Kilotest: Diagnoses of z-index not zero violation by HTML element 137 on Sightline Institute page

Basics

About the Sightline Institute page

• URL: https://www.sightline.org/
• Tested 29 days ago by job wxv on 2026-05-03 at 17:04

About HTML element 137

• Tag name: UL
• Text: Climate + Energy … Housing + Cities
• Start tag: <ul class="sub-menu" id="menu-item-100995-sub-menu">
• XPath: /html/body/header[1]/div[1]/nav[2]/div[1]/div[2]/ul[1]/li[1]/ul[1]
• Bounding box: x = -99374, y = 75, width = 200, height = 0

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 137 of the Sightline Institute page.

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

   Tool: Testaro (CVS Health)

   Rule: zIndex