我有两个div，我使用transition-group在它们之间转换，这是应该的-然而，div转换下面的内容，是“跳跃”取决于div的高度。我想要的是跳跃被阻止，而是它以某种方式动画化，所以当在元素之间切换时，我得到了一个很好的平滑过渡，而不是它“推”到内容与“跳跃”。
希望有道理：）
我在这里设置了一个关于codesandbox的示例：https://codesandbox.io/s/reverent-stallman-8ixhp?file=/src/components/HelloWorld.vue
模板如下所示：

<div class="hello">
    <button @click="groupShowOne">Show first {{ gShowFirst }}</button>
    <button @click="groupShowTwo">Show second {{ gShowSecond }}</button>
    <transition-group name="fade-group" tag="div" mode="out-in" appear>
      <div
        class="group-element"
        v-if="gShowFirst"
        style="background-color: yellow"
      >
        <h3>This is a headline</h3>
        <p>This is a text</p>
      </div>
      <div
        class="group-element"
        v-if="gShowSecond"
        style="background-color: red"
      >
        <h3>
          This is a headline <br />This is a headline <br />This is a headline
          This is a headline This is a headline This is a headline
        </h3>
        <p>
          This is a text This is a text This is a text This is a text This is a
          text v This is a text v <br />This is a text This is a text This is a
          text This is a text This is a text v This is a text v <br />This is a
          text This is a text This is a text This is a text This is a text v
          This is a text v
        </p>
      </div>
    </transition-group>
    <div style="background-color: blue; min-height: 500px; color: #FFF">
      Prevent this div from jumping<br />
    </div>
  </div>

动画外观为：

<style scoped>
.group-element {
  width: 100%;
  min-height: 100px;
  max-height: 20000px;
  transition: all 0.5s;
}
.fade-group-enter,
.fade-group-leave-to {
  opacity: 1;
}
.fade-group-leave-active {
  opacity: 0;
  position: absolute;
}
</style>