|  | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> | 
|  | <html xmlns="http://www.w3.org/1999/xhtml"> | 
|  | <head> | 
|  | <title>CSS Test: Background on a column group element shows if all elements above its layer are transparent</title> | 
|  | <link rel="author" title="Microsoft" href="http://www.microsoft.com/" /> | 
|  | <link rel="help" href="http://www.w3.org/TR/CSS21/tables.html#table-layers" /> | 
|  | <meta name="assert" content="A background set on a column group element will show if all table element layers above it are transparent." /> | 
|  | <style type="text/css"> | 
|  | table | 
|  | { | 
|  | background: red; | 
|  | border-collapse: collapse; | 
|  | } | 
|  | colgroup | 
|  | { | 
|  | background: green; | 
|  | } | 
|  | td | 
|  | { | 
|  | height: 2em; | 
|  | width: 2em; | 
|  | } | 
|  | </style> | 
|  | </head> | 
|  | <body> | 
|  | <p>Test passes if there is no red visible on the page.</p> | 
|  | <table> | 
|  | <colgroup> | 
|  | <col /> | 
|  | <col /> | 
|  | <col /> | 
|  | </colgroup> | 
|  | <tbody> | 
|  | <tr> | 
|  | <td></td> | 
|  | <td></td> | 
|  | <td></td> | 
|  | </tr> | 
|  | <tr> | 
|  | <td></td> | 
|  | <td></td> | 
|  | <td></td> | 
|  | </tr> | 
|  | <tr> | 
|  | <td></td> | 
|  | <td></td> | 
|  | <td></td> | 
|  | </tr> | 
|  | </tbody> | 
|  | </table> | 
|  | </body> | 
|  | </html> |