title: Scroll windows for code in iPython (Jupyter) Notebooks?
body: <p>Is there a way to display large blocks of code in an iPython notebook in a scroll window?</p>
  
  <p>I have a notebook where the focus is on graphical output of the code and comments in the markdown text. I want to be able to execute the code in the notebook and have it available to the reader, but many of the code blocks are very lengthy. A scroll window would make a notebook much cleaner and more concise, allowing readers the option of moving past large code blocks.</p>