Not sure what I did, if anything, but suddenty guests on my forum, when viewing a thread, lose the header entirely. The header actually appears at the bottom of the forum! Here, I'll show you. Click here, and the header appears just fine: http://poetrycircle.com/forum/ But click within a thread, and the header disappears. Scroll to the bottom, though, and you'll see it at the bottom of the site! http://poetrycircle.com/forum/threads/photograph.184/ Any ideas what's causing this? The only thing I did today, of substance, was create a child style from the main style so that I could make the child style responsive and the main one not. Thanks. Oh, and when you're logged in, this issue doesn't happen.