.beat-it {
  animation: 3s infinite beating;
}

@keyframes beating {
  0% {
    transform: scale(1);
  }
  10% {
    transform: scale(1.06);
  }
  30% {
    transform: scale(1);
  }
  40% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
  80% {
    transform: scale(1);
  }
}