CSS - wow.
I have always promoted designing websites using CSS due to the many advantages (over its disadvantages) that many of us already know.
Now there’s something that amazes me very much as I had never before thought of how CSS could be utilised to do something like this maze.
Wow.
And do the CSS some justice, don’t visit the page using MSIE even though some of the CSSes there are well-supported and made with IE in mind. But don’t, please. Use Firefox!