I'm working on a version of Twenty Eleven and I have it set up to be one column, no sidebar in my settings. And it works but all pages and posts and archives are one column. My issue? I want the pages to be one column but not the posts or category archives. Is there a way I can do that? My big issue is they all use the same HTML div set up of main-->primary (or secondary)-->content so when I had the preferences set for two columns, I knocked out get_sidebar for my pages and styled content appropriately but on posts the primary div overlapped the secondary sidebar div. Which obviously, looks awful.