.CollapseAnimation[data-state=open]{animation:.4s slideCollapseDown}.CollapseAnimation[data-state=closed]{animation:.4s slideCollapseUp}@keyframes slideCollapseDown{0%{height:0}to{height:var(--reka-collapsible-content-height)}}@keyframes slideCollapseUp{0%{height:var(--reka-collapsible-content-height)}to{height:0}}