.preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 9999;
  background-image: url('/Page-Js/loading.gif');
  background-repeat: no-repeat;
  background-color: #FFF;
  background-position: center;
  display: flex;
  justify-content: center;
  align-items: center;
}