Due to the fact that it’s passed all the previous testing stages, many CSS3 Selectors have already been implemented in modern web browsers; Mozilla, Opera, Safari and IE7 all recognise at least a few of them.
We’re putting together a table of levels of CSS3 Selectors support in browsers; it’s still early and the testing is by no means exhaustive, but it should act as a good guide for those who want to start to implement CSS3 in their web pages.
Since i’ve started with my CSS3 preview pages, i’ve had the same question at least 10 times already: why do browsers prefix CSS3 features? It seems so weird, when both WebKit and Firefox have
border-radiusimplemented, you have to write two lines for it to work in both browsers.