<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>js13k</title>

  <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">

  <style>
    html,
    body {
      height: 100%;
    }

    body {
      display: -webkit-flex;
      display: flex;

      -webkit-align-items: center;
      align-items: center;

      -webkit-justify-content: center;
      justify-content: center;

      margin: 0;
      background-color: #000;
      overflow: hidden;
    }
  </style>
</head>
<body>

  <script src="./js/bundle.js"></script>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>js13k</title>

  <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">

  <style>
    html,
    body {
      height: 100%;
    }

    body {
      display: -webkit-flex;
      display: flex;

      -webkit-align-items: center;
      align-items: center;

      -webkit-justify-content: center;
      justify-content: center;

      margin: 0;
      background-color: #000;
      overflow: hidden;
    }

    canvas {
      outline: 1px solid #222;
    }
  </style>
</head>
<body>

  <script src="./js/bundle.js"></script>
</body>
</html>

Add outline to canvas element.
Add outline to canvas element.
