#main_content{
width:750px;
margin-left:120;
}

#graphic_content{
width:100%;
position:absolute;
top:0;
}

#graphic_content_w{
width:100%;
position:absolute;
top:0;
background-color:white;
}

#graphic_content_b{
width:100%;
position:absolute;
top:0;
background-color:#121212;
}