body {
    background-image: url('background.jpg');
    background-size: 100% 100%;
    background-repeat: no-repeat;
}

body {
    text-align: center;
}

img {
    width: 100%;
    max-width: 700px;
    height: auto;
}

@media screen and (max-width: 479px) {
    img {
        max-width: none;
    }
}

div {
    position: relative;
    margin: 0 auto;
    display: inline-block;
}

div iframe {
    position: absolute;
    top: 38%;
    left: 12.25%;
    width: 76%;
    height: 43%;
}

footer {
    width: 100%;
    text-align: center;
    padding: 2em 0;
    color: #fff;
    background-color: #000;;
}