Centering Products on page
 

I need a little help with my 4.2.2 setup. I was able to make it display 4 products wide on each page but my fourth product is under the right menu on smaller screens.
How can I fix this in the CSS? What code do I put and where?
You can see the problem at http://www.all-things-tiffany.com/store422/home.php?cat=2

Thanks in advance for the help.

Re: Centering Products on page
 

Any help here would be appreciated!!