Side box and center are overlapping

[romijade]

I was just wondering if anyone could please tell me how to fix this problem where the center boxes are overlapping the left side ones.

www.romijade.com/zencart

I've added a background image with the flowers on the side, then I gave the left side boxes a margin, thinking the center box (or whatever it is called) would automatically line up (which it obviously didn't). I'm not sure what section I have to edit to make the center area line up.

Thanks heaps.

~Romi

[romijade]

Nevermind, I managed to get it fixed, now I'm just stuck trying to get the background image to always line up when the browser is resized.