FF72 und die Tabs

@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"); /* only needed once */
@namespace html url("http://www.w3.org/1999/xhtml");
    .sidebar-placesTree treechildren::-moz-tree-row  {
      min-height: 20px !important;
      height: 20px !important;
    }
    .sidebar-placesTree treechildren::-moz-tree-image{
      margin: -2px 2px !important;
    }
/* Suchleiste bei URL-Eingabe abschalten, Quelle: https://www.camp-firefox.de/forum/viewtopic.php?f=1&t=127163 */
#PopupAutoCompleteRichResult{
  display: none !important;
}
/* TabsOnBottom, Quelle: https://support.mozilla.org/de/questions/1248277 */
#navigator-toolbox toolbar:not(#nav-bar):not(#toolbar-menubar) {-moz-box-ordinal-group:10}
#TabsToolbar {-moz-box-ordinal-group:1000!important}
#TabsToolbar {
 position: absolute !important;
 bottom: 0 !important;
 width: 100vw !important;
}
#tabbrowser-tabs {
  width: 100vw !important;
}
#main-window:not([chromehidden*="toolbar"]) #navigator-toolbox {padding-bottom: var(--tab-min-height) !important;}
/* TABS: height */
:root {
 --tab-toolbar-navbar-overlap: 0px !important;
 --tab-min-height: 30px !important; /* adjust to suit your needs */
}
:root #tabbrowser-tabs {
 --tab-min-height: 30px !important; /* needs to be the same as above under :root */
 --tab-min-width: 80px !important;
}
#TabsToolbar {
 height: var(--tab-min-height) !important;
 margin-bottom: 1px !important;
 box-shadow: ThreeDShadow 0 -1px inset, -moz-dialog 0 1px !important;
}
#tabbrowser-tabs,
#tabbrowser-tabs > .tabbrowser-arrowscrollbox,
.tabbrowser-tabs[positionpinnedtabs] > .tabbrowser-tab[pinned] {
  min-height: var(--tab-min-height) !important;
  max-height: var(--tab-min-height) !important;
}
/* drag space */
.titlebar-spacer[type="pre-tabs"],
.titlebar-spacer[type="post-tabs"] {
  width: 40px;
}
/* Override vertical shifts when moving a tab */
#navigator-toolbox[movingtab] > #titlebar > #TabsToolbar {
  padding-bottom: unset !important;
}
#navigator-toolbox[movingtab] #tabbrowser-tabs {
  padding-bottom: unset !important;
  margin-bottom: unset !important;
}
#navigator-toolbox[movingtab] > #nav-bar {
  margin-top: unset !important;
}
/* hide windows-controls */
#TabsToolbar #window-controls {display:none!important;}
/* move caption buttons to right of Tab bar */
#main-window[tabsintitlebar]:not([inFullscreen="true"]) #toolbar-menubar[autohide="true"] ~ #TabsToolbar .titlebar-buttonbox-container {
 position: fixed !important;
 right: 0 !important;
 top: calc(6px + var(--tab-min-height)) !important;
 display: block !important;
 visibility: visible !important;
}
#toolbar-menubar[autohide="true"] ~ #TabsToolbar {padding-right: 100px !important;}