Accessible headings

Ensure that every webpage has an H1 heading, and use H2 through H6 headings to further define the structure of the webpage.

For Tridion Sites-based websites, your webpage design should reflect the hierarchy of its contents:
Titles of Components
If your webpage displays one Component, make the page title identical to the Component title, and give it an H1 heading.
If your webpage displays multiple Components, use an H1 heading for the entire page, and H2 headings for the titles of the Components.
Headings within Components
If your Component is based on a Schema that defines headings (possibly on multiple levels) for various parts of the Component, ensure that headings are numbered hierarchically, continuing the heading levels introduced by the page and its Component(s).
For example, imagine that your page contains multiple Components, and that one of those Components has a multivalue embedded "Section" field consisting of a heading and a body, with three values (sections). In this scenario, the page title would be H1, the Component title would be H2, and the section headings would be H3.
It's also possible that the Component is based on a Schema that lets authors format content themselves in a Format Area field. If so, check if such a field contains headings (possibly on multiple levels) and assign correct header tags to these headings in the same way as above.

Each webpage must have at least one H1 heading, and no heading levels should be skipped.