Lesson 01 · HTML & CSS
HTML & CSS Fundamentals: Structure & Semantics
What HTML is for, how the document skeleton fits together, and why choosing the right element - headings, lists, semantic landmarks - serves every reader.
Learning objectives
By the end of this lesson, you will be able to:
- Write a complete HTML document skeleton from memory
- Build a heading hierarchy that outlines a page without gaps
- Choose between ul, ol, strong and em based on meaning, not looks
- Structure a page with header, nav, main, article, section and footer
- Explain what semantic markup offers browsers, screen readers and search engines