Center Post Title and Menu Bar

Please take a look at my blog: http://cuden.net/ First, at the main menu bar, I'd like to have the buttons (home, about, contact, etc) spread out and fill the awkward blank space at the right side. Second, please take a look at a post: http://cuden.net/tour-de-feast-restaurant/ I'd like the title, "Tour de feast" in this case, to be centered. This should apply to all post titles. Many thanks in advance. I appreciate your help!