<html>
  <head>
    <title>Full Screen Canvas</title>

    <script type="module" crossorigin src="a.js"></script>
    <link rel="stylesheet" crossorigin href="a.css">
  </head>
  <body>
    <canvas id="canvas"></canvas>
    <img id="flip" src="a.png" alt="Switch Camera" />

  </body>
</html>