Kilotest: Violations of element obsolete issue for 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: Page includes obsolete code that the browser may fail to process
• Priority: high
• Related WCAG standard: 4.1
• Reported by 3 rule engines (Alfa + ASLint + QualWeb)
• Violations: 12
• Violators: 12

Violators

Here are the HTML elements reported to violate rules belonging to the element obsolete issue.

Take me there links will open the page in a new tab and try to scroll to the element and highlight it. This does not always succeed. You can return here by closing the new tab.

• Element 1153

  • Tag name: HTML
  • Text: [not applicable]
  • Start tag: [not obtained]
  • XPath: /html
  • Bounding box: [not obtained]
  • Reported by Alfa
  • What diagnoses were reported?

• Element 334

  • Tag name: B
  • Text: :
  • Start tag: <b>
  • XPath: /html/body/div[2]/main[1]/div[3]/section[1]/ul[1]/li[1]/a[1]/strong[1]/b[1]
  • Bounding box: x = 405, y = 1125, width = 6, height = 29
  • Reported by QualWeb
  • What diagnoses were reported?

• Element 339

  • Tag name: B
  • Text: :
  • Start tag: <b>
  • XPath: /html/body/div[2]/main[1]/div[3]/section[1]/ul[1]/li[2]/a[1]/strong[1]/b[1]
  • Bounding box: x = 468, y = 1199, width = 6, height = 29
  • Reported by QualWeb
  • What diagnoses were reported?

• Element 344

  • Tag name: B
  • Text: :
  • Start tag: <b>
  • XPath: /html/body/div[2]/main[1]/div[3]/section[1]/ul[1]/li[3]/a[1]/strong[1]/b[1]
  • Bounding box: x = 461, y = 1273, width = 6, height = 29
  • Reported by QualWeb
  • What diagnoses were reported?

• Element 349

  • Tag name: B
  • Text: :
  • Start tag: <b>
  • XPath: /html/body/div[2]/main[1]/div[3]/section[1]/ul[1]/li[4]/a[1]/strong[1]/b[1]
  • Bounding box: x = 507, y = 1347, width = 6, height = 29
  • Reported by QualWeb
  • What diagnoses were reported?

• Element 354

  • Tag name: B
  • Text: :
  • Start tag: <b>
  • XPath: /html/body/div[2]/main[1]/div[3]/section[1]/ul[1]/li[5]/a[1]/strong[1]/b[1]
  • Bounding box: x = 475, y = 1421, width = 6, height = 29
  • Reported by QualWeb
  • What diagnoses were reported?

• Element 359

  • Tag name: B
  • Text: :
  • Start tag: <b>
  • XPath: /html/body/div[2]/main[1]/div[3]/section[1]/ul[1]/li[6]/a[1]/strong[1]/b[1]
  • Bounding box: x = 375, y = 1495, width = 6, height = 29
  • Reported by QualWeb
  • What diagnoses were reported?

• Element 364

  • Tag name: B
  • Text: :
  • Start tag: <b>
  • XPath: /html/body/div[2]/main[1]/div[3]/section[1]/ul[1]/li[7]/a[1]/strong[1]/b[1]
  • Bounding box: x = 382, y = 1569, width = 6, height = 29
  • Reported by QualWeb
  • What diagnoses were reported?

• Element 369

  • Tag name: B
  • Text: :
  • Start tag: <b>
  • XPath: /html/body/div[2]/main[1]/div[3]/section[1]/ul[1]/li[8]/a[1]/strong[1]/b[1]
  • Bounding box: x = 429, y = 1643, width = 6, height = 29
  • Reported by QualWeb
  • What diagnoses were reported?

• Element 391

  • Tag name: B
  • Text: Our mission is to make it easy for people to build with, and collaborate on, open-source, trustworthy AI.
  • Start tag: <b>
  • XPath: /html/body/div[2]/main[1]/section[1]/div[1]/header[1]/p[1]/b[1]
  • Bounding box: x = 272, y = 2602, width = 631, height = 59
  • Reported by QualWeb
  • Take me there
  • What diagnoses were reported?

• Element 134

  • Tag name: DIV
  • Text: Products … About us
  • Start tag: <div class="m24-c-navigation-container">
  • XPath: /html/body/nav[1]/div[1]/div[1]
  • Bounding box: x = 240, y = 16, width = 1440, height = 39
  • Reported by ASLint
  • What diagnoses were reported?

• Element 250

  • Tag name: BLINK
  • Text: Products … About us
  • Start tag: <blink class="spacer-gif">
  • XPath: /html/body/nav[1]/div[1]/div[1]/blink[1]
  • Bounding box: x = 1548, y = 16, width = 100, height = 0
  • Reported by QualWeb
  • What diagnoses were reported?