Kilotest: Diagnoses of CSS invalid violation by HTML element 0 on Fair Vote page

Basics

About the page

• URL: https://fairvote.org/
• Tested 3 days ago on 2026-10-07 at 21:15 by job 261007T2112-ljo
• Summary of results:
  • Rule engines:
    • Called: 12
    • Were able to test: 12
    • Reported any rule violations: 11
  • Violations: 714
  • Violators: 357
  • Issues: 53
• Download the full technical report (JSON)

About the issue

• Why it matters: Page cannot be properly displayed
• Priority: high
• Related WCAG standard: 4.1
• Reported by 1 rule engine (Html Checker API)
• Violations: 4
• Violators: 4

About the violator

• Tag name: HTML
• Text: [not applicable]
• Start tag: <html lang="en">
• XPath: /html
• Bounding box: x = 0, y = 0, width = 1920, height = 4336
• Reported by Html Checker API

Diagnoses

Here is how rule engines diagnose the CSS invalid issue for HTML element 0 of the Fair Vote page.

1. CSS: width: The types are incompatible. Extract: on--width)/100))}.wp-block-but

   Rule engine: Html Checker API (World Wide Web Consortium)

   Rule: CSS: width: The types are incompatible.