#s_loading {
  display: table;
  width: 100%;
  height: 100%;
  position: fixed;
  top: 0;
  left: 0;
  background-color: #fff;
  opacity: 0.8;
}
 
#s_loading .s_loading_message {
  display: table-cell;
  text-align: center;
  vertical-align: middle;
  padding-top: 140px;
  background: url("/pg/loading/loading.gif") center center no-repeat;
}