Developer rebuilds Doom using CSS and HTML, turning divs into a full 3D game engine

Leenheer is best known for creating HTML5test.com, the WhichBrowser user-agent parser. He began exploring a CSS-based Doom ...
Search Engine Roundtable

Google: Keep Important Content Out Of Before Or After CSS Pseudo-Elements

Google posted on Twitter "we recommend not adding meaningful content or symbols using ::before or ::after CSS pseudo-elements." Google said such content "might not be used for indexing your pages." ...