How do I make the text in the header of my table not bold?

Question

I need to use a rowspan for my table, therefore I (believe) I must use a table header. However, using a table header makes my font bold, which is unwanted. For this HTML, how would I make sure the font in my table header isn't bold? Or, if it's possible, how can I use rowspan without using a table header?

<table border="1">
  <tr>
    <th rowspan="2">Telephone:</th>
<td>555 77 854</td>
  </tr>
  <tr>
    <td>555 77 855</td>
  </tr>
</table>

Answer 1

Simply overhide the font-weight of the th element in CSS :

th{
    font-weight: normal;
}

JSBin : http://jsbin.com/lizakatuwe/1/