Investigate use of details/summary tags to create accessible accordion component

[gestchild]

It's possible to create accordion behaviour with details/summary tags and this is something we might need to do for the Exhibition pages.

However, we need to be sure it is accessible.

Graham Armfield of Hassell Inclusion, concluded it wasn't, but that was in 2019. We should establish if this is now better supported by assistive technologies and/or if there are better alternatives.

See chapter 9 of Practical Accessibility