CodePen Embed

<div id="three"></div>

#three{
  width:400px;
  height:700px;
  background:green;
  clip-path: polygon(50% 0%, 80% 30%, 70% 30%, 90% 50%, 80% 50%, 100% 70%, 60% 70%, 60% 80%, 40% 80%, 40% 70%, 0% 70%, 20% 50%, 10% 50%, 30% 30%, 20% 30%);
}

This Pen is owned by Dag Frode on CodePen.

See more by @dagfs on CodePen

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.