Kilotest: Diagnoses of attribute obsolete violation by HTML element 280 on Clean Air Task Force (CATF) page

Basics

About the page

• URL: https://www.catf.us/
• Tested 3 days ago on 2026-10-07 at 19:52 by job 261007T1941-eso
• Summary of results:
  • Rule engines:
    • Called: 12
    • Were able to test: 12
    • Reported any rule violations: 12
  • Violations: 697
  • Violators: 328
  • Issues: 52
• 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 1 rule engine (ASLint)
• Violations: 3
• Violators: 2

About the violator

• Tag name: DIV
• Text: [not applicable]
• Start tag: <div class="wp-block-embed__wrapper">
• XPath: /html/body/div[2]/div[1]/div[2]/div[1]/div[1]/figure[1]/div[1]
• Bounding box: x = 562, y = 1116, width = 795, height = 447
• Reported by ASLint

Diagnoses

Here is how rule engines diagnose the attribute obsolete issue for HTML element 280 of the Clean Air Task Force (CATF) page.

1. The following attributes <code>frameborder, scrolling</code> are obsolete (though the elements are still part of the language), and must not be used by authors.

   Rule engine: ASLint (eSSENTIAL Accessibility)

   Rule: obsolete_html_attributes