<div class="row">
  <canvas hex-board hidpi="off" style="background-color: black; width:100%; height:100%">
</div>


<div class="row">
  <canvas hex-board hidpi="off" style="background-color: black; width:100%; height:100%; position: absolute; left: 0px;top: 0px; z-index: -1;">
</div>


Make the demo canvas take up the whole screen
Make the demo canvas take up the whole screen
