PUBLIC MARKS from decembre with tag userChrome

Custom Scrollbars for Firefox 57+ : Method 1 - files for Firefox profile folder only M1 is based on this project by nuchi: https://github.com/nuchi/firefox-quantum-userchromejs M1 will stop working when Mozilla drops XBL support. From this projects method 1 : folder copy userChrome folder and userChrome.css file to PROFILENAME chrome or add code from userChrome.css file to an existing userChrome.css file. Method 2 - files for Firefox folder and to Firefox profile folder M2 is based on this project by ardiman: https://github.com/ardiman/userChrome.js From this projects method 2profile folder copy userChrome folder and userChrome.js file to PROFILENAME chrome . From this projects method 2firefox folder copy defaults folder and config.js file to Firefox main directory (where the Firefox executable is). Script/startup cache must be deleted after every change! Where to fine startupCache folder? about:profiles > Local Directory > Open Folder, close Firefox and delete all files in startupCache folder. Location on WINDOWS: C:Users NAME AppDataLocalMozillaFirefoxProfiles PROFILE startupCache Location on LINUX location: home NAME .cachemozillafirefox PROFILE startupCache This is not the same profile folder custom scripts and styles are stored! More info about startup cache removal (in German): https://github.com/ardiman/userChrome.js/wiki/Skriptcache More info about startup cache removal (in English )