This course aims at teaching how to use relative units and media queries in a website to make it viewable across different sized devices. A good question to ask is, "Why should I try and learn responsive design"? A responsive website will set your site apart from the rest of the sites that are out there. If your site is not accessible throughout all devices, you may be missing out on views to your site by giving visitors a less than pleasing experience. In this course (and for the rest of your web developing life) it will be your responsibility to ensure a sites legibility and visual appeal accross a variety of devices.