@keyframes pulse {
  50% {
    box-shadow: 0 0 0 8px #2bdbfc22;
  }
}
.btn-primary {
  animation: pulse 3s infinite;
}
.card {
  transition:
    transform 0.25s,
    box-shadow 0.25s;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px #0005;
}