base.html

<!doctype html>
<html ⚡ lang="en">
  <head>
    <meta charset="utf-8">
    <title>Ads in AMP</title>
    <link rel="canonical" href="#"/>
    <meta name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1">
    <style>body {opacity: 0}</style><noscript><style>body {opacity: 1}</style></noscript>
    <script async src="https://cdn.ampproject.org/v0.js"></script>
  </head>
  <body>
    <h1></h1>
    
  </body>
</html>