For those who have not seen my Edge of the Web CSS3 demonstration I used the CSS Zen Garden HTML. Why, because I wanted to use somebody else’s HTML, mainly because I wanted to show it works with any HTML and that most people would be familiar with the site.
I will not submit it, because Dave has not accepted any new submissions almost two year, my demo is far from the visual standard of most other design and I broke one major rule the CSS does not validate.
There are no hacks in the CSS just lots of browsers specific declarations like:
-moz-box-shadow: 5px 5px 7px rgba(0,0,0,0.66);
And even worse Microsoft specific declarations, which break the W3C rules for CSS
filter: progid:DXImageTransform.Microsoft.dropshadow(OffX=5, OffY=5, Color='#AA666666', Positive='true');
As I said in my presentation, the important thing to know about validation, is why your code does not validate, if you know that, then validation is irrelevant.