.v-enter,.v-leave-to {opacity: 0;transform: rotateY(120deg);}.v-enter-active,.v-leave-active {transition: all 1s ease;}

<transition><div v-cloak v-show="flag"><span class='badge'>李白 </span><span id='input-size'>善良之人啊，你是</span><br><br></div></transition>