MDN Web Docs
MDN Web Docs is Mozilla's official documentation hub for web technologies. It's free, thorough, and written by the web community. MDN's Learn Web Development curriculum provides structured, beginner-friendly guides to HTML, CSS, JavaScript, and web standards. No login and no paywall, just open-source documentation with working examples.
All MDN Web Docs Courses (1)
Mozilla's official free CSS curriculum from the Learn Web Development section. Covers CSS syntax, selectors, the box model, color, typography, flexbox, grid, responsive design, and troubleshooting. Taught through structured reading with inline code examples, making it ideal for learners who prefer documentation-style, reference-based learning over traditional video instruction. No certificate on completion, no projects, and requires basic HTML knowledge from a prior course.