.f-expand-enter-active,.f-expand-leave-active{transition:height var(--f-item-transition-duration), opacity var(--f-item-transition-duration), transform var(--f-item-transition-duration), margin-top var(--f-item-transition-duration);overflow:hidden}.f-expand-enter-from,.f-expand-leave-to{opacity:0;height:0;transform:translateY(calc(-1 * var(--f-transition-translate-y,0)))}