I can see the difference, it now looks just like the way I did it in the image. Did you get it working? Or does your site not look like the image I have above? If it doesn’t, try hitting your reload button so it will clear your browser cache and display the latest changes you made to the css.
From my end everything looks fine, and the code I added above that you added seems to have fixed it. Your text and nav reach all the way to the very end (1140px wide). If I’m confused and you’re talking about something different than what I’m looking at just let me know.
Here is what I’m seeing – http://i.imgur.com/MvvAYJv.png