Kilotest: Diagnoses of CSS invalid
violation by HTML element 0 on Sightline Institute page
Basics
About the Sightline Institute page
- URL: https://www.sightline.org/
- Tested 29 days ago by job
wxvon 2026-05-03 at 17:04
About HTML element 0
- Tag name:
HTML - Text: [not applicable]
- Start tag:
<html lang="en-US"> - XPath:
/html - Bounding box: x = 0, y = 0, width = 1920, height = 3596
About the CSS invalid
issue
- Why it matters: Document cannot be properly displayed
- Priority: high
- Related WCAG standard: 4.1
Diagnoses
Here is how tools diagnose the CSS invalid
issue for HTML element 0 of the Sightline Institute page.
- CSS: contain-intrinsic-size: Property contain-intrinsic-size doesn't exist.
Tool: Html Checker API (World Wide Web Consortium)
- CSS: font-weight: semi-condensed is not a font-weight value.
Tool: Html Checker API (World Wide Web Consortium)
- CSS: Parse Error.
Tool: Html Checker API (World Wide Web Consortium)
- CSS: display-none: Parse Error.
Tool: Html Checker API (World Wide Web Consortium)
- CSS: font-weight: 600px is not a font-weight value.
Tool: Html Checker API (World Wide Web Consortium)