This is a very high competition, relatively lower demand market than straight web app development. A single designer can build interfaces that will put a whole

This is a very high competition, relatively lower demand market than straight web app development. A single designer can build interfaces that will put a whole team of developers to work. If I'm interviewing designers and I had to choose between the better designer and one that could do reasonably good HTML/CSS, it'd be the later all the way.