Try it with pressure-sensitive tablet or phone. It's fun!
<!-- Custom Elements v1 polyfill (2.7KB gzipped) -->
<script src="https://unpkg.com/@webcomponents/custom-elements@1.0.0-alpha.3"></script><!-- Our custom element's source -->
<script src="https://unpkg.com/element-easel@1.0.5"></script><element-easel stroke="red" stroke-width="5">
<div>
My stuff
</div>
</element-easel>