Use Header Image as background to Site Title

I want to use the image: http://test2.franciscandiscernment.org/provinceheader as a background image to my site title and tagline (even primary menu to if I can). How can I do that? (I am using Catch Base Pro). My site is currently http://test2.franciscandiscernment.org. (I am hoping it will fill entire header space and be responsive to different platforms.)