<!doctype html>
<html âš¡>
<head>
  <script async custom-element="amp-experiment" src="https://cdn.ampproject.org/v0/amp-experiment-0.1.js"></script>
  <script async src="https://cdn.ampproject.org/v0.js"></script>
  <link rel="stylesheet" href="https://cdn.ampproject.org/v0.css">
  <link href="https://fonts.googleapis.com/css?foobar" rel="stylesheet" type="text/css">
  <link href="https://example.com/favicon.ico" rel="icon">
  <style amp-custom>.another{display:block}.foo{height:0}.bar{height:auto}</sty