body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

h1 {
    text-align: center;
}

#player {
    background-color: #fff;
    border-radius: 5px;
    padding: 20px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

#audio {
    width: 100%;
    margin-bottom: 20px;
}

.track {
    padding: 10px;
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    margin-bottom: 5px;
    cursor: pointer;
}

.track:hover {
    background-color: #e9e9e9;
}