Kilotest: Diagnoses of ID not unique violation by HTML element 1804 on Northwest Natural Gas page

Basics

About the Northwest Natural Gas page

• URL: https://www.nwnatural.com/
• Tested 7 days ago by job wta on 2026-05-26 at 03:09

About HTML element 1804

• Tag name: polygon
• Text: [not applicable]
• Start tag: <polygon id="Stroke-720" points="10.9375 13.0122125 10.9375 7.4953375 17.310125 10.2542125">
• XPath: /html/body/svg[1]/defs[1]/symbol[91]/g[1]/g[1]/g[1]/g[1]/g[1]/g[1]/g[1]/polygon[3]
• Bounding box: x = 0, y = 0, width = 0, height = 0

About the ID not unique issue

• Why it matters: User may be pointed to the wrong item
• Priority: highest
• Related WCAG standard: 4.1.1

Diagnoses

Here is how tools diagnose the ID not unique issue for HTML element 1804 of the Northwest Natural Gas page.

1. [failed]

   Tool: QualWeb (University of Lisbon)

   Rule: QW-BP30