When the "Show details" button is activated, a container appears with two tabs, "Cookie statement" and "More information about cookies." While it’s visually clear which tab is active, this is not conveyed in the code for assistive technologies.

Recommendation: Implement the ARIA tablist pattern with correct roles (tablist, tab, tabpanel) and dynamically update states to indicate the active tab, as outlined here: https://www.w3.org/WAI/ARIA/apg/patterns/tabs/