html {
    margin: 0;
    min-height: 100%;
    padding: 0;
} body {
    background-color: #111111;
    color: lime;
    font-family: 'Roboto', sans-serif;
    margin: 0;
    min-height: 100vh;
    padding: 0;
} section#content {
    margin: 40px auto;
    max-width: 600px;
    padding: 20px;
    width: auto;
} section#audio {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
} audio {
    width: 100%;
} a {
    background-color: lime;
    color: #111111;
    display: inline-block;
    padding: 10px 20px;
    text-decoration: none;
} a:hover {
    background-color: greenyellow;
}