title: How to keep position of scrollbar with JavaScript?
body: <p>There are a lot of pdf pages that is wrapped by div in a page. When they were zoomed by increasing div's width and height, scrollbar lose its position.</p>
  <p>How can I fix it like <strong><a href="https://mozilla.github.io/pdf.js/web/viewer.html" rel="nofollow noreferrer">this example</a></strong>?</p>
  <p>As you see in the example, when you zoom anywhere in the page, scrollbar didn't lose its position and it acts as a sticky.</p>
  <p>What is your suggestion?</p>