Vue Js Toggle DropDwon

<html>
<head>
  <script type="importmap">
      {
        "imports": {
          "vue": "https://unpkg.com/vue@3/dist/vue.esm-browser.js"
        }
      }
    </script>
<body>
  <div id="app">
    <h3>Vue Js Toggle DropDown</h3>
    <div class="dropdown">
      <button class="dropdown-toggle" @click="show = !show">
        Dropdown
      </button>
      <transition name="slide">
        <div class="dropdown-menu" v-if="show">
          <a class="dropdown-item" href="#">Action 1</a>
          <a class="dropdown-item" href="#">Action 2</a>
          <a class="dropdown-item" href="#">Action 3</a>
        </div>
      </transition>
    </div>
  </div>
  <script type="module">
    import { createApp } from "vue";
    createApp({
      data() {
        return {
          show: false
        }
      },
    }).mount("#app");
  </script>
  <style>
    .dropdown {
      position: relative;
    }

.dropdown-toggle {
      background-color: white;
      border: 1px solid gray;
      border-radius: 5px;
      cursor: pointer;
      display: inline-block;
      padding: 10px 15px;
    }

.dropdown-menu {
      background-color: white;
      border: 1px solid gray;
      border-radius: 5px;
      box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
      position: absolute;

top: calc(100% + 10px);
      z-index: 1;
    }

.dropdown-item {
      color: gray;
      display: block;
      padding: 10px 15px;
      text-decoration: none;
    }

.dropdown-item:hover {
      background-color: lightgray;
      color: white;
    }

.slide-enter-active,
    .slide-leave-active {
      transition: all .3s ease;
    }

.slide-enter,
    .slide-leave-to {
      transform: translateY(-10px);
      opacity: 0;
    }
  </style>
</body>
</head>
</html>