html, body {
    font-family: arial, helvetica, sans-serif;
    font-size: 10px;
    background-color:#000;
    color: #fff;
    
    height: 100%;
    margin:0;
    padding:0;
}

div {
    position:relative;
    height: 100%;
    width:100%;
}

div img {
    position:absolute;
    top:0;
    left:0;
    right:0;
    bottom:0;
    margin:auto;
}