Kilotest: Diagnoses of z-index not zero violation by HTML element 204 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 204

• Tag name: LI
• Text: About us
• Start tag: <li class="m24-c-menu-category mzp-has-drop-down mzp-js-expandable">
• XPath: /html/body/nav[1]/div[1]/div[1]/div[1]/div[1]/div[1]/ul[1]/li[2]
• Bounding box: x = 961, y = 16, width = 126, height = 39

Take me there

About the z-index not zero issue

• Why it matters: User cannot predict the effect of clicking
• Priority: lowest
• Related WCAG standard: 1.4

Diagnoses

Here is how tools diagnose the z-index not zero issue for HTML element 204 of the Mozilla Foundation page.

1. z-index style property of the element is 1000

   Tool: Testaro (CVS Health)

   Rule: zIndex