Searchable, collapsible sections with hidden=until-found

Nathan Knowler demonstrates how to enhance the classic collapsible pattern by making its hidden content searchable with the new hidden=until-found attribute. The article covers progressive enhancement, accessibility, and browser support (Chrome, Firefox, Safari TP), showing how to combine it with the beforematch event for better UX.

knowler.dev/blog/searchable-collapsible-sections-with-hidden-until-found