UwU

@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");

@namespace html url("http://www.w3.org/1999/xhtml");

label
{
  text-shadow: none !important;
}

menu, menuitem
{
  font: message-box !important;
  font-size: 10pt !important;
}

#TabsToolbar {
   background: transparent !important;
   padding-left: 2px !important;
   background-color: transparent !important;
}


tab .tab-content{
   background: transparent !important;
}

tab .tab-line{
   height: 1px !important;
   opacity: .5 !important;
   display: none !important;
 }

 #TabsToolbar, #titlebar, #nav-bar, #TabsToolbar .tabbrowser-tab[selected], #PersonalToolbar, .tab-background{
    -moz-appearance: -moz-mac-vibrancy-light !important;
}

#TabsToolbar .tabs-newtab-button{
  display: none !important;
}

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

.tabbrowser-tab {
  opacity: .5 !important;
}

tab[selected] {
  color: black !important;
}

.tabbrowser-tab[selected] {
  opacity: 1 !important;
}


#TabsToolbar .tabbrowser-tab::after,
#TabsToolbar .tabbrowser-tab::before
{
  visibility: collapse;
}

#TabsToolbar .tab-close-button
{
  border-radius: 2px !important;
  transition: opacity 150ms !important;
    /* small x */
  list-style-image: url('data:image/svg+xml;utf8,\
        <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16">\
          <line x1="4.5" y1="4.5" x2="11.5" y2="11.5" stroke="rgb(84,82,84)" stroke-width="1"/>\
          <line x1="4.5" y1="11.5" x2="11.5" y2="4.5" stroke="rgb(84,82,84)" stroke-width="1"/>\
        </svg>') !important;
}

@media (max-resolution: 1.9dppx)
{
  #TabsToolbar .tab-close-button
  {
    list-style-image: url('data:image/svg+xml;utf8,\
            <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16">\
              <line x1="4.5" y1="4.5" x2="11.5" y2="11.5" stroke="rgb(84,82,84)" stroke-width="1.5"/>\
              <line x1="4.5" y1="11.5" x2="11.5" y2="4.5" stroke="rgb(84,82,84)" stroke-width="1.5"/>\
            </svg>') !important;
  }
}

#TabsToolbar tab:not(:hover) .tab-close-button
{
  opacity: 0 !important;
}

#TabsToolbar tab:hover .tab-close-button
{
  opacity: 1 !important;
}

#TabsToolbar tab .close-icon:hover
{
  background-color: rgba(0,0,0,0.1) !important;
  background-clip: padding-box !important;
}

#TabsToolbar tab .close-icon:hover:active
{
  background-color: rgba(0,0,0,0.15) !important;
}

#TabsToolbar .tab-content[selected=true]:-moz-window-inactive
{
  opacity: 0.8 !important;
}

#back-button > .toolbarbutton-icon{
    background: inherit !important;
    border: none !important;
    box-shadow: none !important;
  }

#nav-bar #urlbar-container {
  -moz-box-pack: center !important;
  -moz-window-dragging: drag !important;
}

#nav-bar #urlbar-wrapper {
  max-width: calc(var(--ubwidth) + 28px) !important;
  width: calc(var(--ubwidth) + 28px) !important;
}

#urlbar
{
  min-width: calc(var(--ubwidth)) !important;
  width: var(--ubwidth) !important;
  max-width: var(--ubwidth) !important;
  margin: 7px 0px !important;
  -moz-box-pack: center !important;
  text-align: center !important;
}

#nav-bar #urlbar-container::before,
#nav-bar #urlbar-container::after {
  content: '';
  display: inline-flex;
  min-width: 7px;
  max-width: 200px !important;
  -moz-box-flex: 1 !important;
}

#tabbrowser-tabs ~ #alltabs-button {
  visibility:visible!important;
  margin-right: -3px !important;
}

#star-button {
  display: none !important;
}

.urlbar-history-dropmarker {
  display: none !important;
}

#identity-box {
  opacity: 0 !important;
  transition: opacity 150ms ease-in-out !important;
}

#urlbar:hover #identity-box {
  opacity: 1 !important;
  transition: opacity 150ms ease-in-out !important;
  }

#reader-mode-button, #readinglist-addremove-button {
  opacity: 0 !important;
  transition: opacity 150ms ease-in-out !important;
}

#urlbar:hover #reader-mode-button, #readinglist-addremove-button {
  opacity: 1 !important;
  transition: opacity 150ms ease-in-out !important;
}

#page-action-buttons, #pageActionSeparator {
  transition: opacity 150ms ease-in-out !important;
  opacity: 0 !important;
}

#urlbar:hover #page-action-buttons, #pageActionSeparator {
  transition: opacity 150ms ease-in-out !important;
  opacity: 1 !important;
}

#TabsToolbar .tabbrowser-arrowscrollbox > .arrowscrollbox-scrollbox
{
  padding-inline-start: 0px !important;
  padding-inline-end: 0px !important;
}

.tabbrowser-arrowscrollbox > .arrowscrollbox-overflow-start-indicator,
.tabbrowser-arrowscrollbox > .arrowscrollbox-overflow-end-indicator {
    display: none !important;
}