Looks like Mozilla is finally on the right track!
With this new release you can drop some of the -moz prefixes you were probably using for animations, transitions, transforms and gradients.
Check out the list of CSS3 properties which now works without the prefix:
animation, animation-name, animation-duration, animation-delay, animation-timing-function, animation-iteration-count, animation-direction, animation-play-state, animation-fill-mode, @keyframes
transition, transition-property, transition-delay, transition-duration, transition-timing-function
transform, transform-origin, transform-style, backface-visibility, perspective, perspective-origin
CSS3 Image Values
linear-gradient(), radial-gradient(), repeating-linear-gradient(), repeating-linear-gradient()
More information: https://hacks.mozilla.org/2012/07/aurora-16-is-out/