FirefoxCSS+ is based on h4wwk3ye release (https://github.com/h4wwk3ye/firefoxCSS), MaterialFox (https://github.com/muckSponge/MaterialFox) and FlyingFox (https://github.com/akshat46/FlyingFox).
INSTALLATION:
- Install the "TreeStyleTab" addon from the Mozilla Addons Store
- Go to the addon's preferences and scroll until you find "Advanced settings", then import the .json file.
- Go to the bottom of the section (under "Extra style rules...") and import the treestyletab.css file
- Go to "about:profiles" and scroll to your desired profile (either the one you use or one you want to make)
- Open the root directory folder of the profile
- Copy the chrome folder you downloaded and insert the user.js file