Is this accessible for screen readers?

Yes! Because it uses native HTML5 ` ` and ` ` elements, all keyboard controls (Space/Enter to toggle) and screen reader accessibility announcements work out of the box.

Updated: August 2026 • Verified v1.2

Pure CSS Smooth <details> Accordion Generator

Creative & DesignDesign

Local Browser Execution: Your input is processed locally in your browser and is not sent to UTL servers.

.content { display: grid; grid-template-rows: 0fr; } details[open] .content { grid-template-rows: 1fr; }

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Understanding Your Results

Adjusts transition duration, border radius, and accent color, displaying an interactive live preview accordion and generating modern CSS `grid-template-rows: 0fr -> 1fr` code with zero JavaScript.

Practical Guidance & Next Steps

Using `grid-template-rows: 0fr -> 1fr` on an inner wrapper lets browsers interpolate dynamic auto-height smoothly, completely bypassing the classic CSS `height: auto` limitation.

What is this?

A web design utility that creates smooth, hardware-accelerated accordion animations using HTML5 `<details>` and CSS Grid height interpolation.

How does it work?

1. Customize transition duration, border radius, and accent color. 2. Click the live interactive preview items to test smooth opening. 3. Copy the clean HTML5 and CSS snippet in 1 click.

Why use it?

Delivers buttery-smooth FAQ accordions with 100% native browser accessibility and zero JavaScript bloat.

Technical Scope & Calculation Limitations

Generates pure HTML5 and modern CSS Grid code.

Frequently Asked Questions

By placing an inner wrapper inside `<details>` with `display: grid; grid-template-rows: 0fr; transition: grid-template-rows 0.3s ease;` and changing it to `1fr` when `details[open]`, modern browsers smoothly interpolate the content height.

Windows Desktop & Widget Options