Kilotest: Diagnoses of 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 attribute invalid issue

• Why it matters: Item behaves improperly
• Priority: highest
• Related WCAG standard: 1.3.1

Diagnoses

Here is how tools diagnose the attribute invalid issue for HTML element 271 of the Oregon Museum of Science and Industry page.

1. The ARIA attributes "aria-expanded" are not valid for the element <ul> with implicit ARIA role "list"

   Tool: Accessibility Checker (IBM)

   Rule: aria_attribute_valid