Kilotest: Diagnoses of ID not unique violation by HTML element 298 on California YIMBY Education Fund page

Here is how tools diagnose the ID not unique issue for HTML element 298 of the California YIMBY Education Fund page.

Basics

• 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
• About the California YIMBY Education Fund page
  • URL: https://cayimby.org/
  • Tested on 2026-04-02 at 14:22
• About HTML element 298
  • Tag name: FORM
  • Text: Sign Up
  • Start tag: <form id="an_form">
  • XPath: /html/body/div[1]/footer[1]/div[1]/div[1]/div[1]/div[1]/form[1]
  • Bounding box: x = 352, y = 3871, width = 540, height = 48

Diagnoses

1. The element does not have a unique ID

   Tool: Alfa (Siteimprove)

   Rule: r3

2. Attribute <code>id="email"</code> should be unique. It has been defined 2 times.

   Tool: ASLint (eSSENTIAL Accessibility)

   Rule: duplicated_id_attribute

3. The first occurrence of ID an_form was here.

   Tool: Html Checker API (World Wide Web Consortium)