Aside is contained within main landmark

[lhenze]

The sliding panels for "about this item", "rights", and "index" use the HTML landmark <aside>.

However, aside needs to be at the top level, rather than inside main.

Impact: moderate

https://www.w3.org/WAI/ARIA/apg/practices/landmark-regions/

https://www.accessibilitychecker.org/wcag-guides/ensure-the-complementary-landmark-or-aside-is-at-the-top-level/

[jcoyne]

Alternatively, you could assign role="region" to the <aside> tag.

[lhenze]

Or use a different HTML tag for those panels -- section, or div?