@Darryl, the header image won't display as 100% in browsers. How to rectify that? And I want a logo size of 150px width x 41px height. What I will do to change this?
From looking at the education site you have listed in the Forum in the theme section; I am wondering if that header image has white edges that need to be cropped around the image. I think it is displaying at 100% width, but if there is blank space on the left, and right of the image, that is why the visual part won't stretch across the screen.