Bootstrap, from Twitter: Wow. This is a full CSS library of sorts for that web app you were going to build next. Great treatments for forms, too. Even supports IE7. Spotted via Daniel.
Prime numbers, semi-transparent PNGs, and organic randomness in tiled backgrounds: The Cicada Principle and Why It Matters to Web Designers. Wish I had an excuse to use this.
In which I realize I stopped learning new CSS tricks a few years ago: CSS: Innovative Techniques and Practical Solutions (via)
Good introduction by Dan Cederholm. Understanding CSS3 Transitions – A List Apart
A simple Web application helps you optimize your stylesheet — or revert to a readable format as necessary. ProCSSor – Advanced CSS Prettifier
Easy little CSS library to use when you want to include diagrams of keyboard commands on an HTML page. Like, “Then, press Cmd+Shift+S to Save As a .png” KEYS.css
Border tricks make triangles show up in interesting (and useful) places. Creating Triangles in CSS
Can you believe we used to use Flash for this? 21 Stylish CSS/jQuery Solutions To Beautify Your Web Designs @ SmashingApps
Jeff elaborates on this: ““It’s amazing what you can do in very little code when you apply object-oriented principles to CSS. Wish more front-end devs understood OOP.” On applying OOP concepts to CSS – JeffCroft.com
Doug Bowman provides the details on the new GMail buttons (boxy, but cute). Recreating the button | stopdesign