Text Widget help

I have placed some HTML code in the top Widget on my site – https://www.alt-sw.com/bath

All the other widgets have a horizontal line under them but I can’t get the line to appear in the top widget.

Any ideas?

The code I am using in the top widget is:

<table>
  <tr>
    <td ><img src="https://www.alt-sw.com/bath/images/lottery_1.png"  /></td>
    <td ><table  border="0" >
      <tr>
        <td ><div align="center"><img src="https://www.alt-sw.com/bath/images/bsu_1.png"  /></div></td>
      </tr>
      <tr>
        <td ><img src="https://www.alt-sw.com/bath/images/relay_1.png"  /></td>
      </tr>
    </table></td>
  </tr>

</table>