Amazing use of CSS
30 Sep 2004 
around evening time 
Matt Winckler
CSS Zen Garden is a remarkable demonstration of what CSS are capable of. The structural markup behind the page remains the same, but you can select different CSS files to dramatically change the presentational layout of the page.
Then, you can view the plain HTML and realize how utterly simple the page really is underneath all the presentation. It’s amazing.
Another good resource for amazing CSS tricks is A List Apart. They do things with CSS you (well, I) would never have dreamed possible.