Kilotest: Diagnoses of element closure invalid violation by HTML element 100 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 contains invalid code
• Priority: high
• Related WCAG standard: 4.1
• Reported by 1 rule engine (Html Checker)
• Violations: 2
• Violators: 2

About the violator

• Tag name: BODY
• Text: [not applicable]
• Start tag: <body class="home wp-singular page-template-default page page-id-22727 wp-custom-logo wp-embed-responsive wp-theme-catf-2021 wp-schema-pro-2.12.0">
• XPath: /html/body
• Bounding box: x = 0, y = 0, width = 1920, height = 7933
• Reported by Html Checker

Diagnoses

Here is how rule engines diagnose the element closure invalid issue for HTML element 100 of the Clean Air Task Force (CATF) page.

1. Start tag body seen but an element of the same type was already open.

   Rule engine: Html Checker (World Wide Web Consortium)