Deprecated since Gecko 24 (Firefox 24 / Thunderbird 24 / SeaMonkey 2.21)
This feature has been removed from the Web. Though some browsers may still support it, it is in the process of being dropped. Do not use it in old or new projects. Pages or Web apps using it may break at any time.
cursor value was a Mozilla CSS Extension. It has been standardized in the CSS3 UI spec, thus unprefixed in Firefox 24 as of Gecko 24.0. From now on, use the unprefixed
zoom-out value instead.