HTML 5 brought a significant advancement to the markup language, along with a number of APIs that are now essential for modern web development.

HTML 5 is a huge boon for accessibility on the web, in particular with ARIA attributes being standardised, and Semantic html elements making markup more descriptive to assistive technologies.

Canvas and svg opened the floodgates for web graphics. Numerous form element types have made forms easier to develop and more accessible.

The list of APIs like fetch, localStorage, WebRTC, Web storage, GeolocationAPI and IndexDB have allowed a richer web to emerge.

I ensure HTML in my applications gets the attention it deserves, as accessible markup is often an afterthought in many projects.