Ciao, sì per fortuna c'è già e funziona perfettamente.
/* This reorders toolbar to place tabs below other toolbars. Requires Firefox 133+ */
@media (-moz-bool-pref: "userchrome.force-window-controls-on-left.enabled"){
#nav-bar > .titlebar-buttonbox-container{
order: -1 !important;
> .titlebar-buttonbox{
flex-direction: row-reverse;
}
}
}
@media not (-moz-bool-pref: "sidebar.verticalTabs"){
.global-notificationbox,
#tab-notification-deck,
#TabsToolbar{
order: 1;
}
#TabsToolbar > :is(.titlebar-spacer,.titlebar-buttonbox-container){
display: none;
}
:root[sizemode="fullscreen"] #nav-bar > .titlebar-buttonbox-container{
display: flex !important;
}
:root[tabsintitlebar] #toolbar-menubar:not([autohide="false"]) ~ #nav-bar{
> .titlebar-buttonbox-container{
display: flex !important;
}
:root[sizemode="normal"] & {
> .titlebar-spacer{
display: flex !important;
}
}
:root[sizemode="maximized"] & {
> .titlebar-spacer[type="post-tabs"]{
display: flex !important;
}
@media (-moz-bool-pref: "userchrome.force-window-controls-on-left.enabled"),
(-moz-gtk-csd-reversed-placement),
(-moz-platform: macos){
> .titlebar-spacer[type="post-tabs"]{
display: none !important;
}
> .titlebar-spacer[type="pre-tabs"]{
display: flex !important;
}
}
}
}
}