Developer Cheat Sheets

Complete HTML5 reference — all tags, attributes, semantic elements, forms, tables, and media tags.

CSS selectors, properties, flexbox, grid, animations, media queries, and custom properties reference.

ES6+ syntax, array & object methods, DOM manipulation, async/await, promises, and common patterns.

Types, interfaces, generics, enums, utility types, decorators, and TypeScript configuration reference.

App Router, Pages Router, routing, data fetching, API routes, middleware, and deployment reference.

Bootstrap 5 grid system, utility classes, components, breakpoints, and layout helpers reference.

Every Tailwind utility class organised by category — spacing, typography, colours, flexbox, grid, and more.

Design principles, colour theory, typography rules, accessibility guidelines, and common UI patterns.