Before starting Section 4, make sure you can:
- Recognize an element, its tags, and its attributes.
- Identify void elements and avoid adding closing tags to them.
- Write attributes with quoted values.
- Explain how Boolean attributes work.
- Correct mismatched tags and invalid nesting.
- Use IDs and classes appropriately.
- Inspect the DOM and validate your markup.
Next section: Section 4 — Headings, Paragraphs, Text Formatting and Quotations.
End of Section 3 — Codementrix HTML5 Mastery.