Styling in Category.php file

I am creating a custom theme and I have an issue with the styling of the category.php page. I have my entire site center aligned and it all looks fine; however, pages generated from the category.php page are left aligned for some reason. Here is the link to the site: Here . If you click the ‘media’ or ‘wurdz’ links, you’ll see the category.php styling. I actually copy and pasted most of the code from other sections of the site, so I’m not sure what the problem could be. Let me know if you need to see certain sections of code and I’ll add them. Thanks in advance for any help!