By default, you can get improved UI / UX, and you can easily make many UI customs.
- https://github.com/black7375/Firefox-UI-Fix/wiki/Installatio...
- https://github.com/black7375/Firefox-UI-Fix/wiki/Tutorial
- https://github.com/black7375/Firefox-UI-Fix/wiki/Compatibili...
- https://github.com/black7375/Firefox-UI-Fix/wiki/Options
- https://github.com/black7375/Firefox-UI-Fix/wiki/Tips
- https://github.com/black7375/Firefox-UI-Fix/wiki/Show-Off-Yo...