Expand and Collapse
One or more panels can expand or collapse at once by clicking the panel header (or programmatically) also you can choose which panel should be shown when the others are collapsed.
Within the parent accordion, you can construct nested levels of the collapsible panel.
The accordion animation library offers a wide range of beautiful built-in and custom animations for both expand and collapse operations.
Navigation menu and Icon
The HTML5 Accordion can use a nested vertical (hierarchical) navigation menu with links, including external links. The panel header can be enhanced with prefix icons or images.