Kilotest: Diagnoses of aria attribute invalid violation by HTML element 275 on Sightline Institute page

Basics

About the Sightline Institute page

• URL: https://www.sightline.org/
• Tested 29 days ago by job wxv on 2026-05-03 at 17:04

About HTML element 275

• Tag name: DIV
• Text: Housing + Cities … …
• 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 = 1247

Take me there

About the aria attribute invalid issue

• Why it matters: Item behavior violates user expectations
• Priority: highest
• Related WCAG standard: 4.1.2

Diagnoses

Here is how tools diagnose the aria attribute invalid issue for HTML element 275 of the Sightline Institute page.

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