Kilotest: Diagnoses of attribute invalid violation by HTML element 0 on Go Portland Go! Coalition page

Basics

About the Go Portland Go! Coalition page

URL: https://www.goportlandgo.org/coalition
Tested 5 days ago by job xr7 on 2026-08-26 at 20:15

About HTML element 0

Tag name: HTML
Text: [not applicable]
Start tag: <html xmlns:og="http://opengraphprotocol.org/schema/" xmlns:fb="http://www.facebook.com/2008/fbml" lang="en-US" style="--header-height: 91.75px; scroll-behavior: smooth; --header-fixed-top-offset: 92.75px; scroll-padding-top: 92.75px;">
XPath: /html
Bounding box: x = 0, y = 0, width = 1920, height = 6157

About the attribute invalid issue

Why it matters: Item behaves improperly
Priority: highest
Related WCAG standard: 1.3.1

Diagnoses

Here is how rule engines diagnose the attribute invalid issue for HTML element 0 of the Go Portland Go! Coalition page.

Attribute xmlns:og not allowed here.
Tool: Html Checker (World Wide Web Consortium)
Attribute xmlns:fb not allowed here.
Tool: Html Checker (World Wide Web Consortium)