Responsive Web design (RWD) is a Web design approach aimed at crafting sites to provide an optimal viewing experience—easy reading and navigation with a minimum of resizing, panning, and scrolling—across a wide range of devices.
A content management system (CMS) is a computer program that allows publishing, editing and modifying content as well as maintenance from a central interface. Such systems of content management provide procedures to manage workflow in a collaborative environment.
The latest example of my work is this website. It features a responsive design, allowing consistency over many different devices, and a Wordpress content management system which makes editing the site virtually effortless. Please have a look at my other work too.