body {
    background: #111;
    height: 100%;
}

img {
    border: none;
}


#funbackground {
    display: block;
    position: fixed;
    left: 0;
    top: 0;
    overflow: hidden;
    z-index: -999;
    height: 100%;
    width: 100%;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center center;
}