-
about:config
- Set:
toolkit.legacyUserProfileCustomizations.stylesheets
true
-
go to
about:profiles
- Create a folder
chrome
inRoot
location pointed by active profile (ex.default-esr
,default
)- Create
chrome/userChrome.css
file
- Create
- Create a folder
Removing Tabs (can use Sidebery)
paste into userChrome.css
(if this doesn't work, rename to userContent.css
)
#tabbrowser-tabs { visibility: collapse !important; }
#TabsToolbar-customization-target { visibility: collapse !important; }
(restart firefox)