title: What's the difference between `HTMLElement` and `Element`?
body: <p>What's the difference between <code>HTMLElement</code> and <code>Element</code> ?</p>
  
  <p><code>document.createElement("div") instanceof Element</code> gives true</p>
  
  <p><code>document.createElement("div") instanceof HTMLElement</code> gives true</p>
  
  <p><code>HTMLElement === Element</code> gives false</p>