JSFiddle - React, Tailwind, and code Playground

HTML

<!doctype html>  
<html>  
<head>  
  <title>Placeholder demo</title>  
  <style type="text/css">
      .test::-moz-placeholder {
        color: blue;
      }
  </style>  
</head>  
<body>  
  <input id="test" class="test" placeholder="Placeholder text!">  
</body>  
</html>