Kilotest: Diagnoses of z-index not zero violation by HTML element 150 on Sightline Institute page

Here is how tools diagnose the z-index not zero issue for HTML element 150 of the Sightline Institute page.

Basics

• About the z-index not zero issue
  • Why it matters: User cannot predict the effect of clicking
  • Priority: lowest
  • Related WCAG standard: 1.4
• About the Sightline Institute page
  • URL: https://www.sightline.org/
  • Tested on 2026-04-03 at 04:04
• About HTML element 150
  • Take me there
  • Tag name: UL
  • Text: Funding + Financials … Ways to Support Us
  • Start tag: <ul class="sub-menu" id="menu-item-98261-sub-menu">
  • XPath: /html/body/header[1]/div[1]/nav[2]/div[1]/div[2]/ul[1]/li[3]/ul[1]
  • Bounding box: x = -99144, y = 75, width = 200, height = 0

Diagnoses

1. z-index style property of the element is 99999

   Tool: Testaro (CVS Health)

   Rule: zIndex