#loader {
  position: absolute;
  display: block;
  left: 0;
  right: 0;
  margin-left: auto;
  margin-right: auto;
  z-index: 1;
  -webkit-transform: translate3d(0, -50%, 0);
  -moz-transform: translate3d(0, -50%, 0);
  -o-transform: translate3d(0, -50%, 0);
  -ms-transform: translate3d(0, -50%, 0);
  transform: translate3d(0, -50%, 0);
  text-align: center;
  border-radius: 50%;
  width: 98px;
  height: 100px;
  top: 50%;
}