jellyfin-web/dashboard-ui/bower_components/emby-webcomponents/alphapicker/style.css

.alphaPicker {
    text-align: center;
    display: flex;
    flex-direction: column;
}

.alphaPickerRow {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: row;
}

.alphaPicker-vertical .alphaPickerRow {
    flex-direction: column;
}

.alphaPickerButton {
    background: transparent;
    border: 0 !important;
    cursor: pointer;
    outline: none !important;
    color: inherit;
    vertical-align: middle;
    font-family: inherit;
    font-size: inherit;
    min-width: initial;
    margin: 0;
    padding: .1em .4em;
    width: auto;
    border-radius: .1em;
    font-weight: normal;
    opacity: .6;
}

.alphaPicker-vertical .alphaPickerButton {
    padding: .2em .4em;
}

.alphaPickerButtonIcon {
    width: 3.3vh;
    height: 3.3vh;
    font-size: 3.3vh;
}

.alphaPickerButton-selected {
    color: #000;
    background-color: #bbb;
    opacity: 1;
}

.layout-tv .alphaPickerButton:focus {
    background-color: #52B54B;
    opacity: 1;
    color: #fff;
}