Building a website? Looking to improve your html and css skills and not look like a fool? This is my list of HTML5 & CSSs No No’s, Tips for Maintainability, Now don’t get me wrong, if the job gets done and the client is happy you did well. What I’m talking about in this article is if any other competent developer sees you going against these guidelines you will be judged. These so happen to also be a list of my pet peeves and usually makes me want to punch small children. Anyway lets get started!