Shopping cart centered in page

I am currently integrating the ZenCart into an website I designed years ago for my mother-in-law. The current design of the main website is left justified, but the ZenCart is always centered.

My question is, can I change the ZenCart to be left justified like my current website, or even better how do I change my website to be centered on the page.

Main site - https://www.framefemmes.com
ZenCart - https://www.framefemmes.com/zencart

Thanks in advance for any input you have. :D

Zen Cart uses margin auto to center in the Body call of the css. You can remove that from Zen or add it to the existing site.

Thanks. I was able to change it to be left justified. I tried adding the margin:auto to the old site, but it did not have an effect. I could be related to the frames I am using.

yep.
Also, Zen and search engines don't play well in frames.