JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>JS Bin</title>
</head>
<body>
  <div id="mobile">this is mobile</div>
  <div id="desktop">this is desktop</div>
</body>
</html>

CSS

.content { background: orange; padding: 30px; }
#mobile { display:none; }

@media screen and (max-device-width: 480px){
    #mobile { display: block; }
    #desktop { display: none; }
}