Expected: with contenteditable enabled, dragging a text selection from the first open FAQ item into the second open FAQ item should create one continuous selection across both <details> elements. Safari and Firefox allow this. In Chrome, the selection is blocked at the boundary between accordion items.

What is this example?

This is a small FAQ-style accordion built with native <details> and <summary> elements. Try starting a selection in this paragraph and dragging into the next item.

Does it need JavaScript?

No. Browsers provide the expand/collapse interaction automatically for <details> elements. This second paragraph is here so the selection can cross from one accordion item into another.