Wordpress post background

I made a custom Wordpress theme to match our company's website, but the post background is gray and I don't know how to fix it.

This is my homepage:
http://customwovenlabels.com/

This is the blog:
http://customwovenlabels.com/blog


I can't find anything in the CSS but I'm probably missing something obvious.


Also, the sidebar is hideous! How is that fixed?

It seems as though I figured it out.