data/login-iframe.html

<!DOCTYPE html>
<html>
  <head>
    <title>login</title>
    <script src="https://login.persona.org/include.js"></script>
    <script src="/data/logging.js"></script>
    <script src="/data/channels.js"></script>
    <script src="/data/login-iframe.js"></script>
    <style>
      body {
        margin: 0
      }
    </style>
  </head>
  <body>
    <a href="#" id="login"><img src="https://developer.mozilla.org/files/3967/plain_sign_in_black.png"></a>
  </body>
</html>