Examples of Hierarchy in a Web Structure. ... HTML provides several heading tags, such as h1, h2 and h2, that can help you add hierarchy to a Web page. For instance, ...

When Illyes was talking about HTML structure, he was likely referring to some of the things SEOs like to obsess about: The number of H1 tags on a page. The order of H tags.

H1 – H6 elements “briefly describe the topic of the section they introduce“.They form a page HTML semantic structure that can “be used by user agents, for example, to construct a table of ...