:root {
  --sk-size: 64px;
  --sk-color: #fff;
}
.preloader {
  height: 100%;
  width: 100%;
  top: 0;
  position: fixed;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
}
[dir] .preloader {
  background: #1a4f74;
}