Kilotest: Diagnoses of aria attribute invalid violation by HTML element 220 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 220

• Tag name: DIV
• Text: All … Housing + Cities
• Start tag: <div class="gb-container gb-container-3cbf3052 gb-tabs__buttons" aria-orientation="horizontal">
• XPath: /html/body/div[2]/div[1]/div[1]/main[1]/article[1]/div[1]/div[1]/div[3]/div[1]/div[1]/div[1]/div[1]
• Bounding box: x = 424, y = 1196, width = 1072, height = 45

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 220 of the Sightline Institute page.

1. Elements must only use supported ARIA attributes; ARIA attribute is not allowed: aria-orientation="horizontal"

   Tool: Axe (Deque)

   Rule: aria-allowed-attr

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

   Tool: QualWeb (University of Lisbon)

   Rule: QW-ACT-R25