'css/common.css'>

    <title>Immersive Viewport scaling</title>
  </head>
  <body>
    <header>
      <details open>
        <summary>Viewport scaling</summary>
        <p>
          This sample demonstrates how a session can request to render to
          a smaller area of its layer. This can be used to dynamically
          lower the number of pixels that need to be rendered. This can
          help experiences that are fragment bound for a short amount
          of time.
          <a class="back" href="