index.html

<!DOCTYPE html>
<html>
  <head>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="/style/style.css">
    <link rel="stylesheet" href="https://cdn.rawgit.com/twbs/bootstrap/48938155eb24b4ccdde09426066869504c6dab3c/dist/css/bootstrap.min.css">
    <script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyBtDIBVmD0-yUh4hoC-qgToqSEOgbzzriQ"></script>
       <style>
      /* Always set the map height explicitly to define the size of the div
       * element that contains the map. */
      #map {
        height: 500px;
        margin-top: 60px
      }
      /* Optional: Makes the sample page fill the window. */
     
    </style>
  </head>
  <body>
    <div class="container"></div>
  </body>
  <script src="/bundle.js"></script>
</html>