using nth-last-child
by andrew rowe
HTML
<table>
<tr>
<th>H 1</th>
<th>H 2</th>
<th>H 3</th>
<th>H 4</th>
</tr>
<tr>
<td rowspan='3'>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
</tr>
<tr>
<td>2</td>
<td>3</td>
<td>4</td>
</tr>
<tr>
<td>2</td>
<td>3</td>
<td>4</td>
</tr>
</table>
CSS
table tr td:nth-last-child(-n+2) {
text-align: right;
background-color: red;
}