Animation Lab

@keyframes fadeIn {
  0% { opacity: 0; }
  100% { opacity: 1; }
}

.element {
  animation-name: fadeIn;
  animation-duration: 2s;
  animation-delay: 0s;
  animation-timing-function: ease;
  animation-direction: normal;
  animation-iteration-count: infinite;
  animation-fill-mode: none;
}