JSFiddle - React, Tailwind, and code Playground

HTML

<div id = 'test'></div>

CSS

#test {
  width: 50px;
  height: 50px;
  background: red;
  position: relative;
  animation: cycle 4s linear infinite;
}
@keyframes cycle {
  0% {left: 0;}
  50% {left: 300px;}
  100% {left: 0;}
}