text-decoration property is now compatible with CSS3 Text Decoration Module Level 3, and the following properties defined in the spec are now unprefixed:
text-decoration has become a shorthand property but will behave as before like CSS 2.1 as if both
text-decoration-style are the initial values. The prefixed
-moz-text-decoration-* properties are still supported, but will be removed in a few releases.
Update: Those prefixed properties have been removed with Firefox 40.