Few things to change Help

Hello, my first problem is this in the picture.
http://prntscr.com/fg6z3d
How can i remove it? It floats all over.
The other thing is, how can i change my primary menu text like this in WPCartoons.
I want this menu - http://prntscr.com/fg6zvs
And i have this in my Animepress - http://prntscr.com/fg704i
Thanks!

The other thing is, made changes doesn't apply. Not matter if i'm doing them from admin panel of wordpress or my server panel. Dunno what is the reason? I've done some changes in style.css, none has apply.

Hi!

Unfortunately, we don't provide any services for editing themes for individual users. As for that floating background - I'm not sure. I can't find this problem on the theme demo. Could you provide the URL of your website, please.