CSS‑Only Accordion Builder - Online No JavaScript FAQ

Developer Tools Generator builder CSS accordion FAQ no JS

CSS‑Only Accordion Builder

Build a beautiful, SEO‑friendly FAQ accordion using pure HTML & CSS — zero JavaScript required. Uses the native <details> element with full style customization.

Add FAQ Item

Your FAQ Items

Style Settings

Preset Themes

Accent Color

#4f46e5

Background

#fafbfc

Text Color

Border Color

Icon Style

Border Radius

Enable open/close animation

Enable hover shadow

Live Preview

Generated HTML & CSS

Copy and paste this into your HTML file. No JavaScript needed!

About CSS‑Only Accordions

What is a CSS‑only accordion?

A CSS‑only accordion uses the HTML5 <details> and <summary> elements to create expandable content panels without any JavaScript. It's lightweight, accessible, and SEO‑friendly since all content is in the DOM at page load.

Is it SEO‑friendly?

Yes! Unlike JS‑based accordions that may hide content with display:none, the <details> element keeps all text in the HTML source. Search engines can crawl and index all FAQ content, even when collapsed.

Can I add animations?

Yes — our builder includes a max‑height transition hack. By wrapping content in a div and transitioning max-height from 0 to a large value on details[open], you get a smooth expand/collapse effect in pure CSS.

Browser support?

<details> is supported in all modern browsers: Chrome, Firefox, Safari, Edge (including mobile). It's part of the HTML5 Living Standard. For IE11, a small polyfill may be needed.

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