jellyfin-web/dashboard-ui/css/librarymenu.css

.libraryPage {
    padding-top: 54px !important;
}

    .libraryPage:not(.metadataEditorPage):not(.noSecondaryNavPage) {
        padding-top: 97px !important;
    }

.desktopLibraryMenu {
    position: fixed;
    left: 0;
    z-index: 1001;
    top: 54px;
    background-color: #181818;
    width: 200px;
    min-height: 100px;
    border-bottom-right-radius: 5px;
}

.itemDetailPage .desktopLibraryMenu {
    background-color: rgba(24,24,24,.6);
}

.metadataEditorPage .desktopLibraryMenu {
    display: none;
}

.desktopLibraryMenuDivider {
    height: 1px;
    background: #333;
    margin: .5em 0;
}

.viewMenuBar {
    font-weight: bold;
    position: fixed;
    right: 0;
    left: 0;
    z-index: 1000;
    top: 0;
    background: #181818;
    padding: 3px .25em 3px 1em;
    border-bottom: 1px solid #101010;
}

.viewMenuLink {
    text-decoration: none;
    color: #ccc!important;
    padding: 7px .5em 6px;
    display: inline-block;
    vertical-align: middle;
}

    .viewMenuLink:hover {
        background-color: #555;
    }

.viewMenuBar .btnCurrentUser {
    padding: 7px 1em 6px;
}

.viewMenuLink:hover {
    color: #fff;
}

    .viewMenuLink:hover img {
        opacity: .5;
    }

.viewMenuLink img {
    height: 24px;
    vertical-align: top;
}

.viewMenuTextLink {
    display: block;
    padding: .6em .5em .6em 35px!important;
    font-size: 15px;
    font-weight: 300!important;
    font-family: Roboto;
}

.musicViewMenu {
    background-image: url(images/items/folders/music.png);
    background-repeat: no-repeat;
    background-size: 18px 18px;
    background-position: 8px 8px;
}

.tvshowsViewMenu {
    background-image: url(images/items/folders/tv.png);
    background-repeat: no-repeat;
    background-size: 18px 18px;
    background-position: 8px 8px;
}

.moviesViewMenu {
    background-image: url(images/items/folders/movies.png);
    background-repeat: no-repeat;
    background-size: 18px 18px;
    background-position: 8px center;
}

.gamesViewMenu {
    background-image: url(images/items/folders/games.png);
    background-repeat: no-repeat;
    background-size: 18px 18px;
    background-position: 8px 8px;
}

.channelsViewMenu {
    background-image: url(images/items/folders/channels.png);
    background-repeat: no-repeat;
    background-size: 18px 18px;
    background-position: 8px center;
}

.booksViewMenu {
    background-image: url(images/items/folders/books.png);
    background-repeat: no-repeat;
    background-size: 18px 18px;
    background-position: 8px center;
}

.collectionsViewMenu, .generalViewMenu, .homeVideosViewMenu {
    background-image: url(images/items/folders/homevideos.png);
    background-repeat: no-repeat;
    background-size: 18px 18px;
    background-position: 8px center;
}

.viewMenuSecondary {
    float: right;
}

.selectedMediaFolder {
    background-color: #38c!important;
    color: #fff!important;
}

.itemDetailPage .selectedMediaFolder {
    background-color: rgba(51,136,204,.8)!important;
}

.libraryViewNav {
    height: 42px;
    overflow: hidden;
    border-bottom: 1px solid #333;
    position: fixed;
    right: 0;
    left: 0;
    top: 54px;
    z-index: 1000;
    background-color: #252525;
}

.libraryViewNavInner {
    text-align: center;
    font-size: 14px;
    white-space: nowrap;
    padding: 0 0 0;
    overflow-x: auto;
    height: 55px;
}

.libraryViewNav .ui-btn-active .libraryViewNavLinkContent {
    border-bottom-color: #38c;
    color: #fff;
}

.libraryViewNav a {
    display: inline-block;
    padding: 12px 0 0;
    color: #eee!important;
    text-decoration: none;
    margin: 0 0;
    position: relative;
    font-weight: normal;
}

    .libraryViewNav a:hover {
        color: #bbb!important;
    }

.libraryViewNavLinkContent {
    border-bottom: 5px solid transparent;
    display: inline-block;
    padding: 0 .9em 7px;
    color: #ddd;
}

.desktopHomeLink {
    color: #ddd !important;
    margin-right: 2em;
    text-decoration: none;
    font-weight: 400!important;
}

    .desktopHomeLink span {
        vertical-align: middle;
    }

@media all and (min-width: 1280px) {

    .libraryMenuButton {
        display: none;
    }

    .libraryPage:not(.itemDetailPage):not(.metadataEditorPage) {
        left: 215px !important;
        width: auto !important;
        right: 0 !important;
    }

    .libraryPage:not(.itemDetailPage) .libraryViewNav {
    }
}

@media all and (max-width: 1280px) {

    .desktopHomeLink {
        display: none;
    }

    .libraryViewNavInner {
        text-align: left;
    }

    .desktopLibraryMenu {
        display: none;
    }
}

@media all and (min-width: 750px) {

    .viewMenuBar .btnCurrentUser {
        padding-right: 1.5em;
    }
}