Animate.css
SVG Gradient Background Maker
Handy
The ultimate CSS tools for web designers | CSSmatic
Gradient generator, border radius, noise and box shadow
CSS Ratiocinator - A tool that will automatically refactor your CSS
Optimse your CSS. A new take at an old issue.
Ultimate CSS Gradient Generator - ColorZilla.com
Useful to generate IE 6-98 and 9 gradients (filter or svg)
Creating Single Element iPhone using CSS3 | CSSDeck
On the amazing use of box-shadow
Home - Scalable and Modular Architecture for CSS
A brilliant and inspiring book. Not only useful, but fun to read too. Full of good tips and ideas. I love the approach.
CSS3 Responsive Slider / Carousel Using Radio Buttons
No JavaScript, but not very semantic
Vendor-prefixed CSS Property Overview « Peter Beverloo
Adactio: Journal—Sea change
Responsive design
10 tips for designing mobile websites | These Days Labs
Supersize that Background, Please!
Good use of background cover property and @media queries
Webkit CSS Properties
Safari for Desktop and iPhone properties listed in a table. A must have.
CSS Border Radius
Try out border radius and copy/paste css
CSS3 Please! The Cross-Browser CSS3 Rule Generator
You can edit the underlined values in this css file but don't worry about making sure the corresponding values match, that's all done automagically for you.
Transforms
Bulletproof @font-face syntax
Paul Irish's take on bullet proofing your @font-face definitions as IE needs an .eot font and the others browsers require .ttf or .otf
Proudly Announcing: Modernizr | FarukAt.eş
Modernizr is a small JavaScript toolkit that uses feature detection techniques to determine whether or not the current browser is capable of any of the following features from CSS3 and HTML5.