Exemple de code de la propriété CSS empty-cells.

<style>
.exemple-empty-cells-show{ empty-cells : show }
.exemple-empty-cells-hide{ empty-cells : hide }
.exemple-visibility-hidden { visibility : hidden }
.exemple-display-none td{ display : none }
.exemple { margin-bottom : 10px; }
.exemple td{ background-color:#ccc; width:100px; }
</style>
<table border="1" cellspacing="2" cellpadding="0" class="exemple">
  <tr>
    <th colspan="5">sans empty-cells</th>
  </tr>
  <tr class="exemple-display-none">
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
  </tr>
  <tr>
    <td>cellule non vide</td>
    <td>cellule non vide</td>
    <td> </td>
    <td> </td>
    <td></td>
  </tr>
  <tr>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
  </tr>
</table>
<table border="1" cellspacing="2" cellpadding="0" class="exemple exemple-empty-cells-show">
  <tr>
    <th colspan="5">empty-cells : show</th>
  </tr>
  <tr class="exemple-display-none">
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
  </tr>
  <tr>
    <td>cellule non vide</td>
    <td class="exemple-visibility-hidden">cellule non vide</td>
    <td> </td>
    <td> </td>
    <td></td>
  </tr>
</table>
<table border="1" cellspacing="2" cellpadding="0" class="exemple exemple-empty-cells-hide">
  <tr>
    <th colspan="5">empty-cells : hide</th>
  </tr>
  <tr class="exemple-display-none">
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
  </tr>
  <tr>
    <td>cellule non vide</td>
     <td class="exemple-visibility-hidden">cellule non vide</td>
    <td> </td>
    <td> </td>
    <td></td>
  </tr>
  <tr>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
  </tr>
</table>
<table border="1" cellspacing="2" cellpadding="0" class="exemple exemple-empty-cells-hide">
  <tr>
    <th colspan="5">empty-cells : hide et show</th>
  </tr>
  <tr class="exemple-display-none">
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
  </tr>
  <tr>
    <td>cellule non vide</td>
    <td class="exemple-visibility-hidden">cellule non vide</td>
    <td> </td>
    <td> </td>
    <td class="exemple-empty-cells-show"></td>
  </tr>
  <tr>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
    <td></td>
  </tr>
</table>