.snowflake {
  position: absolute;
  top: -10px;
  width: 10px;
  height: 10px;
  background: #FFFFFF; /* Color blanco para los copos */
  border-radius: 50%;
  opacity: 0.8;
  animation: fall linear infinite;
}

@keyframes fall {
  0% {
    transform: translateY(-10px) translateX(0);
    opacity: 1;
  }
  100% {
    transform: translateY(110vh) translateX(calc(-20px + 10vw));
    opacity: 0.2;
  }
}