Collapse a section of content under a heading.
Use this when your content would benefit from collapsing a section of content under its heading. People should have a good idea of whether to open it by the heading alone, so be sure that the heading is descriptive of the contents within it.
For a group of related sections, also use the accordion pattern.
When possible, consider editing down your content for it not to need this details pattern. Collapsed content can make it harder for people to discover what they're looking for as now they need to interact with the page rather than scrolling. Consider reviewing the content foundation.
Write a summary heading that says what's inside. People open a section based on its label, so name it for the content (e.g., not "view more").
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<summary class="pl-details__summary"><h3>Biographical / Historical</h3></summary>
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<p>John Wilbur (1774-1856) of Hopkinton, Rhode Island, married Lydia Collins in 1793. He became an Elder at age 28 and a Minister in 1812, advocating for conservative Quaker principles. He undertook two religious journeys to Britain, in 1831-33 and 1853-54. His sustained opposition to Joseph John Gurney led to his disownment in 1843 and the subsequent 1845 separation of New England Yearly Meeting into Gurneyite and Wilburite factions.</p>
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This pattern is not in use yet.