JSFiddle - React, Tailwind, and code Playground

HTML

<div class="box"></div>

CSS

.box {
  width: 200px;
  height: 200px;
  background-color: aqua;
  position: absolute;
  left: 0;
  top: 0;
  animation: test 3s linear 2s infinite;
}

@keyframes test {
  from {}
  to {
    width: 50px;
    height: 50px;
    background-color: red;
    opacity: 0.5;
    left: 500px;
    top: 500px;
  }
}