index.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <title>Elm Google Realtime Demo</title>

    <!-- Load the Realtime JavaScript library -->
    <script src="https://apis.google.com/js/api.js"></script>

    <script src="src/bundle.js"></script>
    <script src="src/elm-gapi.js"></script>
<!--     <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous"> -->
    <link rel="stylesheet" href="style.css">
  </head>
  <body>
    <div id="app" style="width: 100%"></div>

    <script>
      var app = Elm.Main.embed(document.getElementById("app"));
      elmGapi(app);
    </script>
</body>
</html>