* {
    margin: 0;
    padding: 0;
}
body {
    font-family: Arial, Helvetica, sans-serif;
}
#map { width: 100%; height: 480px; }

.footer {
    position: fixed;
    bottom: 0;
    background-color: cadetblue;
    padding: 1em;
    width: 100%;
}