CSS Zen Garden
Most people in the design industry know about CSS Zen Garden. It’s a website designed to show the power of css design. There is a set amount of content which never changes, and web developers are invited to send in their own css files to style the website to their own design.
They have no physical access to the site, so they can’t change the content according to their design. Their design changes the content layout.
It’s a truly excellent site, showcasing some fantastic designing and css skills. Some of the submissions go for more fancy tricks rather than good design, but even those are decent.