body {
    margin: 0;
}

.intro {
    display: block;
    width: 100vw;
    height: 100vh;
    padding: 0;
    text-align: center;
    color: white;
    background: url('MAN-SITE.jpg') no-repeat bottom center scroll;
    background-color: black;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    background-size: cover;
    -o-background-size: cover;
}