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
42won 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
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.
- 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