@keyframes ping-custom {
  0% {
    transform: scale(1);
    opacity: 0.5;
  }
  20% {
    transform: scale(1.40);
    opacity: 0.5;
  }
  60% {
    transform: scale(1.40);
    opacity: 0.5;
  }
  100% {
    transform: scale(1.40);
    opacity: 0;
  }
}

.ping-custom {
  animation: ping-custom 3s cubic-bezier(0, 0, 0.4, 1) infinite;
}