George Mamadashvili

You can use this block to hide and reveal content as needed. Create FAQ pages, hide spoilers in posts, or create simple accordion elements.
The block uses <code><details></code> and <code><summary></code> HTML elements and doesn’t require any additional JavaScript or CSS on the theme side.

Toggles

lastsplash (a11n)

Beginning with WordPress v6.3, a Details Block is included in WordPress. This plugin is no longer needed.
The block allows you to easily show and hide content using built-in browser functionality. It doesn’t load any external JavaScript and relies on native HTML functionality. You can configure the appearance using built-in editor controls.
It uses the HTML <code>details</code> element to show and hide the content.

Toggles vs Details: Show and Hide