#main-window[tabsintitlebar="true"]:not([extradragspace="true"]) #TabsToolbar > .toolbar-items {
  opacity: 0;
  pointer-events: none;
}

#main-window:not([tabsintitlebar="true"]) #TabsToolbar {
    visibility: collapse !important;
}

#sidebar-header {
  display: none;
}

#main-window[inFullscreen] #sidebar-box,

#main-window[inFullscreen] #sidebar-splitter {
  display: none !important;
  width: 0px !important;
}