index.html

<html>
  <head>
    <style>body {opacity: 0}</style><noscript><style>body {opacity: 1}</style></noscript>
    <script async src="https://cdn.ampproject.org/v0.js"></script>
    <script async custom-element="amp-youtube" src="https://cdn.ampproject.org/v0/amp-youtube-0.1.js"></script>
    <script async custom-element="amp-facebook" src="https://cdn.ampproject.org/v0/amp-facebook-0.1.js"></script>
    <script async custom-element="amp-twitter" src="https://cdn.ampproject.org/v0/amp-twitter-0.1.js"></script>
    <script async custom-element="amp-vine" src="https://cdn.ampproject.org/v0/amp-vine-0.1.js"></script>
    <script async custom-element="amp-instagram" src="https://cdn.ampproject.org/v0/amp-instagram-0.1.js"></script>
  </head>
  <body>
    {{body}}
  </body>
</html>