@namespace xul url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");

#TabsToolbar {
	min-height: 0 !important;

	#tabbrowser-tabs tab:only-of-type,
	#alltabs-button {
		display: none !important;
	}

	.tab-background,
	.tab-stack {
		min-height: 0 !important;
	}

	#tabbrowser-tabs,
	#tabbrowser-tabs arrowscrollbox {
		min-height: 0 !important;
		--tab-min-height: 0 !important;
	}
}