Kilotest: Diagnoses of z-index not zero violation by HTML element 895 on Virtual Science Teachers page

Basics

About the page

• URL: https://virtualscienceteachers.org/
• Tested 2 days ago on 2026-10-07 at 23:08 by job 261007T2305-1s9
• Summary of results:
  • Rule engines:
    • Called: 12
    • Were able to test: 12
    • Reported any rule violations: 12
  • Violations: 1118
  • Violators: 496
  • Issues: 47
• 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: 16
• Violators: 16

About the violator

• Tag name: SPAN
• Text: "My students are very engaged while completing these activities. There's less non-academic talking and more on task communication among students." … Middle School Teacher
• Start tag: <span class="swiper-notification" aria-live="assertive" aria-atomic="true">
• XPath: [not obtained]
• Bounding box: x = 577, y = 3063, width = 0, height = 0
• Reported by Testaro

Diagnoses

Here is how rule engines diagnose the z-index not zero issue for HTML element 895 of the Virtual Science Teachers page.

1. z-index style property of the element is -1000

   Rule engine: Testaro (CVS Health)

   Rule: zIndex