CSS-only collapsible FAQ
Native HTML details elements with 100% inline CSS.
What is the details element?
A native HTML element that toggles open and closed without JavaScript. It is accessible and keyboard-operable by default.
Can I animate it?
The open and close behavior is handled by the browser. Advanced animations require CSS selectors or JavaScript.
Is it accessible?
Yes. The details element has excellent accessibility support and works with keyboard navigation and screen readers.
Can multiple FAQs stay open?
Yes. Each details element manages its own state independently, so users can open multiple items simultaneously.
Do I need JavaScript?
No. The details and summary elements provide expand/collapse functionality natively in modern browsers.


