p:hover { background-color : lime }
a:hover { background-color : lime }

tr:hover { background-color : green }
td:hover { background-color : lime }

table { border-spacing: 5px; }

<p>The background color of this paragraph should turn to green when
   the mouse pointer hovers either its text (<strong>here</strong>) or its whitespace background, <strong>here</strong>:</p>
<address>The background color of <a href="#foo">this anchor (<strong>here</strong>)</a> should turn to green when the pointing device hovers over it.</address>
<table>
 <tbody>
  <tr>
   <td>The cells in</td>
   <td>this table</td>
   <td>should go</td>
  </tr>
  <tr>
   <td>green when</td>
   <td>you hover</td>
   <td>the pointing</td>
  </tr>
  <tr>
   <td>device over</td>
   <td>them (<strong>here</strong>).</td>
   <td></td>
  </tr>
  <tr>
   <td>The rows in</td>
   <td>this table</td>
   <td>should go</td>
  </tr>
  <tr>
   <td>dark green</td>
   <td>when the</td>
   <td>pointing device</td>
  </tr>
  <tr>
   <td>is over the</td>
   <td>cells <strong>there</strong>:</td>
   <td></td> <!-- remove this cell to make an evil test; row should still go green, but cell should not -->
  </tr>
  <tr>
   <td>And <strong>here</strong>:</td>
   <td></td>
   <td>(blank cells).</td>
  </tr>
 </tbody>
</table>