Custom Firefox user chrome CSS.
Declarations
Type
strings concatenated with "\n"Default
""Example
''
/* Hide tab bar in FF Quantum */
@-moz-document url("chrome://browser/content/browser.xul") {
#TabsToolbar {
visibility: collapse !important;
margin-bottom: 21px !important;
}
#sidebar-box[sidebarcommand="treestyletab_piro_sakura_ne_jp-sidebar-action"] #sidebar-header {
visibility: collapse !important;
}
}
''