CSS Issue on No Account Billing Page

[BlackOrchidCouture]

Hi all. I'm having a CSS issue which I can't figure out after much messing around with (I use Firefox's Web Developer Toolbar to see the CSS that is affecting the page). I have COWOA installed, and when I put a product in the cart and choose check out without account, the page it goes to isn't doing what I want (I've attached a screenshot). The Billing Address (float: left) and Contact Details (float: right) boxes are supposed to sit side by side with the continue button below, floating right. The right box sits low as if there is not enough space for it to float beside the left box, but as far as I can tell there is plenty of space. I've tried clear: both in different places, floating both boxes left, have looked for hidden right/left margins that might be affecting the widths, but cannot find the fix. To actually see this in action and explore my CSS, if you have the time and desire, you'd have to go to my site, add a product, and choose check out without an account.

http://www.blackorchidcouture.com

Thanks for any advice!!

[BlackOrchidCouture]

I'd attached the wrong screenshot, here's the right one...

[BlackOrchidCouture]

Nevermind, I fixed it by removing the class="centerColumn" from the tpl_no_account_default.php so there isn't a background box, and then having everything float: left.....