Kilotest: Diagnoses of ID not unique violation by HTML element 1404 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 1404

• Tag name: polyline
• Text: [not applicable]
• Start tag: <polyline id="Rectangle-Copy" stroke-linecap="round" stroke-linejoin="round" transform="translate(15.839192, 15.839192) rotate(-315.000000) translate(-15.839192, -15.839192) " points="8.04865763 23.6297262 4.6391919 27.0391919 4.6391919 4.6391919 27.0391919 4.6391919 23.9828986 7.69548518">
• XPath: /html/body/svg[1]/defs[1]/symbol[53]/g[1]/g[1]/g[1]/polyline[1]
• 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 1404 of the Northwest Natural Gas page.

1. [failed]

   Tool: QualWeb (University of Lisbon)

   Rule: QW-BP30