examples/amp-layout.amp.html

<!doctype html>
<html ⚡ lang="en">
<head>
  <meta charset="utf-8">
  <title>amp-layout example</title>
  <link rel="canonical" href="amps.html">
  <meta name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1">
  <style amp-boilerplate>body{-webkit-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-moz-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-ms-animation:-amp-start 8s steps(1,end) 0s 1 normal both;animation:-amp-start 8s steps(1,end) 0s 1 normal both}@-webkit-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-moz-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-ms-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-o-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}</style><noscript><style amp-boilerplate>body{-webkit-animation:none;-moz-animation:none;-ms-animation:none;animation:none}</style></noscript>
  <style amp-custom>
    amp-layout {
      background-color: yellow;
    }
  </style>
  <script async src="https://cdn.ampproject.org/v0.js"></script>
</head>
<body>
  <h1>amp-layout</h1>

  <h2>responsive - 2x1 ratio</h2>
  <amp-layout layout="responsive" width="2" height="1">
    This `amp-layout` acts like a `div` that always keeps a `2x1` aspect ratio.
  </amp-layout>

  <h2>fixed - 100x100</h2>
  <amp-layout layout="fixed" width="100" height="100">
    will act like a 100px by 100px div
  </amp-layout>

  <h2>responsive - svg - 1x1 ratio </h2>
  <amp-layout layout="responsive" width="1" height="1">
    <svg viewBox="0 0 100 100">
      <circle cx="50%" cy="50%" r="40%" stroke="black" stroke-width="3" />
      Sorry, your browser does not support inline SVG.
    </svg>
  </amp-layout>

</body>
</html>