Accompanying Files
Observation Details
The collapsible (caret icon) in intro section "Das Besondere an der Anio 6 ist die Reduktion auf das Wesentliche:" can be expanded via keyboard navigation. Expanding the item should keep the focus on the same element so that a second click would collapse the item again.
Remediation Notes
Ensure keyboard accessibility by using semantic HTML elements, fitting the intended functionality. For a collapsible item, use the native dialog and summary elements and markup the code as follows (example structure):
<details>
<summary>
...
</summary>
<ul>
<li>...</li>
<...
</ul>
</details>