@media not (-moz-bool-pref: "uc.private-browsing-top-bar.no-bg") {
  [privatebrowsingmode] #nav-bar {
    background-image: linear-gradient(to bottom, #25003EFF, #25003E44) !important;
  }

@media (-moz-bool-pref: "uc.private-browsing-top-bar.solid-bg") {
    [privatebrowsingmode] #nav-bar {
      background-image: none !important;
      background-color: #25003E !important;
    }
  }
}

@media not (-moz-bool-pref: "uc.private-browsing-top-bar.hide-icon") {
  [privatebrowsingmode] #stop-reload-button {
    position: relative;
  }

[privatebrowsingmode] #stop-reload-button::after {
    content: "";
    position: absolute;
    left: 100%;
    top: 0;
    width: 100%;
    height: 100%;
    background-image: url("chrome://global/skin/icons/indicator-private-browsing.svg");
    background-repeat: no-repeat;
    background-position: center center;
  }
}