body {
    animation: change-color 8s steps(4, start) infinite;;
    animation-direction: alternate;
}

@keyframes change-color {
   0% {
    background-color: ivory;
  }

  25% {
    background-color: hotpink;
  }

  50% {
    background-color: lightcyan;
  }


  75% {
    background-color: palegreen;
  }


    100% {
    background-color: lightpink;
  }
}