title: What are Compass and Sass and how do they differ?
body: <p>I would like to start using Compass and Sass to speed up development. At the moment, I have installed Sass on a mac and instructed it to watch a Scss file for input, and a CSS file for generated output.</p>
  <p>From many articles, Sass is used with Compass, I'm wondering why that is the case and just what does Compass add that Sass comes without? If you can give an example, the better.</p>