Kilotest: Diagnoses of page content moves spontaneously violation by HTML element 121 on Mozilla Foundation page

Basics

About the page

• URL: https://www.mozilla.org/en-US/
• Tested 32 days ago on 2026-09-08 at 04:02 by job 260908T0359-xmh
• Summary of results:
  • Rule engines:
    • Called: 12
    • Were able to test: 12
    • Reported any rule violations: 11
  • Violations: 753
  • Violators: 192
  • Issues: 47
• Download the full technical report (JSON)

About the issue

• Why it matters: Motion-sensitive user may suffer harm
• Priority: low
• Related WCAG standard: 2.2.2
• Reported by 1 rule engine (Testaro)
• Violations: 1
• Violators: 1

About the violator

• Tag name: BODY
• Text: [not applicable]
• Start tag: <body id="home" class="html-ltr lang-en-US">
• XPath: /html/body
• Bounding box: x = 0, y = 0, width = 1920, height = 7995
• Reported by Testaro

Diagnoses

Here is how rule engines diagnose the page content moves spontaneously issue for HTML element 121 of the Mozilla Foundation page.

1. Content changes spontaneously (0% of pixels changed)

   Rule engine: Testaro (CVS Health)

   Rule: motion