@-moz-document url("chrome://browser/content/browser.xul") {

  window #browser-panel #navigator-toolbox {
    -moz-box-orient: horizontal !important;
  }

  window #browser-panel #navigator-toolbox > #nav-bar {
    -moz-box-ordinal-group: 0 !important;
  }
  
  window #browser-panel #navigator-toolbox > #toolbar-menubar {
    -moz-box-ordinal-group: 3001 !important;
  }

  #navigator-toolbox > toolbar[collapsed="true"],
  #navigator-toolbox > toolbar[autohide="true"] {
    display: none !important;
  }
  
  #navigator-toolbox > toolbar:not(:-moz-lwtheme) {
    box-shadow: none !important;
    -moz-appearance: menubar !important;
    color: -moz-menubartext;
  }

  #nav-bar,
  #navigator-toolbox toolbar:last-of-type {
    -moz-box-flex: 1 !important;
  }

  #navigator-toolbox > toolbar:not(:first-child) {
    border-left: none !important;
  }

}