Kilotest: Diagnoses of element obsolete violation by HTML element 1153 on Mozilla Foundation page

Basics

About the Mozilla Foundation page

• URL: https://www.mozilla.org/en-US/
• Tested 38 days ago by job tyn on 2026-04-24 at 19:48

About HTML element 1153

• Tag name: HTML
• Text: [not applicable]
• Start tag: [not obtained]
• XPath: /html
• Bounding box: [not obtained]

About the element obsolete issue

• Why it matters: Document includes obsolete code that the browser may fail to process
• Priority: high
• Related WCAG standard: 4.1

Diagnoses

Here is how tools diagnose the element obsolete issue for HTML element 1153 of the Mozilla Foundation page.