If you use this code and remove the backround it will at least show a box around them.

border: 1px solid #AFC2C7;
font-size: 9pt;
font-weight: bold;
color: #357082;
background: #FFFFFF url('http://www.sugarglider.net/ubbthreads/styles/images/ubbthreads/header_grad.gif');
padding-left: 2px;
padding-right: 2px;