HTML| html.spec.whatwg.org
A deep dive into the semantics, behaviours and characteristics of some of the most common user interface elements of websites today.| Hidde's blog
Normalize.css makes browsers render all elements more consistently and in line with modern standards. It precisely targets only the styles that need normalizing.| necolas.github.io
The Popover API provides developers with a standard, consistent, flexible mechanism for displaying popover content on top of other page content. Popover content can be controlled either declaratively using HTML attributes, or via JavaScript.| MDN Web Docs
HTML| html.spec.whatwg.org
HTML| html.spec.whatwg.org
This document is a practical guide for developers on how to add accessibility information to HTML elements using the Accessible Rich Internet Applications specification [WAI-ARIA-1.1], which defines a way to make Web content and Web applications more accessible to people with disabilities. This document demonstrates how to use WAI-ARIA in [HTML51], which especially helps with dynamic content and advanced user interface controls developed with Ajax, HTML, JavaScript, and related technologies.| www.w3.org
ARIA semantics that extend and diverge from HTML| w3c.github.io