What it means
This reduces the initial visual length of a page while keeping supporting detail nearby. It is most useful for genuine questions that arise after the main explanation. The control should clearly indicate whether its answer is open and work with a keyboard as well as a pointer.
Use it in practice
Use recognizable questions and concise answers. Implement the disclosure with semantic controls and expose expanded state to assistive technology.
Watch out for
Do not hide the basic offer or essential pricing conditions in an accordion. A screenshot only shows the visual treatment, not the accessibility of its implementation.
