Kilotest: Diagnoses of z-index not zero violation by HTML element 47 on World Wide Web Consortium page

Basics

About the World Wide Web Consortium page

• URL: https://www.w3.org/
• Tested 28 days ago by job j59 on 2026-05-04 at 17:00

About HTML element 47

• Tag name: NAV
• Text: Visit the W3C homepage … Sign in
• Start tag: <nav id="global-nav" aria-label="Main">
• XPath: /html/body/div[1]/div[1]/header[1]/nav[2]
• Bounding box: x = 0, y = 44, width = 1920, height = 179

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 47 of the World Wide Web Consortium page.

1. z-index style property of the element is 2

   Tool: Testaro (CVS Health)

   Rule: zIndex