index.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>Mention dev test</title>
    <link rel="stylesheet" href="style.css">
    <script src="https://use.fontawesome.com/2922e98387.js"></script>
  </head>

  <body>
    <div id="container">
      
    </div>

    <script src="libs/react.js"></script>
    <script src="libs/react-dom.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.8.24/browser.min.js"></script>
    <script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
    <script type="text/babel" src="main.js"></script>
  </body>
</html>