body .starry-sky {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}
body .starry-sky .star {
  width: 2px;
  height: 2px;
  background: white;
  border-radius: 50%;
  position: absolute;
}