usando nth-child en tablas tr td

<table>
  <tr>
    <th>&nbsp;</th>
    <td>
<table>
  <tr>
    <th>&nbsp;</th>
    <td>$</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <th>&nbsp;</th>
    <td>$</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <th>&nbsp;</th>
    <td>$</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <th>&nbsp;</th>
    <td>$</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <th>&nbsp;</th>
    <td>$</td>
    <td>&nbsp;</td>
  </tr>
</table>
lt;/td> <td>&nbsp;</td> </tr> <tr> <th>&nbsp;</th> <td>
<table>
  <tr>
    <th>&nbsp;</th>
    <td>$</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <th>&nbsp;</th>
    <td>$</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <th>&nbsp;</th>
    <td>$</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <th>&nbsp;</th>
    <td>$</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <th>&nbsp;</th>
    <td>$</td>
    <td>&nbsp;</td>
  </tr>
</table>
lt;/td> <td>&nbsp;</td> </tr> <tr> <th>&nbsp;</th> <td>
<table>
  <tr>
    <th>&nbsp;</th>
    <td>$</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <th>&nbsp;</th>
    <td>$</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <th>&nbsp;</th>
    <td>$</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <th>&nbsp;</th>
    <td>$</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <th>&nbsp;</th>
    <td>$</td>
    <td>&nbsp;</td>
  </tr>
</table>
lt;/td> <td>&nbsp;</td> </tr> <tr> <th>&nbsp;</th> <td>
<table>
  <tr>
    <th>&nbsp;</th>
    <td>$</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <th>&nbsp;</th>
    <td>$</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <th>&nbsp;</th>
    <td>$</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <th>&nbsp;</th>
    <td>$</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <th>&nbsp;</th>
    <td>$</td>
    <td>&nbsp;</td>
  </tr>
</table>
lt;/td> <td>&nbsp;</td> </tr> <tr> <th>&nbsp;</th> <td>
<table>
  <tr>
    <th>&nbsp;</th>
    <td>$</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <th>&nbsp;</th>
    <td>$</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <th>&nbsp;</th>
    <td>$</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <th>&nbsp;</th>
    <td>$</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <th>&nbsp;</th>
    <td>$</td>
    <td>&nbsp;</td>
  </tr>
</table>
lt;/td> <td>&nbsp;</td> </tr> </table>

Aquí está mi código, quiero<td>s con "$1$quot; con un fondo de#CCC en todo el<tr>s.

¿Puede alguien ayudarme a hacer esto usandonth-child, seudo clases?

Respuestas a la pregunta(2)

Su respuesta a la pregunta