#loading-bg {
  background: #ccc;
  position: fixed;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 20000;
  filter:alpha(opacity=60);
  -moz-opacity: 0.6;
  opacity: 0.6;
}
#loading {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  margin: auto;
  height: 3.2rem;
  text-align: center;
  color: #FFF;
}