@keyframes gradient-yellow {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.bg-animated-yellow {
  background: linear-gradient(270deg, #facc15, #fde047, #fbbf24, #fcd34d);
  background-size: 600% 600%;
  animation: gradient-yellow 20s ease infinite;
}