Kilotest: Diagnoses of attribute invalid violation by HTML element 220 on Taproot Foundation contact page

Basics

About the page

• URL: https://taprootfoundation.org/contact
• Tested 3 days ago on 2026-10-07 at 22:20 by job 261007T2148-sru
• Summary of results:
  • Rule engines:
    • Called: 12
    • Were able to test: 11
    • Reported any rule violations: 11
  • Violations: 644
  • Violators: 233
  • Issues: 35
• Download the full technical report (JSON)

About the issue

• Why it matters: Item behaves improperly
• Priority: highest
• Related WCAG standard: 1.3.1
• Reported by 1 rule engine (Html Checker)
• Violations: 47
• Violators: 22

About the violator

• Tag name: UL
• Text: Taproot Plus … Grantmakers
• Start tag: <ul id="site-header-mobile-work-with-us" class="site-header__mobile-sublist" x-show="section === 'work-with-us'" style="display: none;">
• XPath: /html/body/header[1]/nav[1]/ul[1]/li[2]/ul[1]
• Bounding box: [not obtained]
• Reported by Html Checker

Take me there

Diagnoses

Here is how rule engines diagnose the attribute invalid issue for HTML element 220 of the Taproot Foundation contact page.

1. Attribute x-show not allowed on element ul at this point.

   Rule engine: Html Checker (World Wide Web Consortium)