Frontend

Building user interfaces and experiences

Filter by difficulty:

Semantic markup, accessibility, and document structure.

Selectors, box model, flexbox, and grid layouts.

Variables, functions, DOM manipulation, and ES6+ features.

Media queries, mobile-first approach, and fluid layouts.

Static typing, interfaces, generics, and type safety.

Components, hooks, state management, and virtual DOM.

Reactive declarations, stores, and compile-time optimization.

Redux, Zustand, context patterns, and global state strategies.

Vite, Webpack, module bundling, and development workflows.

Unit tests, integration tests, and end-to-end testing strategies.

WCAG guidelines, ARIA, and building inclusive experiences.