HTML is the markup language the web is built on, but the daily skill in 2026 is barely about syntax. Every framework emits HTML; what separates competent frontend work from sloppy work is using the right semantic element, building accessible forms, and writing markup that screen readers, search engines, and assistive technology can navigate without help.
The HTML5 spec brought a long list of elements that most developers still underuse: <dialog>, <details>, <summary>, <output>, <progress>, <meter>, plus form input types like email, tel, date that ship native validation and mobile keyboard hints for free. Knowing them well is faster than recreating them with div + JavaScript.
What you'll work with in these 22 courses
- Semantic structure:
main,article,section, landmark elements - Forms and accessibility: labels, ARIA when really needed, keyboard navigation
- HTML5 elements:
dialog,details,picture, native inputs - SEO basics: meta tags, structured data, Open Graph, sitemaps
- Web Components and custom elements
- Email HTML: tables, inline styles, MJML for compatibility
