html,body  {
width:100%;
height:100%;
text-align:center;
background-color:#FFFFFF;
}

#center {
position:absolute;
width:960px;
height:540px;
top:50%;
left:50%;
margin-left:-480px;
margin-top:-270px;
}

.main_td {
width:100%;
height:100%;
padding:0px;
margin:0px;
padding:0px;
border-collapse:collapse;
border:0px;
vertical-align:top;
text-align:center;
margin-left:auto;
margin-right:auto;
padding-top:10px;
}