<!DOCTYPE html>
<html>
  <head>
    <title>Hello World!</title>
    <style>
      html, body, * {
        background: transparent;
      }
    </style>
  </head>
  <body>
    <h1>Hello World!</h1>
    We are using io.js <script>document.write(process.version)</script>
    and Electron <script>document.write(process.versions['electron'])</script>.
  </body>
</html>