body {
    background-image: url(../img/FND.jpg);
    background-repeat: no-repeat;
    background-position: top;
    background-size: cover;
    background-attachment: fixed;
    height: 100%;
}

#logo {
    margin:50px auto;
    width: 80%;
    max-width:400px;
    text-align:center;
    display:block;
}