In HTML5, how can I specify a fixed width for a table cell? Most of the <col> properties which were available in HTML4 are no longer valid in HTML5. 
Just to be clear, I know I can do <td style="width:150px">, but this does not keep the column width fixed. No matter what the contents of the cell are, I want the width fixed at 150px.
 
     
     
     
    