My add to cart button is overlapping the "Customers who purchased this also purchased this" box.

You can see it here:
http://www.crochetgarden.com/shop/in...roducts_id=225

It is only problematic on the pages where the "customers who purchased this also purchased this" box shows up.

One thing that I had changed was in the tplheader.php file, I removed the br clear both tag because I was having issues with my header. I changed my header to be 100px in the stylesheet, and then took out the br clear both tag out of the tplheader so that my logo would appear spanning the entire width of the screen.. I am not sure if that had any affect on this or not...