* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: #ffffff;
    font-family: Arial, sans-serif;
    text-align: center;
}

.container {
    max-width: 100%;
    padding: 20px;
}

h1 {
    font-size: 28px;
    margin-bottom: 10px;
}

.playlist {
    margin-bottom: 10px;
}

.playlist h2 {
    font-size: 20px;
    margin-bottom: 5px;
}

.playlist ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.playlist li {
    font-size: 16px;
    padding: 5px;
    border: 1px solid black;
    margin-bottom: 5px;
    cursor: pointer;
}

.playlist li:hover {
    background-color: #2e2e2e;
}

audio {
    width: 100%;
    margin-bottom: 10px;
}

audio::-webkit-media-controls-panel {
    background-color: white;
    color: black;
}

audio::-webkit-media-controls-play-button {
    background-color: #ffffff;
    color: white;
}

audio::-webkit-media-controls-pause-button {
    background-color: black;
    color: white;
}

@media only screen and (min-width: 600px) {
    .container {
        max-width: 600px;
        margin: 0 auto;
    }

    h1 {
        font-size: 36px;
        margin-bottom: 20px;
    }

    .playlist li {
        font-size: 18px;
        padding: 10px;
        margin-bottom: 10px;
    }

    .playlist h2 {
        font-size: 24px;
        margin-bottom: 10px;
    }

    audio {
        margin-bottom: 20px;
    }
}