scrollbox:nth-child(5) {
      scrollbar-width: thin !important;
}

@media (-moz-bool-pref: "zen.view.sidebar-expanded") {
      scrollbox:nth-child(5) {
            scrollbar-width: auto !important;
      }
}

#navigator-toolbox {
      -moz-window-dragging: no-drag; /* Disables window dragging */
}