Accordion FAQ — 3 Techniques Compared

Updated Apr 30, 2026

Compare 3 different approaches to build accordion FAQ sections: the CSS checkbox hack (multi-open supported), native HTML details/summary elements (semantic, built-in), and JavaScript-powered accordion (custom animations and behavior). Learn the pros and cons of each to pick the right technique for your project.

Open Demo

[CSS Checkbox Hack] Pure CSS Accordion with Checkbox

Demo & Code

Accordion made with pure CSS using the checkbox input+label trick to style active panels. Technique: CSS Checkbox Hack. No JS, multi-open supported natively. Source code by Raubaca on CodePen.

Technologies

HTML CSS JavaScript

Code By

Raubaca

Created

2023-10-05

View on CodePen

Open Demo

[HTML details/summary] Accordion with details/summary

Demo & Code

Using native HTML details/summary elements with name attribute for exclusive accordion behavior. Technique: HTML details/summary. Semantic HTML, built-in, zero CSS needed. Source code by Danny Moerkerke on CodePen.

Technologies

HTML CSS JavaScript

Code By

Danny Moerkerke

Created

2025-09-15

View on CodePen

Open Demo

[JavaScript Accordion] JS Accordion with Animations

Demo & Code

JavaScript-powered accordion with smooth height animations and multiple open states. Technique: JavaScript Accordion. Full animation control, customizable behavior. Source code by Aaron Iker on CodePen.

Technologies

HTML CSS JavaScript

Code By

Aaron Iker

Created

2025-06-20

View on CodePen