<style>
  * {
    box-sizing: border-box;
  }
</style>

<style id="style"></style>

<div>
  <h2>DOM Node</h2>
  <div id="dom-node"></div>
</div>

<div>
  <h2>Captured Image</h2>
  <canvas id="canvas"></canvas>
</div>

<div>
  <h2>Reference Image</h2>
  <img id="ref-image" />
</div>
