How to create central HTML column style

[Howits]

I'm sort of wondering how a CSS template can be created so that all content goes in a fixed area in the center of the page (900px wide), with two flexible columns either side using the same image (so basically one image all the way across with the central column going over the middle part), although I want the image to not repeat, using just a pale blue underneath it. I'd also quite like a header spanning the entire width of the page (red) which contains text and a logo that can appear the same on every page, and the same at the bottom (except for the color, which I want to be darkish gray). I'd quite like somebody to give me some CSS code for this, as all the pre-made templates websites offer is too fancy for what I like.