Keeping Up with HTML

HTML grows a little every few months, so learn where its rules are written, how MDN and Baseline tell you whether a feature works in every browser, and how to use a new feature without leaving anyone behind.

Updated

Codey's cheat sheet for Keeping Up with HTML: HTML grows a little every few months, so learn where its rules are written, how MDN and Baseline tell you whether a feature works in every browser, and how to use a new feature without leaving anyone behind.
Category
HTML
Level
Journeyman
Tags
Baseline, html, Obsolete feature, Progressive Enhancement