@namespace html url("http://www.w3.org/1999/xhtml");

#toolbar-menubar { order: -1 !important; }
unified-toolbar { visibility: collapse !important; }

/*
@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");
@namespace html url("http://www.w3.org/1999/xhtml");

toolbar#toolbar-menubar { order: 1 !important; }
html|unified-toolbar    { order: 2 !important; }
toolbar#tabs-toolbar    { order: 3 !important; }
*/