@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, .7);
  }

  70% {
    box-shadow: 0 0 0 1.5rem rgba(37, 211, 102, 0);
  }

  100% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
  }
}