This add-on is compatible with Concrete 5.5.
See this add-on in action at: http://c5extras.com/add-ons/scrollbar
Easily add a scrollbar to either a large block of text or apply it to your site's template. This add-on is very flexible and can be used in a wide variety of situations. It supports both vertical and horizontal scrollbars, and is compatible with the iPhone/iPad as well as all the major web browsers. Using this scrollbar is the perfect way to display a lot of content on your page without it looking cluttered. You can even add multiple scrollbars to the same page.