Html table tagı nasıl yapılır

<table border="1" width="100%" style="text-align:center; font-size:30px;">
   <tr>
      <td colspan="3">0</td>
   </tr>
   <tr>
      <td colspan="2">1</td>
      <td rowspan="4">7</td>
   </tr>
   <tr>
      <td>2</td>
      <td rowspan="2">6</td>
   </tr>
   <tr>
      <td >3</td>
   </tr>
   <tr>
      <td colspan="2">4</td>
   </tr>
   <tr>
      <td colspan="3">5</td>
   </tr>
</table>