JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE HTML>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title></title>
  <style type="text/css">
    body {
      // webkit
      -webkit-user-select: none;
      // mozilla
      -moz-user-select: none;
    }
  </style>
</head>
<body>
  <p>
    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Mauris odio tortor, fringilla quis pulvinar in, euismod eu metus. Aenean vestibulum ligula id ipsum convallis pulvinar.
  </p>
  <form action="">
    <p>
      <label for="">Foo</label>
      <input type="text" />
    </p>
    <p>
      <label for="">Bar</label>
      <input type="text" />
    </p>
  </form>
  <script type="text/javascript">
    // IE
    document.onselectstart = function() {
      return false;
    }
  </script>
</body>
</html>