Kilotest: Diagnoses of attribute invalid
violation by HTML element 258 on Sightline Institute page
Here is how tools diagnose the attribute invalid
issue for HTML element 258 of the Sightline Institute page.
Basics
- About the
attribute invalid
issue- Why it matters: Item behaves improperly
- Priority: highest
- Related WCAG standard: 1.3.1
- About the Sightline Institute page
- URL:
https://www.sightline.org/ - Tested on 2026-04-03 at 04:04
- URL:
- About HTML element 258
- Tag name:
BUTTON - Text:
Housing + Cities
- Start tag:
<button class="gb-button gb-button-36f00d20 gb-tabs__button" id="gb-tab-button-36f00d20" aria-controls="gb-tab-item-d20f8bd1" aria-selected="false" tabindex="-1"> - XPath:
[not obtained] - Bounding box: x = 1124, y = 1196, width = 172, height = 45
- Tag name:
Diagnoses
- The ARIA attributes "aria-selected" are not valid for the element <button> with implicit ARIA role "button"
Tool: Accessibility Checker (IBM)
Rule:
aria_attribute_valid