HTML.com allows both stripes and skill ranges of web developers to craft the best available HTML and CSS.
HTML.com provides coders with detailed, easy-to-use references packed with tips, tricks, and methods, but the amount of knowledge accessible to today's developer can be daunting.
They aim to be better than the standard offers of developer documentation. They have data on where and when something can be used in addition to teaching you how to do something. They don't just say you know anything about HTML now.
With the improvements spurred by HTML5, don't get left out. Know the right way to do something, figure out what is old now, and what other browsers have discontinued.
With their up-to-date material, they help you distinguish the wheat from the chaff, code stuff correctly the first time, and keep on hanging on.