All properties of CSS Animations, Transitions and Transforms are now available without the
-moz- vendor prefix. The
@keyframes rule, the
calc function and gradient functions have also been unprefixed. Gradients require a special attention because the syntax varies with and without the prefix.
Whenever you use a prefixed property or function, make sure you have the unprefixed one as well for forward compatibility. Stylesheets lacking in such consideration could become unapplied in the future.