Accordions

• Accordions Are Not Always the Answer for Complex Content on Desktops by Hoa Loranger at Nielsen Norman Group discusses that longer pages can benefit users. Accordions shorten pages and reduce scrolling, but they increase the interaction cost by requiring people to decide on topic headings.
• The details and summary elements by Scott O'Hara on his website. This covers not only how to use the components but also what the various screen readers and accessibility technology do with it.
• Accessible ARIA Accordions by Scott O'Hara on his website.