body {
  background: linear-gradient(120deg, #E19E1C, #FFFFFF, #FFFFFF, #000000, #FFFFFF);
  background-size: 400% 400%;
  animation: backgroundFlow 30s ease infinite;
}

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