#loading {
  position: fixed;
  display: block;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  text-align: center;
  opacity: 0.7;
  background-color: #fff;
  display: none;
}

#loading-image {
  position: absolute;
  top: 50%;
  z-index: 1000;
}