title: Importing separate html assets from external file
body: <p>Let's say I have an html page (assets.html)  that has a few custom elements like buttons on it. The buttons are composed of html/css and an image.</p>
  
  <p>Is it possible to import "assets.html" and 'grab' the button and clone/copy it and place it into the page that accessed assets.html?</p>
  
  <p>I want to be able to have a page that has a lot of interface components, be able to load that page and grab any component I want from it.</p>
  
  <p>Is it possible? What method would guarantee the css and image would be preserved with the imported html?</p>