I have installed the column layout and added a border to my products

.centerBoxContentsProducts
{
border: 1px solid #cccccc;
/**margin-right:10px;**/
}

However i then wanted to add a margin / cellspacing to have some space between columns, but when i add margins as above it wraps onto two lines.

Ive searched through loads of search strings and cant find anything to specifically address this. Can anyone help?

im using version 1.3.7.

thanks!!!