New HTML and CSS Features in Safari 3.1
The new version of Safari (3.1) that was released today incorporates the latest HTML and CSS capabilities found in Webkit. While we previously featured the changes, they are worth repeating now that 3.1 is out.
CSS Animation - transitions, and animations allowing you to do CSS-based animations and Transforms. (example above from Surfin' Safari)
Downloadable Fonts - instead of having to rely on common fonts available to browsers, you can link to actual font files within your CSS. For example, this html page takes advantage of web fonts and will render differently depending on which version of Safari you are using (more examples and explanation):