There have been plenty of blog posts touting the reasons to use Sass as a CSS preprocessor, and if you've been doing responsive design for a while, you're probably already using the Breakpoint gem with Sass. But there are many ways to use both of these tools, so let's talk about using breakpoints effectively. 

Start with the small screen first, then expand until it looks like sh*t. Time for a breakpoint!- Stephen Hay.