/* 1. Define what the animation does */
@keyframes pulse {
  0%, 100% { background-color: #f3f4f6; } /* Light grey */
  50% { background-color: #d1d5db; }    /* Darker grey */
}

/* 2. Create a class you can add to ANY element to make it pulse */
.is-loading {
  animation: pulse 2s ease-in-out infinite;
}