.snowflake {
  position: fixed;
  top: -10px;
  color: white;
  font-size: 1em;
  pointer-events: none;
  user-select: none;
  z-index: 9999;
  opacity: 0.8;
  animation: fall linear forwards;
}

@keyframes fall {
  to {
    transform: translateY(110vh);
    opacity: 0.2;
  }
}

body {
  /* background: linear-gradient(#001, #114); */
  height: 200vh; /* for scrolling preview */
}