Designing for the web is no longer what it used to be. The number of devices with web-browsing capabilities is growing at an increasing speed. In order to deliver a solid web experience for your users, it's essential to design for these varying use cases. Enter responsive web design. In this class, you will learn the basic concepts and tools needed to design and build a mobile-first responsive web experience. Covering topics such as media-queries, progressive enhancement, setting appropriate breakpoints, and establishing a percentage-based grid — this course will get you up to speed with the basic understanding you need to get started. Get ready to throw pixels and fixed-width layouts to the wind.