Responsive web design is an explosive area of growth in modern web development due to the huge volume of different device sizes and resolutions that are now commercially available. The Internet is going mobile. Desktop-only websites just aren't good enough anymore. With mobile internet usage still rising and tablets changing internet consumption habits, you need to know how to build websites that will just “work,” regardless of the devices used to access them. This Learning Path course explains all the key approaches necessary to create and maintain a modern responsive design using HTML5 and CSS3.