HTML Content & Structure
intermediateWhat You'll Learn
Theory
Well-structured HTML is the foundation of accessible, SEO-friendly websites. Semantic markup helps browsers, screen readers, and search engines understand your content.
Semantic Structure
HTML5 introduced semantic elements that describe their purpose: <header>, <nav>, <main>, <section>, <article>, <aside>, and <footer>. These replace generic <div> containers and make your code self-documenting.
Content Organization
Organize content hierarchically: use one <h1> per page, followed by <h2> for sections, <h3> for subsections, and so on. Never skip heading levels. Group related content in <section> or <article> elements.
Importance of Proper Markup
Proper markup improves accessibility (screen readers navigate semantic elements), SEO (search engines rank well-structured content higher), and maintainability (other developers understand your code faster).
Why this matters
Semantic HTML is the backbone of accessible and SEO-optimized websites. Screen readers, search engines, and developers all benefit when your markup clearly describes the purpose of each section.
What's next
In the next lessons, you'll dive deeper into each topic with hands-on examples and exercises.
Exercises
Structure a Blog Page
Create an HTML page with a header (site title + nav with 2 links), a main area with an article (2 sections), an aside, and a footer.
Expected Output:
A blog page with a header, navigation, article with two sections, sidebar aside, and footer.