userChrome.css to hide the top tabs bar for Firefox with instructions. Useful when you have a side tabs extention or just want a cleaner look and feel.
Note: this will only hide the tabs bar at the top, not the URL navigation bar, or the window icons.
- Open Firefox and in the URL tab enter:
about:profiles
- Find the default profile for your machine. Under the row
Root Directory
, click the button to open the profiles folder directory. Now you should see all your profiles as folders - Open your default profile folder inside your root profile directory (called something like
e3w6q1zc.default-release
) - Find the
chrome
folder. If one doesn't exist, create one - Find the
userChrome.css
file. If one doesn't exist, create one - Make sure your
userChrome.css
file looks the same as theuserChrome.css
file in this repository - Save the
userChrome.css
file and close the file explorer
Next you have to add the permission for Firefox to utilise the userChrome.css
Stylesheet.
- Open Firefox and in the URL tab enter:
about:config
. ClickAccept the risk and continue
permission - Search for
toolkit.legacyUserProfileCustomizations.stylesheets
and make sure it's set totrue
- Completely close Firefox and start it again. Now the tabs bar at the top should be hidden