How do I add a border that wraps center and side columns?

I need to add a border around the main content area. This border should wrap both the main and side columns.

The style "bodyrow" seems to be the one controlling the area I want to modify, but when I add a border through CSS to #bodyrow or tr#bodyrow nothing happens.

The strange thing is that I do see results if I add a background color or font styles to "bodyrow", but NOT if I add a border. So it seems that I am targeting the right class, but the border gets over-ridden by something else?

Running WordPress 3.0.5 and both Atahualpa 3.5.3 and 3.6.4

Thanks!