Ofc you can lol
Try
<html> <title>Community Board</title>
<body>
<center><table>
<tr>
<td><table width="120" bgcolor=3293F3><tr><td height=5></td></tr><tr><td>GM Shop</tr></td></table></td>
<td><table width="120" bgcolor=3293F3><tr><td height=5></td></tr><tr><td>Gatekeeper</tr></td></table></td>
</tr>
</table></center>
</body></html>
I think thats what you are trying to do?Inside the table you was missing the <tr><td> tags
Also ive added one more line using the height function to give height to the table (color)