Add "table" to postbit items..

[Opserty]

Just do it with a div and a class.

E.g.

<div class="info"><!-- Stuff inside the box --></div>

And the CSS would be something like:

.info { 
    border:1px solid #DDDDDD;
    background-color:#FFFFFF;
    padding:2px 5px;
    width:auto;
    margin:2px 5px;
}