Non-standard This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
The :-moz-handler-blocked
CSS pseudo-class is a Mozilla extension that matches elements that can't be displayed because their handlers have been blocked.
Note: This selector is mainly intended to be used by theme developers.
Syntax
:-moz-handler-blocked
Specifications
Not part of any standard.
See also
:-moz-handler-blocked by Mozilla Contributors is licensed under CC-BY-SA 2.5.