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An accordion is a list of headers that hide or reveal additional content when selected.

An accordion is similar in purpose to a tabbed interface: a list of items where one item is expanded into a panel at once.
The list items are effectively shortcuts to access separate content sections.

Usage & Behavior

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An accordion should be used:

• To allow users to have control over the content, by expanding what they want to read and hiding what they want to ignore.

• Where there’s only a small space in which to display a lot of content.

• When wanting to minimize scrolling.

• To make lots of content appear less daunting, by allowing the user to focus on one part at a time.

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The first content section in the accordion should be open when first loading the page.

Internal Logic

The accordion component delivers large amounts of content in a small space through progressive disclosure.

• The user gets key details about the underlying content and can choose to expand content sections within the constraints of the accordion.

• Accordions work especially well where vertical space is limited.

States (TBD - not final design)

State	Image	Comment
Section header closed
Section header open
Section header hover
Selected content mark

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State	Image	Comment
Selected content mark
Section header with checkbox
Section header with warning

Interaction

• You can click on any part of a section header to select (open) it.

• There's always one section open in the accordion.

• Only one section can be open at a time.

• When opening a new section, the previously-open section should close automatically.

• When closing an open section, the section beneath it should open automatically. Closing the last section in the accordion should automatically open the section directly above it.

• Hovering over a section header should show a tooltip with the full name of the section header.

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Zeplin link	Screen thumbnail
https://zpl.io/29QMlzdV04WW99

Code

<<a box containing the code - discuss with Femi>>

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