<!DOCTYPE HTML>
<html>
  <head>
    <meta charset="utf-8">
  </head>
<body>
  <h1 id="h1">Accessibility Test</h1>
  <button id="button" aria-describedby="h1" accesskey="b">Accessible Button</button>
  <div id="slider" role="slider" aria-valuenow="5"
       aria-valuemin="0" aria-valuemax="7">slider</div>
  <label id="label" for="control">Label
    <input id="control">
  </label>
  <header id="header">header</header>
  <nav id="nav">nav</nav>
  <footer id="footer">footer</footer>
</body>
</html>
