.progress
{
 background-color:white;
 background-image:url(/App_Masters/img/loading.gif);
 background-repeat:no-repeat;
 background-position:center center;
 width:200px;
 height:200px;
 text-align:center;
 vertical-align: middle;
 position:absolute;
 top:50%;
 left:50%;
 border: #000000 1px solid;
 margin-left:-100px;
 margin-top:-100px;
}