parsley/app/javascript/styles/_transitions.scss

.fade-enter-active, .fade-leave-active {
  transition: opacity .5s, max-height .5s;
  max-height: 300px;
}
.fade-enter, .fade-leave-to /* .fade-leave-active below version 2.1.8 */ {
  opacity: 0;
  max-height: 0;
}


.expand-enter-active,
.expand-leave-active {
//  transition: height .5s ease-in-out;
//  overflow: hidden;
}



.list-item-move-move {
  transition: transform 0.25s;
}