Collapsible

One section that opens and closes.

In Accessible first

See it live

Start Storybook to see it live: npm run storybook

Live from StorybookOpen Collapsible in StorybookSee it in dark

When to use it

In Accessible first: Optional help a person can open.

• Use it when: A single block of extra detail people may want: more filters, advanced options.
• Not when: Several stacked sections (accordion), or content everyone needs.

Instead:

• Accordion: A stack of sections.

Words

• Use common words. Explain any term you must use.
• One idea per sentence. Put the action first.
• Never blame the person.
• Use: Continue, Change, Start, You. Avoid: Invalid, Utilise, Submit, Error code.

The labels components use, from the voice tokens:

• content.action.commit: Continue
• content.action.cancel: Go back
• content.action.destroy: Delete
• content.action.retry: Try again
• content.action.empty-action: Start a new application

See Voice and tone for the whole voice.

Accessibility and keyboard

Keyboard	What happens	Not
undefined	Enter or Space opens and closes.	undefined

Test before you ship:

• The trigger is a button that says whether it is open. undefined

Use it in code

npx open-ds add collapsible

The component reads only component keys and semantic tokens, so it follows the brand and mode on <html>.

Tokens it reads

Collapsible sets no colors, corners or shadows of its own; it takes them from the components inside it.