body {
margin:0;
padding:0;
height:100%;
width:100%;
background-color:#000000;
} 


#container {
position:absolute; 
height:100%;
width:100%;
text-align:center;
}

#container img {
position:relative; 
height:311px;
width:673px;
top:50%;
margin-top:-156px;
border:0px;
}