>>3637603On Windows go to this:
C:\Users\username\AppData\Roaming\Mozilla\Firefox\Profiles\<profile folder>\chrome\userChrome.css
the profile folder should be called something like (bunch of letters).default
if the chrome folder or userChrome.css don't exist then make them
then put this in that file:
#TabsToolbar {
visibility: collapse !important;
}
#sidebar-box[sidebarcommand="treestyletab_piro_sakura_ne_jp-sidebar-action"] #sidebar-header {
display: none;
}
