Kilotest: Diagnoses of ID not unique violation by HTML element 915 on Oregon Museum of Science and Industry page

Basics

About the Oregon Museum of Science and Industry page

• URL: https://omsi.edu/
• Tested 20 days ago by job 42w on 2026-05-12 at 23:14

About HTML element 915

• Tag name: DIV
• Text: Events Today … Get Tickets
• Start tag: <div class="site-container py-2xl" id="events-today">
• XPath: /html/body/article[1]/div[1]/div[2]/section[4]/div[1]/div[1]
• Bounding box: x = 240, y = 2247, width = 1440, height = 1499

Take me there

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 915 of the Oregon Museum of Science and Industry page.

1. Duplicate id attribute value "events-today" found on the web page.

   Tool: HTML CodeSniffer (Squiz Labs)

   Rule: E-WCAG2AAA.Principle4.Guideline4_1.4_1_1.F77

2. Duplicate ID events-today.

   Tool: Html Checker API (World Wide Web Consortium)

3. [failed]

   Tool: QualWeb (University of Lisbon)

   Rule: QW-BP30