Vue: teleport

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="description" content="">
  <meta name="keywords" content="bait bark">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no">
  <title>Vehemence</title>
  <script src="dist/vue.global.js"></script>
  <style>
    .box {
      position: absolute;
      left: 50%;
      top: 50%;
      transform: translate(-50%, -50%);
      width: 300px;
      height: 300px;
      background-color: aqua;
    }

    .mask {
      position: absolute;
      left: 0;
      top: 0;
      right: 0;
      bottom: 0;
      background-color: rebeccapurple;
      opacity: 0.5;
      color: white;
      display: flex;
      justify-content: center;
      align-items: center;
    }

    #main {
      position: absolute;
      width: 300px;
      height: 300px;
      background-color: skyblue;
    }
  </style>
</head>

<body>
  <main id="vale">

  </main>
  <main id="main"></main>
  <template id="t1">
    <aside class="box">
      <button @click="click">mask</button>
      <!-- <teleport to="body"> -->
      <teleport to="#main">
        <div class="mask" v-show="isShow">{{msg}}</>
      </teleport>
    </aside>
  </template>
  <script>
    let vail = Vue.createApp({
      data () {
        return { msg: 'rtyu', isShow: false }
      },
      methods: {
        click () {
          this.isShow = !this.isShow
        }
      },
      template: '#t1'
    }).mount('#vale')
  </script>
</body>

</html>