HTML

Structure, semantics, forms, images and accessibility — the foundation of every page.

1. 1Structure and semanticsThe document skeleton and the tags that describe content.
2. 2FormsInputs, labels and validation without JavaScript.
3. 3Images and mediaA proper img, srcset and sizes, picture and formats, SVG, video.
4. 4AccessibilityAlt text, labels, keyboard and ARIA — only as much as needed.