JSFiddle - React, Tailwind, and code Playground

HTML

<div>asdadadsa</div>

CSS

@-webkit-keyframes background {
  from { background: yellow; }
  to {
    background: blue;
  }
}

div {
  -webkit-animation-name: background;
  -webkit-animation-duration: 100s;
  -webkit-animation-fill-mode: forwards;
  -webkit-animation-delay: -40s;
  -webkit-animation-play-state: paused;
}