userChrome.css

:root {
    --mff-bg: #1F1F1F;
    --mff-urlbar-font-family: "PragmataPro Nerd Font", sans;
    --mff-urlbar-font-size: 12pt;
    --mff-urlbar-font-weight: 600;

  --toolbar-bgcolor: var(--mff-bg) !important;
}


#navigator-toolbox:hover {
    height: 32px;
    transition-property: height;
    transition-duration: 0.5s;
    transition-delay: 0s;
}

/*hide tabbar*/
#TabsToolbar { visibility: collapse !important; }

/*hide scrollbars*/
#content browser, .browserStack>browser {
    margin-right:-17px!important;
    /*margin-bottom:-17px!important;*/
    overflow-y:hidden;
    overflow-x:hidden;
}

/*fix white flash*/
.browserContainer { background-color: #121212 !important; }

#back-button, #forward-button { display:none!important; }

/*disable reader view*/
#reader-mode-button,
#readinglist-addremove-button {
 display:none !important;
}

/*disable zoom button*/
#urlbar-zoom-button {display:none!important}


#tracking-protection-icon-container, #identity-box {
  display: none;
}

#urlbar-background {
  opacity: .9 !important;
}


/*.urlbarView-favicon, .urlbarView-type-icon {*/
  /*display: none !important;*/
/*}*/

box.panel-arrowbox {
  display: none;
}

image#star-button {
  display: none;
}

#navigator-toolbox, toolbaritem {
  border: none !important;
}

#urlbar-background {
  background-color: var(--mff-bg) !important;
  border: none !important;
}

#pageActionButton {
    display: none;
}

#urlbar-input {
  font-size: var(--mff-urlbar-font-size) !important;
  color: var(--mff-urlbar-color) !important;
  font-family: var(--mff-urlbar-font-family) !important;
  font-weight: var(--mff-urlbar-font-weight)!important;
  text-align: center !important;
}

#statuspanel {
     display: none !important;
}

/*#PanelUI-button { display:none!important; }*/