lessCSS and Object Oriented CSS

So if you read my bio, you will see that I am much more inclined to the art of programming then the art of graphic design. I can design a webpage, I can design software. I can't draw. I can manipulate Photoshop and Illustrator assets. And I recently realized that I cant create mockups, plain html mockups, because I am too busy doing the project the right way, for eventual production launch. But I was not classically trained in design. So I end up doing more work in the backend, and sometimes let my front end knowledge slip. At least that's the current feeling I am in possession of as I sit here, keying away. Why? Cause I recently had an interview with Disney Studios in Burbank, didn't get the job, and the reason was that my CSS was not bleeding edge. So I do what I usually do when I fail an interview. Recalling the event, I take notes, and rework my knowledge base to fill the gaps. Hence this post. More for me, really. I must remember to implement a project using the lessCSS framework. Or other CSS frameworks. I guess, first I should start by evaluating CSS frameworks. I had to do something similar with JS and PHP as well. Time to catch up on the CSS.