index.html

<html>

<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css" type="text/css">
  <link rel="stylesheet" href="https://pingendo.com/assets/bootstrap/bootstrap-4.0.0-alpha.6.css" type="text/css"> </head>

<body>
  <div class="py-5">
    <div class="container">
      <div class="row">
        <div class="col-md-12">
          <h1 class="display-1 text-center">Title</h1>
        </div>
      </div>
    </div>
  </div>
  <script src="https://code.jquery.com/jquery-3.1.1.slim.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js"></script>
  <script src="https://pingendo.com/assets/bootstrap/bootstrap-4.0.0-alpha.6.min.js"></script>
</body>

</html>