.card {
  background-color: #eeefef;
  color: white;
  animation: pulse 1.5s cubic-bezier(0.4, 0, 0.2, 1) infinite;
  animation-delay: 0.5s;
}

@keyframes pulse {
  0% {
    opacity: 1;
  }
  50% {
    opacity: 0.4;
  }
  100% {
    opacity: 1;
  }
}