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August 02, 2021 23:16

Headings nested in landmarks

Actions

Severity Action
Violation Review the heading structure for each landmark with more than one heading, and adjust the heading levels in each landmark such that all headings are properly nested.
Hidden If any of the 11 hidden heading elements are supposed to be visible to assistive technologies, style them to be positioned off-screen.

Details

Rule ID Heading 8
Definition Headings must be properly nested within a landmark.
Purpose
  • Headings provide a way to indicate the structure and to label the sections of content within a landmark.
  • Headings and there associated heading levels provide a way for people using assistive technology to understand and navigate the structure of the content within a landmark.
WCAG Success Criteria

1.3.1 Info and Relationships (Level A, Primary Success Criterion)

Rule Category Headings
Scope Element
Target Resources Landmark elements
  • h1
  • h2
  • h3
  • h4
  • h5
  • h6
Techniques
  • Use an h1 element for the first heading in main landmarks.
  • Use an h2 element for the first heading in other top level landmarks.
  • Use heading elements to identify the content of each section within a landmark.
  • Properly nest of heading elements within a landmark (e.g. h2 follows h1 headings, h3 follows h2 headings, ...).
Informational Links

Element Results

Element Identifier Result Element Position Message

Column Definitions

Element Identifier
Information about the element associated with the result.
The information typically includes the tag name, accessible name or other information related to the rule requirements.
"Page" means that the result applied to the page. For example, the rule "One main landmark on the page" is a page level rule.
Element Position
The element position is based on the DOM order of elements in the page.
The element position maybe useful in helping to locate a specific element on the page evaluated (e.g smaller numbers are typically toward the beginning of a page and larger numbers typically toward the end of a page).
Element position 1 is the first element.
The highest element position is the last element.
Element position values for most rule/page results will not be consecutive since a rule only applies to a sub set of elements found on a page.