.fa.modal-loading {
  position: fixed;
  top: 50%;
  left: 50%;
  margin-top: -36px;
  margin-left: -36px;
  width: 72px;
  height: 72px;
  color: #000;
  text-shadow: 0 1px 5px #fff;
  background-color: transparent;
  display: block;
  z-index: 10000;
}