Page Title: PG SLOT 999 PGSLOT.ORG
July 25, 2021 07:38

complementary landmark: must be top level


Severity Action
no actions


Rule ID Landmark 19
Definition The complementary landmark must be a top-level landmark.
  • complementary landmarks provide a way to identify sections of a page that may not be considered the main content, but that provide important supporting or related information to the main content.
  • Top-level landmarks are the easiest to find and navigate to using assistive technologies.
WCAG Success Criteria

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

Rule Category Landmarks
Scope Element
Target Resources complementary landmark
  • aside
  • Use an aside element to define a complementary landmark.
  • If the aside element technique is not being used, a role="complementary" attribute on the container element of the supporting content can be used to define a complementary landmark.
  • When creating the landmark structure on the page, ensure that the complementary landmark is a top-level landmark (i.e., it is not contained within any other landmarks).
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.