La pseudo-classe :nth-last-child()

Code CSS

Dans l'exemple, les 2 dernières lignes sont en rouge.

table   { border: 1px double #000; }
td      { border: 1px solid black ; }
tr:nth-last-child(-n+2) { background-color:red; }

Code html

<table>
        <tr> <td>Lundi</td> 	<td>639</td>  </tr>
        <tr> <td>Mardi</td> 	<td>596</td>  </tr>
        <tr> <td>Mercredi</td> 	<td>1135</td> </tr>
        <tr> <td>Jeudi</td> 	<td>1002</td> </tr>
        <tr> <td>Vendredi</td> 	<td>908</td>  </tr>
        <tr> <td>Samedi</td>	<td>371</td>  </tr>
        <tr> <td>Dimanche</td> 	<td>272</td>  </tr>
</table>