Hellow, im trying to hide some element in firefox using userChrome. In perticular on left the the “View recent browsing accross windows and devices” how could i do that? Or what is a good resource to know how to learn this myself?
Thank for your time and have a nice day!
You just have to set
toolkit.legacyUserProfileCustomizations.stylesheetsin about:config to true.Yes, that does say “legacy”, but I don’t think, Mozilla cares to actually remove it. They mainly introduced that about:config flag to reduce startup time for the 99.9% of users that don’t use a userChrome.css file…