<!doctype html> <html> <head> <style type="text/css"> div { overflow: hidden; height: 100px; } table { table-layout: fixed; border: 1px solid #000; width: 100%; } td { border: 1px solid #000; } </style> </head> <body onload="document.getElementById('bug').style.width='200px';"> <div> <table> <tr> <td width="100" id="bug">Header1</td><td>Header2</td> </tr> <tr> <td>Cell1</td><td>Cell2</td> </tr> </table> </div> </body> </html>