When I freelanced I spent a lot of time working on web projects. I enjoy the challenges of designing responsively and tinkering with CSS & HTML. I do not miss IE6. In particular I found preprocessors like LESS and Sass refreshing and powerful.
Monzonite is a theme designed for pumping out travel blog posts. The responsive layout degrades gracefully when viewed on a tablet or even on a mobile device. The typography styling and animations were all done with CSS3.