Kilotest: Diagnoses of aria attribute invalid violation by HTML element 271 on Oregon Museum of Science and Industry page

Basics

About the Oregon Museum of Science and Industry page

• URL: https://omsi.edu/
• Tested 20 days ago by job 42w on 2026-05-12 at 23:14

About HTML element 271

• Tag name: UL
• Text: The Museum … Support OMSI
• Start tag: <ul class="nav-menu" aria-expanded="false">
• XPath: /html/body/header[1]/div[2]/nav[1]/ul[1]
• Bounding box: x = 1078, y = 109, width = 716, height = 104

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 271 of the Oregon Museum of Science and Industry page.

1. The attribute is not allowed for the element on which it is specified

   Tool: Alfa (Siteimprove)

   Rule: r18

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

   Tool: QualWeb (University of Lisbon)

   Rule: QW-ACT-R25