Classes list

Every class Accordion recognizes, straight from the @flickui/css source.

ClassPurpose
.accordionBase class on the group wrapper — required
.accordion-itemOne collapsible section
.accordion-headingWraps the trigger (should be a heading element like <h3>)
.accordion-triggerThe clickable button — carries aria-expanded/aria-controls
.accordion-titleThe trigger's label text
.accordion-iconChevron icon — rotates 180° when aria-expanded="true"
.accordion-panel / .accordion-contentThe collapsible container and its inner padding wrapper
.action-toggleBehavior hook — required on the trigger for flickui.js to wire it up
.accordion-icon-startMoves the chevron to the start of the trigger
.accordion-outline / -filled / -textVisual grouping style
.accordion-multipleJS-only config — allows multiple items open at once
.accordion-no-collapseJS-only config — the open item can't be closed by re-clicking