Kilotest: Violations of attribute invalid 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: Item behaves improperly
• Priority: highest
• Related WCAG standard: 1.3.1
• Reported by 1 rule engine (Html Checker API)
• Violations: 6
• Violators: 6

Violators

Here are the HTML elements reported to violate rules belonging to the attribute invalid issue.

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• Element 932

  • Tag name: svg
  • Text: [not applicable]
  • Start tag: <svg class="submit-loading" hidden="" fill="currentColor" width="24" height="24" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
  • XPath: /html/body/div[2]/footer[1]/div[1]/div[1]/div[2]/form[1]/fieldset[1]/p[1]/button[1]/svg[1]
  • Bounding box: [not obtained]
  • Reported by Html Checker API
  • What diagnoses were reported?

• Element 472

  • Tag name: H3
  • Text: You, AI and the internet — what’s really going on?
  • Start tag: <h3 class="m24-c-intro-title m24-t-sm" itemprop="sectionTitle">
  • XPath: /html/body/div[2]/main[1]/section[2]/h3[1]
  • Bounding box: x = 272, y = 4101, width = 1376, height = 32
  • Reported by Html Checker API
  • Take me there
  • What diagnoses were reported?

• Element 477

  • Tag name: DIV
  • Text: Type
  • Start tag: <div class="m24-c-springboard-type" itemprop="columnOne">
  • XPath: /html/body/div[2]/main[1]/section[2]/ul[1]/li[1]/div[1]/div[2]
  • Bounding box: x = 363, y = 4205, width = 77, height = 15
  • Reported by Html Checker API
  • Take me there
  • What diagnoses were reported?

• Element 478

  • Tag name: DIV
  • Text: Author(s)
  • Start tag: <div class="m24-c-springboard-author" itemprop="columnTwo">
  • XPath: /html/body/div[2]/main[1]/section[2]/ul[1]/li[1]/div[1]/div[3]
  • Bounding box: x = 472, y = 4205, width = 172, height = 15
  • Reported by Html Checker API
  • Take me there
  • What diagnoses were reported?

• Element 479

  • Tag name: DIV
  • Text: Topic
  • Start tag: <div class="m24-c-springboard-topic" itemprop="columnThree">
  • XPath: /html/body/div[2]/main[1]/section[2]/ul[1]/li[1]/div[1]/div[4]
  • Bounding box: x = 676, y = 4205, width = 191, height = 15
  • Reported by Html Checker API
  • Take me there
  • What diagnoses were reported?

• Element 480

  • Tag name: DIV
  • Text: Intro
  • Start tag: <div class="m24-c-springboard-preview" itemprop="columnFour">
  • XPath: /html/body/div[2]/main[1]/section[2]/ul[1]/li[1]/div[1]/div[5]
  • Bounding box: x = 899, y = 4205, width = 746, height = 15
  • Reported by Html Checker API
  • Take me there
  • What diagnoses were reported?