We can start to use CSS3 transitions right now as long as we carefully choose the situations in which to use them. They certainly won’t replace existing technologies like Flash, JavaScript, or SVG (especially without broader browser support)—but they can be used to push the experience layer a notch higher. And most importantly, they’re relatively easy to implement for the web designer already familiar with CSS. It only takes a few lines of code…
Direct link: Understanding CSS3 Transitions