have a predefined width of 100 pixels:

Edit code and click me	Your Result (Some examples do not work in Google Chrome):
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> </head> <body> <table border="1" width="100%"> <colgroup span="2" width="100" /> <tr> <th>Month</th> <th>Savings</th> </tr> <tr> <td>January</td> <td>$100</td> </tr> <tr> <td>February</td> <td>$80</td> </tr> </table> </body> </html>
Edit the code above and click to see the result	www.xhtml.co.il - Try it yourself