
Always Visible Scrollbar in Firefox
Add the following to the userContent.css file located in your profile path. (Profile path by OS listed below)
:root {
overflow-y: scroll !important;
}
html {
overflow-y: auto !important;
}
Then restart your browser!
Profile path by OS.
([Profile Name] is a random string of 8 letters, a dot (.) and then some more letters)
------------------------------------------------------
Windows 95 (without Desktop Update)
C:\Windows\Mozilla\Firefox\[Profile Name]\chrome
Windows 95 (with Desktop Update)/98/Me
C:\Windows\Application Data\Mozilla\Firefox\[Profile Name]\chrome
C:\Windows\Profiles\[Windows User Name]\Application Data\Mozilla\Firefox\[Profile Name]\chrome
Windows NT 4.x
C:\Winnt\Profiles\[Windows User Name]\Application Data\Mozilla\Firefox\[Profile Name]\chrome
Windows 2000 and XP
C:\Documents and Settings\[Windows User Name]\Application Data\Mozilla\Firefox\[Profile Name]\chrome
Windows Vista
C:\Users\[Windows User Name]\AppData\Roaming\Mozilla\Firefox\[Profile Name]\chrome
Unix
~/.mozilla/firefox/[Profile Name]/chrome
Mac OS X
~/Library/Mozilla/Firefox/[Profile Name]/chrome
~/Library/Application Support/Firefox/[Profile Name]/chrome
