Kilotest: Diagnoses of invalid at-rule
violation by HTML element 0 on University of Oregon page
Basics
About the University of Oregon page
- URL: https://www.uoregon.edu/
- Tested 19 days ago by job
8n6on 2026-08-12 at 21:27
About HTML element 0
- Tag name:
HTML - Text: [not applicable]
- Start tag:
<html lang="en" dir="ltr" prefix="content: http://purl.org/rss/1.0/modules/content/ dc: http://purl.org/dc/terms/ foaf: http://xmlns.com/foaf/0.1/ og: http://ogp.me/ns# rdfs: http://www.w3.org/2000/01/rdf-schema# schema: http://schema.org/ sioc: http://rdfs.org/sioc/ns# sioct: http://rdfs.org/sioc/types# skos: http://www.w3.org/2004/02/skos/core# xsd: http://www.w3.org/2001/XMLSchema# " class=" js js"> - XPath:
/html - Bounding box: x = 0, y = 0, width = 1920, height = 6586
About the invalid at-rule
issue
- Why it matters: Document cannot be properly displayed in particular contexts
- Priority: high
- Related WCAG standard: 4.1
Diagnoses
Here is how rule engines diagnose the invalid at-rule
issue for HTML element 0 of the University of Oregon page.
- CSS: Unrecognized at-rule @property
Tool: Html Checker API (World Wide Web Consortium)
- CSS: Unrecognized at-rule @property
Tool: Html Checker API (World Wide Web Consortium)