Vue Router路径切换过渡动画

<template>
  <div id="app">
    <transition name="fade" mode="out-in">
      <router-view></router-view>
    </transition>
  </div>
</template>

<script>
export default {
  name: "App"
};
</script>

<style>
#app {
  margin: 0;
  padding: 0;
}
.fade-enter-active,
.fade-leave-avtive {
  transition: opacity 0.3s;
}
.fade-enter,
.fade-leave-to {
  opacity: 0;
}
</style>