Master the fundamental building blocks of the web from semantic document trees, landmark architecture, and accessible forms to ARIA live regions, responsive media, and SEO schema.
The Anatomy of a Modern Webpage: DOCTYPE, Viewport, Meta Directives, Charset, and Resource Hints
Structuring Accessible Documents without 'div Soup': The Hierarchy of Landmark Roles
Meaningful Text Markup: <strong> vs <b>, <em> vs <i>, <time>, <mark>, <details>, <summary>, and <dl>
Architecting Tabular Data: thead, tbody, tfoot, scope='col|row', colgroup, and ARIA Table Roles
Designing Resilient Input Controls: labels, input types, datalists, fieldsets, and legends
Client-Side Form Validation without Heavy Libraries: required, pattern, checkValidity(), and setCustomValidity()
Mastering Mobile Input: inputmode='numeric|decimal', Autocomplete Tokens, and Virtual Keyboard Ergonomics
Handling Binary Assets: <input type='file'>, accept MIME filtering, multiple, and multipart serialization
Accessible by Default: Native HTML vs ARIA Roles, Accessible Name Computation, and WCAG 2.2 Standards
Dynamic UI Accessibility: aria-expanded, aria-controls, aria-live='polite|assertive', and aria-hidden
The Foundation of Power Users: tabindex='0|-1', Skip Links, Focus Traps, and Visible Focus Rings
High-Performance Media Delivery: Resolution Switching, Art Direction, Next-Gen WebP/AVIF, and Lazy Loading
Accessible Multimedia: <video>, <audio>, WebVTT Captions with <track>, and Iframe Sandbox Security
Search Engine Optimization: Meta Directives, Social Sharing Graph, and Schema.org JSON-LD Markup
Capstone Project: Engineering a WCAG 2.2 AA Compliant Multi-Step Form with Progressive Enhancement
Staff-Level Mastery: 20 Crucial Questions Asked at FAANG on Semantics, a11y, Performance & SEO