freeplanet/src/App.scss

.fade-enter-active, .fade-leave-active {
  transition: opacity .2s;
}

.fade-enter, .fade-leave-to /* .fade-leave-active below version 2.1.8 */
{
  opacity: 0;
}

.slide-enter {
}

.slide-enter-active {
  animation: slide-in 0.2s ease-out forwards;
}

.slide-leave {
}

.slide-leave-active {
  animation: slide-out 0.5s ease-out forwards;
}

@keyframes slide-in {
  from {
    transform: translateX(-500px);
  }
  to {
    transform: translateX(0);
  }
}

@keyframes slide-out {
  from {
    transform: translateX(0);
  }

  to {
    transform: translateX(1600px);
  }
}