the width of the header is set to 1200px. the content will center based on the widest element in the page.
because the width of the header is set to be wider then the content, the center point for the content is set to the center of the header.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.