Kilotest: Diagnoses of code obsolete violation by HTML element 294 on Taproot Foundation page

Basics

About the page

• URL: https://taprootfoundation.org/
• Tested 3 days ago on 2026-10-07 at 23:08 by job 261007T2305-4se
• Summary of results:
  • Rule engines:
    • Called: 12
    • Were able to test: 12
    • Reported any rule violations: 11
  • Violations: 508
  • Violators: 244
  • Issues: 35
• Download the full technical report (JSON)

About the issue

• Why it matters: Page contains code that is no longer standard
• Priority: high
• Related WCAG standard: 4.1
• Reported by 1 rule engine (Accessibility Checker)
• Violations: 1
• Violators: 1

About the violator

• Tag name: IFRAME
• Text: [not applicable]
• Start tag: <iframe src="https://player.vimeo.com/video/1229913226?app_id=122963" width="426" height="240" frameborder="0" allow="autoplay; fullscreen; picture-in-picture; clipboard-write; encrypted-media; web-share" referrerpolicy="strict-origin-when-cross-origin" title="Taproot anthem video">
• XPath: /html/body/div[2]/section[2]/div[2]/iframe[1]
• Bounding box: x = 308, y = 631, width = 1304, height = 734
• Reported by Accessibility Checker

Diagnoses

Here is how rule engines diagnose the code obsolete issue for HTML element 294 of the Taproot Foundation page.

1. The HTML attribute(s) "frameborder" is deprecated for the <iframe> element in HTML 5

   Rule engine: Accessibility Checker (IBM)

   Rule: element_attribute_deprecated