JSFiddle - React, Tailwind, and code Playground

HTML

<div></div>

CSS

div {
    width: 200px;
    height: 200px;
    background: #CCC;
    animation-name: example;
    animation-duration: 4s;
    animation-iteration-count: infinite;
}

@keyframes example {
    from {background: red;}
    to {background: pink;}
}