When it comes to the still-in-progress CSS 3 spec, not only does browser support vary widely, but most browsers have \ ... Without the prefix, you'd have to deal with two different CSS rules, ...

The CSS 3 box-shadow property allows for drop shadows and other gradient-based effects without the need for images or other hacks. Box shadow works in Firefox 3+, Chrome, Safari, Opera and ...

W3C working groups are also developing CSS 3, though much of this work builds on CSS 2.1. Instead of releasing CSS 3.0 as a monolithic standard, the working group will issue individual modules ...