body	{
background-color:#ffffff;
}

#horizon {
text-align:center;
position:absolute;
top:50%;
left:0px;
width:100%;
}

#site {
position:absolute;
width:1000px;
margin-left:-500px; /* helft width */
height:600px;
top:-300px; /* helft height */
left:50%;
}