body {
  padding: 0;
  margin: 0;
}

.loader {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  min-height: 768px;
}

.loader > img {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 60px;
  margin: auto;
}