index.html

<table class="comment">
   <tr>
       <td class="top-left"></td>
       <td class="top"></td>
       <td class="top-right"></td>
   </tr>
   <tr>
       <td class="left"></td>
       <td class="content">Ouah, c'est vraiment une excellente introduction au CSS3 !</td>
       <td class="right"></td>
   </tr>
   <tr>
       <td class="bottom-left"></td>
       <td class="bottom"></td>
       <td class="bottom-right"></td>
   </tr>
</table>