I have tried and tried to figure this out. Can someone please tell me what is causing my shop to be aligned left? I would like it to be centered with some margins on each side.

I do want the text in the sideboxes and center content and so forth to be left-aligned. I just want the whole container to be centered on the page.

Site (work in progress) is here:

http://thewindcutter.com/shop

Thanks in advance for the help!
Rebekah