HTML

Understand what HTML does, prepare a simple editor-and-browser workflow, and publish your first document.

Learn how elements, attributes, nesting, and character references fit together, and avoid common markup mistakes.

Build a well-formed page shell and understand what belongs in the head, what belongs in the body, and how a document is identified.

Mark up headings, paragraphs, quotations, code, and meaningful phrases without using visual formatting as a substitute for meaning.

Create links that work across pages, within long documents, and between useful resources without surprising visitors.

Use ordered, unordered, and description lists to represent information that belongs together.

Add images with useful alternatives, create captions, and provide suitable sources for different viewport sizes and loading conditions.

Represent genuine row-and-column data with accessible table structure, captions, headers, and spanning cells.

Choose elements by meaning and create page structures that communicate the purpose of each region.

Build forms that collect information with native controls, clear labels, sensible names, and correct submission behavior.

Use native constraints, autocomplete, file inputs, datalists, and submission options while keeping server-side validation in place.

Embed media with captions and fallbacks, and make deliberate decisions when bringing external content into a page.

Use native semantics, labels, keyboard behavior, language information, and meaningful alternatives to make pages work for more people.

Use document metadata and loading attributes carefully so browsers, crawlers, and visitors receive the right signals.

Use built-in disclosure, dialog, popover, template, and Web Components features before building custom behavior from scratch.

Check markup with browser tools and validators, recognize obsolete patterns, and bring the course together in realistic page builds.

Prepare for practical HTML interviews with answers that explain the reasoning behind everyday markup decisions.