I have a website hosted on Github Pages, using Jekyl with the Lanyon theme. However, no matter how I fiddle with the CSS, I can't seem to get the code blocks to have a horizontal scroll bar. By default they wrap, and I was able to get the text to extend beyond the box, but I can't get a scroll bar.
The first code block on this page has several lines that wrap: http://nicktobey.me/2015/07/29/monads/
I tried every suggestion at How to support scrolling when using pygments with Jekyll, but none of them worked.