Kilotest: Diagnoses of heading structure illogical violation by HTML element 124 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: Helper misdescribes the page
• Priority: low
• Related WCAG standard: 1.3.1
• Reported by 2 rule engines (ASLint + HTML CodeSniffer)
• Violations: 3
• Violators: 2

About the violator

• Tag name: DIV
• Text: Help us improve your Mozilla experience … Cookie settings
• Start tag: <div class="moz-consent-banner-content">
• XPath: /html/body/aside[1]/div[1]
• Bounding box: [not obtained]
• Reported by ASLint

Take me there

Diagnoses

Here is how rule engines diagnose the heading structure illogical issue for HTML element 124 of the Mozilla Foundation page.

1. Expected <code><h2 class="moz-consent-banner-heading">Help us improve your Mozilla experience</h2></code> to be <code><h1></code>

   Rule engine: ASLint (eSSENTIAL Accessibility)

   Rule: headings_hierarchy