Set density to compact, and enable menu bar

#TabsToolbar { -moz-box-ordinal-group: 2;
    max-height: 16px !important; }
#toolbar-menubar { height:18px!important;
min-height:12px!important;
margin-top:-5px!important;
margin-bottom:3px!important; }
#nav-bar{ border-top-width: 0px !important;
    border-top-width:0px!important;
    padding-top:0px!important;
    padding-bottom:0px!important;
    height:17px!important; }
#nav-bar .toolbarbutton-1 {
  min-height: 22px !important;
  height: 24px !important;
}
#urlbar,
.searchbar-textbox {
  margin: 0px !important;
  min-height: 0px !important;
  height: 16px !important;
}
#main-window[uidensity=compact] #nav-bar #nav-bar-customization-target > toolbaritem{
  margin: 0px !important;
  padding: 0px !important;
}
#navigator-toolbox #TabsToolbar .close-icon > .toolbarbutton-icon {
  min-width: 16px !important;
  width: 16px !important;
  min-height: 16px !important;
  height: 16px !important;
}
#TabsToolbar[movingtab] {
  padding-bottom: unset !important;
}
#TabsToolbar[movingtab] > .tabbrowser-tabs {
  padding-bottom: unset !important;
  margin-bottom: unset !important;
}
#TabsToolbar[movingtab] + #nav-bar {
  margin-top: unset !important;
}
#nav-bar:not(:-moz-lwtheme),
toolbar:not(#TabsToolbar):not(#toolbar-menubar):not(#nav-bar):not(:-moz-lwtheme) {
  -moz-appearance: none !important;
  box-shadow: unset !important;
}
#nav-bar:not(:-moz-lwtheme) {
  background-image: linear-gradient(#f9f9fa,#f9f9fa) !important;
}
toolbar:not(#TabsToolbar):not(#toolbar-menubar):not(#nav-bar):not(:-moz-lwtheme) {
  background-image: linear-gradient(#f9f9fa,#f9f9fa) !important;
}
#tabbrowser-tabs,
#tabbrowser-tabs > .tabbrowser-arrowscrollbox,
.tabbrowser-tabs[positionpinnedtabs] > .tabbrowser-tab[pinned] {
  min-height: 16px !important;
}
#TabsToolbar:not(:-moz-lwtheme) .tabbrowser-tab {
  color: #000000 !important;
}
#TabsToolbar:not(:-moz-lwtheme) .tabs-newtab-button,
#TabsToolbar:not(:-moz-lwtheme) .tabbrowser-tab .tab-content {
  background-image: linear-gradient(to top,#aeaba5,#c1beb7,#c9c6be) !important;
}
#TabsToolbar:not(:-moz-lwtheme) .tabbrowser-tab .tab-content[selected="true"] {
  background-image: linear-gradient(#f9f9fa,#f9f9fa) !important;
}
#TabsToolbar:not(:-moz-lwtheme) .tabs-newtab-button:hover,
#TabsToolbar:not(:-moz-lwtheme) .tabbrowser-tab:hover .tab-content:not([selected="true"]) {
  background-image: linear-gradient(to top,#cac7c1,#d5d2cc,#e8e6e2) !important;
}
#titlebar-close {
    margin-top:-1px !important;
}
#titlebar-max {
    margin-top:-1px !important;
}
#titlebar-min {
    margin-top:-1px !important;
}