@keyframes hoverBounce {
  0% {
    transform: translateY(0);
    opacity: 1;
  }
  30% {
    transform: translateY(0px);
    opacity: 0.9;
  }
  70% {
    transform: translateY(0px);
    opacity: 0.95;
  }
  100% {
    transform: translateY(0);
    opacity: 1;
  }
}

.image-how_to.animate-hover {
  animation: hoverBounce 0.6s ease-in-out;
}