Simple.css is a classless CSS framework that makes semantic HTML look good, really quickly. By classless it means that there are no CSS classes anywhere in the CSS or the HTML. So your website can look just like this using plain old vanilla HTML.

HTML Reference.io is a free guide to HTML. It features all elements and attributes.

Ire Aderinokun presents in this article her solution to resetting some default browser styles, she also includes some utilities that she wants in every project.