Kilotest: Diagnoses of z-index not zero violation by HTML element 116 on Clean Air Task Force (CATF) page

Basics

About the page

• URL: https://www.catf.us/
• Tested 3 days ago on 2026-10-07 at 19:52 by job 261007T1941-eso
• Summary of results:
  • Rule engines:
    • Called: 12
    • Were able to test: 12
    • Reported any rule violations: 12
  • Violations: 697
  • Violators: 328
  • Issues: 52
• Download the full technical report (JSON)

About the issue

• Why it matters: User cannot predict the effect of clicking
• Priority: lowest
• Related WCAG standard: 1.4
• Reported by 1 rule engine (Testaro)
• Violations: 24
• Violators: 24

About the violator

• Tag name: UL
• Text: About Us … Search
• Start tag: <ul id="main_nav" class="header__main-menu is-mobile-slide-down">
• XPath: /html/body/header[1]/div[1]/div[1]/nav[1]/div[1]/ul[1]
• Bounding box: x = 192, y = 45, width = 1728, height = 90
• Reported by Testaro

Take me there

Diagnoses

Here is how rule engines diagnose the z-index not zero issue for HTML element 116 of the Clean Air Task Force (CATF) page.

1. z-index style property of the element is 3

   Rule engine: Testaro (CVS Health)

   Rule: zIndex