JSFiddle - React, Tailwind, and code Playground

HTML

<html>
<head>
  <script src="http://code.jquery.com/jquery-latest.js"></script>
  <script type="text/javascript" src="http://jzaefferer.github.com/jquery-validation/jquery.validate.js"></script>
  <script>
  $(document).ready(function(){
    $("#carsForm").validate();
  });
  </script>
  
</head>
<body>
  

 <form class="cmxform" id="carsForm" method="get" action="">


       <select name="cars" class="required">
<option value="">Select a car</option>
           <option value="volvo">Volvo</option>
<option value="saab">Saab</option>
<option value="fiat">Fiat</option>
<option value="audi">Audi</option>
</select>
   <p>
     <input class="submit" type="submit" value="Submit"/>
   </p>
 </form>