Kilotest: Diagnoses of z-index not zero violation by HTML element 117 on Prometheus page

Basics

About the Prometheus page

• URL: https://www.joinprometheus.org/
• Tested 29 days ago by job hzk on 2026-05-03 at 17:00

About HTML element 117

• Tag name: BUTTON
• Text: Skip to Main Content
• Start tag: <button id="SKIP_TO_CONTENT_BTN" class="SKIP_TO_CONTENT_BTN LHrbPP has-custom-focus" tabindex="0">
• XPath: /html/body/div[1]/div[1]/button[1]
• Bounding box: x = 866, y = 60, width = 48, 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 117 of the Prometheus page.

1. z-index style property of the element is 9999

   Tool: Testaro (CVS Health)

   Rule: zIndex