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Every FAQ example I find pulls in a whole JavaScript library just to show and hide a paragraph.
What you'll have at the end
An FAQ section built entirely from details and summary elements, at most one answer open at a time, that still works with the page's JavaScript turned off.
You need
A live FAQ section where each question already shows and hides its answer through a JavaScript accordion script.
Not covered
Styling the toggle's arrow or animating the open and close motion, both of which need the CSS this recipe doesn't touch.
Checked 25 Aug 2026
Part of the HTML5 cookbook