Kilotest: Diagnoses of invalid CSS at-rule violation by HTML element 0 on Water for People contact page

Basics

About the page

• URL: https://www.waterforpeople.org/contact-us/
• Tested 3 days ago on 2026-10-07 at 23:11 by job 261007T2305-6zv
• Summary of results:
  • Rule engines:
    • Called: 12
    • Were able to test: 12
    • Reported any rule violations: 12
  • Violations: 864
  • Violators: 314
  • Issues: 71
• Download the full technical report (JSON)

About the issue

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

About the violator

• Tag name: HTML
• Text: [not applicable]
• Start tag: <html lang="en-US" prefix="og: https://ogp.me/ns#" class="chrome chrome153" style="overflow-x: hidden;">
• XPath: /html
• Bounding box: x = 0, y = 0, width = 1920, height = 3222
• Reported by Html Checker

Diagnoses

Here is how rule engines diagnose the invalid CSS at-rule issue for HTML element 0 of the Water for People contact page.

1. Style rule .uabb-button not allowed outside an @scope rule in a style element in body. Extract: / .uabb-button {

   Rule engine: Html Checker (World Wide Web Consortium)

   Rule: Style rule .uabb-button not allowed outside an @scope rule in a style element in body.