title: Is there a way to make a scrolling "viewport" box in HTML5/CSS?
body: <p>Consider i have a div with content in it, but i only want to show a part of it. Specifically the part that overlaps with another div. How would I go about making that happen?</p>
  
  <p>I also want to animate my content div so that it's actually scrolling, whilst the smaller div acts as a "window" or "viewport" to it.</p>