Need help with resetting camera

HI, not sure this is the right place to post this but seeing as it's a problem with my ui i think it's right

anyway my problem is i ended up changing my camera pitch and would like to know how to reset it to default if you want to know how to change it, if you hold Ctrl+ up or down it moves it up or down so now my game is like this.

http://i.imgur.com/XbsKTIf.jpg

With my action bar on top of my player no matter where i move my camera.
I just need to know how to reset it.