title: Best way to do a split pane in HTML
body: <p>Is there a good technique to make a resizable split pane in HTML?</p>
  <p>May it be done using CSS / jQuery / JavaScript or is there a good JavaScript library that have been used?</p>
  <p>(An example of a split pane is the favorites bar in <a href="https://en.wikipedia.org/wiki/Internet_Explorer" rel="noreferrer">Internet Explorer</a> which you may have docked to the left of your main browser window.)</p>