.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;
}

//.expand-enter,
//.expand-leave-to {
//  height: 0;
//}