Kilotest: Diagnoses of aria attribute invalid violation by HTML element 205 on Mozilla Foundation page

Basics

About the Mozilla Foundation page

• URL: https://www.mozilla.org/en-US/
• Tested 30 days ago by job 9wj on 2026-05-03 at 04:32

About HTML element 205

• Tag name: A
• Text: About us
• Start tag: <a class="m24-c-menu-title" href="/en-US/about/" aria-haspopup="true" aria-controls="m24-c-menu-panel-about" data-testid="m24-navigation-link-about-us" aria-expanded="false">
• XPath: /html/body/nav[1]/div[1]/div[1]/div[1]/div[1]/div[1]/ul[1]/li[2]/a[1]
• Bounding box: x = 985, y = 16, width = 78, height = 23

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 205 of the Mozilla Foundation page.

1. ARIA attributes must conform to valid values; Unable to determine if aria-controls referenced ID exists on the page while using aria-haspopup: aria-controls="m24-c-menu-panel-about"

   Tool: Axe (Deque)

   Rule: aria-valid-attr-value