Template:TrackPlayer/style.css

div.track {
    max-width: 720px;
    box-sizing: border-box;
    padding: 0.5em 0.4em;
    line-height: normal;
}

div.track-standalone {
    background-color: #f8f9fa;
    border: 1px solid #a2a9b1;
    margin: 0.2em 0;
}

div.track .id {
    float: right;
    color: #a2a9b1;
}

div.track .artist {
    display: block;
}

div.track .title {
    display: block;
    font-size: 22px;
    font-weight: bold;
}

div.track .player {
    display: block;
    width: 100%;
    text-align: center;
    margin: 0.6em auto 0.2em;
    clear: both;
}