.red { background-color : red }
.t1 td:not(:last-child) { background-color : lime }
p > *:not(:last-child) { background-color : lime }
table.t1 td { border : thin black solid }

<div align="center">
<table class="t1" border="1">
  <tr>
    <td class="red">green cell</td>
    <td class="red">green cell</td>
    <td>1.3</td>
  </tr>
  <tr>
    <td class="red">green cell</td>
    <td class="red">green cell</td>
    <td>2.3</td>
  </tr>
  <tr>
    <td class="red">green cell</td>
    <td class="red">green cell</td>
    <td>3.3</td>
  </tr>
</table>
</div>
<p>
<span>This paragraph should NOT AT ALL</span>
     have a green background</p>