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userChrome.css and userContent.css still work just fine in Firefox (though you have to enable toolkit.legacyUserProfileCustomizations.stylesheets in about:confi
by mark_and_sweep 5y ago
userChrome.css and userContent.css still work just fine in Firefox (though you have to enable toolkit.legacyUserProfileCustomizations.stylesheets in about:config first). I'm using them to (re-)style both the Firefox UI as well as some specific sites.