.pace {
  z-index: 2000;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 100%;
  background:#fff url(../images/main-preloader.gif) no-repeat center center;
  position: fixed;
  display: block;
  border:0;
}
.pace.pace-inactive {
  display: none;
}