Kilotest: Diagnoses of box size absolute violation by HTML element 284 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: User cannot enlarge the content of an item for readability
• Priority: high
• Related WCAG standard: 1.4.4
• Reported by 1 rule engine (QualWeb)
• Violations: 14
• Violators: 14

About the violator

• Tag name: svg
• Text: [not applicable]
• Start tag: <svg class="m24-c-flag-media-animation-frame" aria-hidden="true" focusable="false" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 310 380" width="310" height="380">
• XPath: /html/body/div[2]/main[1]/div[1]/section[1]/div[2]/svg[2]/svg[3]
• Bounding box: x = 1316, y = 252, width = 216, height = 265
• Reported by QualWeb

Diagnoses

Here is how rule engines diagnose the box size absolute issue for HTML element 284 of the Mozilla Foundation page.

1. [failed] The test target `width` attribute uses absolute units.

   Rule engine: QualWeb (University of Lisbon)

   Rule: QW-BP15