@keyframes scroll-icon{0% {
    -webkit-transform:translateY(-12px);
            transform: translateY(-12px);
    opacity: 0;
  }
  30%, 70% {
    opacity: 1;
  }
  100% {
    -webkit-transform: translateY(12px);
            transform: translateY(12px);
    opacity: 0;
  };
}