<html>
<head>
  <title>Servant: counter</title>
  <style>
  body { text-align: center; }
  #counter { color: green; }
  #inc { margin: 0px 20px; background-color: green; color: white; }
  </style>
</head>
<body>

<iframe src="vanilla/" width="80%" height="25%"></iframe>
<iframe src="jquery/" width="80%" height="25%"></iframe>
<iframe src="angular/" width="80%" height="25%"></iframe>
<iframe src="angular/service.html" width="80%" height="25%"></iframe>
</body>
</html>