square moving towards the left of the screen created by joining triangles on a red background.
</p>

<canvas id="canvas-shape" height="600px" width="1400px">
  Your browser doesn't appear to support the HTML5 canvas element.
</canvas>

<div id="output">
</div>

<h2>Basic triangle</h2>

<p>
  You should see a pulsating blue triangle on a red background.
</p>

<canvas id="canvas-triangle" height="600px" width="1400px">
  Your browser doesn't appear to support the HTML5 canvas element.
</canvas>

<h2>Main bann