JSFiddle - React, Tailwind, and code Playground

HTML

<body class="blink">

CSS

@-webkit-keyframes blink { 0% { background-color: red } 50% { background-color: black } }
	@-moz-keyframes blink { 0% { background-color: red } 50% { background-color: black } }
	@keyframes blink { 0% { background-color: red } 50% { background-color: black } }

	body.blink {
	  -webkit-animation: blink 0.7s infinite linear alternate;
	  -moz-animation: blink 0.7s infinite linear alternate;
	  animation: blink 0.7s infinite linear alternate;
	}