I was trying to add some effects for visited links, then I got this problem.
Here is the code: http://dabblet.com/gist/5447894
Only Opera can successfully change the content of :before
pseudo-elements. All other browsers are fail. Did I miss anything? Thanks
The allowed (= not ignored) CSS properties of visited links are color
, background-color
, border-*-color
, outline-color
and, column-rule-color
(more under certain circumstances).
This is to prevent history stealing attacks. See this article for further details.
So you can, technically, set a :before
pseudo class for :visited
links, but it will be ignored and appears as if the links are not visited. This is not a bug, it's a feature ;)