jellyfin-web/dashboard-ui/components/appfooter/appfooter.css

.appfooter{background:#1c1c1c;position:fixed;left:0;right:0;z-index:1;bottom:0;-webkit-transition:-webkit-transform 180ms linear;-o-transition:transform 180ms linear;transition:transform 180ms linear;contain:layout style}.appfooter-blurred{background:rgba(28,28,28,.92);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}.appfooter.headroom--unpinned{-webkit-transform:translateY(100%);transform:translateY(100%)}