Kilotest: Diagnoses of aria attribute invalid violation by HTML element 273 on Sightline Institute page

Here is how tools diagnose the aria attribute invalid issue for HTML element 273 of the Sightline Institute page.

Basics

• About the aria attribute invalid issue
  • Why it matters: Item behavior violates user expectations
  • Priority: highest
  • Related WCAG standard: 4.1.2
• About the Sightline Institute page
  • URL: https://www.sightline.org/
  • Tested on 2026-04-03 at 04:04
• About HTML element 273
  • Take me there
  • Tag name: DIV
  • Text: Climate + Energy … …
  • Start tag: <div class="gb-container gb-container-d6497016 gb-tabs__item gb-tabs__item-open" id="gb-tab-item-d6497016" aria-labelledby="gb-tab-button-97ae4ddd">
  • XPath: [not obtained]
  • Bounding box: x = 424, y = 1260, width = 1072, height = 1225

Diagnoses

1. Tool: Alfa (Siteimprove)

   Rule: r18

2. [failed] The `aria-labelledby` property is neither inherited nor supported by the `role` generic.

   Tool: QualWeb (University of Lisbon)

   Rule: QW-ACT-R25