Making Code-snippets easy to understand. 

Viewing Code online and giving other a chance to wrap their heads around it can be a daunting quest.
CodePen seems to be a pretty easy-to-use tool to make these sorts of things easy as pie.
This is a basic Test to embed a CodeSnippet via CodePen.

Let´s see how this works:

See the Pen basic :nth-child test by Michael (@thebiglebauski) on CodePen