Firefox 3.1, which is now in alpha, joins Webkit/Safari in supporting the CSS3 border-image, text-shadow, and box-shadow properties. As those who’ve used border-image on iPhone-specific sites know, it can make creating beautiful buttons and boxes a lot less messy than existing techniques. text-shadow and box-shadow are more practical to use soon, since if your IE7 users don’t see that kind of extra polish, it might not be a big deal, yet you can keep your site resources and images simpler. After many years of wishful thinking, CSS3 is finally coming true.
Firefox 3.1 adds border-image
This post is over ten years old. Chances are, I've learned enough to have advanced my thinking about some of this stuff.