Kilotest: Diagnoses of attribute value invalid violation by HTML element 475 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 475

• Tag name: BUTTON
• Text: Toggle
• Start tag: <button class="btn btn-rounded btn-grey mega-menu-btn mega-menu-btn--global relative block" aria-controls="" aria-expanded="false">
• XPath: /html/body/header[1]/div[2]/nav[1]/div[3]/button[1]
• Bounding box: x = 0, y = 0, width = 0, height = 0

About the attribute value invalid issue

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

Diagnoses

Here is how tools diagnose the attribute value invalid issue for HTML element 475 of the Oregon Museum of Science and Industry page.

1. Bad value for attribute aria-controls on element button: An IDREFS value must contain at least one non-whitespace character.

   Tool: Html Checker API (World Wide Web Consortium)