HTML & Document Semantics
Meaning and structure of documents — the layer accessibility and SEO build on.
Part: 01 · Core Languages · Priority: Critical
Taxonomy
Second-level groups and their articles. Each article is a standalone entry following the template; its filename is the kebab-case form of the title.
Document Structure
- The Document Outline
- Sectioning & Landmarks
- Headings Hierarchy
- Tables & Data Semantics
Interactive Elements
- Native Form Controls
- Buttons, Links & Actions
- Dialog, Details & Popover
- The Contenteditable Model
Embedded Content
- Responsive Images (srcset)
- Audio & Video
- Iframes & Embedding
- Inline SVG
Metadata & Discovery
- Head Metadata
- SEO Semantics
- Open Graph & Social Cards
- Structured Data (JSON-LD)
Index only. One canonical home per concept — overlapping ideas are owned here and cross-linked from other domains, never duplicated.