A page has structure before it has a layout. Native elements tell the browser which region is navigation, where the main content begins, and how headings relate to one another. That information matters when someone moves through a page by headings or landmarks. Start with the meaning of the content. A sequence of instructions belongs in an ordered list; a table needs headers that explain its cells. You'll repair small pages for fictional operations teams using the supplied fixture text. Repeated labels and changing row counts are deliberate. The markup should describe each new batch without losing its relationships.