Expand/Collapse Widget Showcase

These examples demonstrate how to structure interactive sections using summary/details semantics and custom styling.

Basic Expand/Collapse

+ What is an accordion? Click to learn more

An accordion presents a list of headers that can be individually expanded or collapsed to reveal associated content. They are ideal for FAQs, settings panels, or any interface where you want to progressively disclose information.

Keeps interfaces uncluttered.
Improves readability by grouping related content.
Supports progressive disclosure patterns.

Initially Open Section

+ Getting Started Tips Pre-expanded content

Start by identifying the content that benefits most from being collapsible. When in doubt, default to keeping critical information visible.

Design guidelines:

Use concise, descriptive summary titles.
Ensure keyboard and screen-reader accessibility.
Animate transitions subtly to reinforce state changes.

Accordion-Like Behavior

+ Do details elements close automatically? Manual control example

Native <details> elements do not automatically close when another panel is opened. To simulate accordion behavior, supplemental scripting can be used to manage open states.

This example introduces a simple script that ensures only one panel stays open at a time.

+ How does the script work? Lightweight logic

The script listens for the toggle event on each widget. When a panel opens, the script closes any other open panel within the same container.