Is your site ready for the mobile web? Are you sure? Go ahead, check it on your phone, and your kid's phone, and a tablet, and some Android dealies, and a Bleakberry. And a TV or two. I'll wait. That was an eye-opener, right? Web design and front end development has never been more complex than it is now, and it's likely to get worse before it gets better. Should you design your site "Mobile First"? How about "Adaptive" or "Responsive"? What's the difference between those again? I want to talk about why you might want to choose these approaches to your project. CSS is also not really up to the task of managing all this complexity. Sure, it *can* do it, but pure CSS strains almost to the breaking point under the pressure. So let's welcome Sass to the party. Sass is a CSS preprocessor that gives CSS authors the tools we've been aching for in creating and managing large and complex CSS projects. We'll cover a few of the Sass basics, but the real value here is in the more sophisticated tools that let you manage all the moving parts necessary in creating all this new-fangled wizardry. We'll cover: - Mobile First - Adaptive Design - Responsive Design - Stand-alone mobile options - Sass - Mobile-focused tools - Compass - Survival Kit - Susy