body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

header {
    background: #35424a;
    color: #ffffff;
    padding: 10px 0;
    text-align: center;
}

main {
    padding: 20px;
}

h1, h2 {
    margin: 0;
}

#music-list {
    margin-bottom: 20px;
}

#tracks {
    list-style-type: none;
    padding: 0;
}

#tracks li {
    padding: 10px;
    background: #ffffff;
    margin-bottom: 5px;
    cursor: pointer;
}

#player {
    background: #ffffff;
    padding: 10px;
}