@keyframes identifier {
  0%{
    opacity: 0;
    transform: translate3d(30px, 0, 0);
  }
  100%{
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes identifier2 {
  0%{
    opacity: 0;
    transform: translate3d(-30px, 0, 0);
  }
  100%{
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}