Website-Design + realization in css

Got a very simple website in html, php and css: [login to view URL] My own design that you can see here is not professional as I´m not a designer and not a programmer and I know little about CSS. I want you to make ONE DESIGN for the overall site - the content changes by includes. Header and Navigation are always the same. I organized it by <div>-Tags. You should be able to create a professional design AND to realize it in CSS. Please give examples of your work or - even better - send me your design of my page so I can select the final product. If I choose you, I´ll send you my website code so you can bring your CSS in. The project will be finished, when my site functions with your design. Your name will then be mentioned as designer on the site.