CODE EXAMPLE FOR HTML

how to set table data width in css

<table>
  <tr>
    <th>header 1</th>
    <th>header 234567895678657</th>
  </tr>
  <tr>
    <td>data asdfasdfddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddasdfasdfasdf</td>
    <td>data 2</td>
  </tr>
</table>