Kilotest: Diagnoses of attribute value invalid violation by HTML element 1451 on Prometheus page

Basics

About the Prometheus page

• URL: https://www.joinprometheus.org/
• Tested 29 days ago by job hzk on 2026-05-03 at 17:00

About HTML element 1451

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

About the attribute value invalid issue

• Why it matters: Item behaves improperly
• Priority: highest
• Related WCAG standard: 1.3.1

Diagnoses

Here is how tools diagnose the attribute value invalid issue for HTML element 1451 of the Prometheus page.