Yadda is loosely based on a design I saw a while back by Eris, who specialises in blog designs. I was hoping OSWD would start allowing images to be linked in designs but until then this design looks rather plain. But don't fear, using the background-image tag in the style sheet areas like the header can be easily jazzed up.
This was also a bit of an experiment with css shadows, as you can probably tell. I first saw the technique in ALA but obviously couldn't use images for the shadows, so excuse the large chunk of code in the style sheet!
