HTML5 - Wikipedia
https://en.wikipedia.org/wiki/HTML5
HTML5 is a markup language used for structuring and presenting content on the World Wide Web. It is the fifth and last major HTML version that is a World Wide Web Consortium (W3C) recommendation.
HTML5: What's New in The Latest Version of HTML?
https://html.com/html5/
HTML5 is the latest specification of the HTML language, and represented a major break with All HTML5 documents should begin with a tag that indicated the document is, in fact, supposed to be...
HTML Style Guide and Coding Conventions
https://www.w3schools.com/html/html5_syntax.asp
A consistent, clean, and tidy HTML code makes it easier for others to read and understand your code. Here are some guidelines and tips for creating good HTML code. Always Declare Document Type.
html5 (@html5) | Твиттер
https://twitter.com/html5
Последние твиты от html5 (@html5). Staging the plaguing of the raised platform. World Wide Web.
HTML5
https://dev.w3.org/html5/spec-LC/Overview.html
HTML5. A vocabulary and associated APIs for HTML and XHTML. W3C Working Draft 24 May 2011.