#av_gradient
{
position:absolute;
top:200px;
left:400px;
}
#main
{
background:#f0f8ff;
padding:5px;
border:1px solid blue;
width:700px;
margin:auto;
}
#geom
{
background:#f0f8ff;
font-weight:bold;
position:absolute;
top:220px;
left:165px;
}