Vue Js Change Tab Active Color

<!DOCTYPE html>
<html>
<head>
  <script src="https://unpkg.com/vue@3.2.12/dist/vue.global.js"></script>
</head>
<body>
  <div id="app">
    <h3>Vue Js Change tab active color</h3>
    <div class="tabs">
      <button v-for="tab in tabs" :key="tab" :class="[activeTab === tab ? 'active-tab' : '', 'tab-button']"
        @click="activeTab = tab">{{ tab }}</button>
    </div>
  </div>
  <script type="module">
    const app = Vue.createApp({
      data() {
        return {
          activeTab: 'tab1', // Assuming 'tab1' is the initially active tab
          tabs: ['tab1', 'tab2', 'tab3'], // Array of tab names
        };
      },
    });
    app.mount('#app');
  </script>
  <style>
    #app {
      text-align: center;
      margin-top: 20px;
    }

h3 {
      font-size: 18px;
      margin-bottom: 10px;
    }

.tabs {
      display: flex;
      justify-content: center;
      margin-top: 20px;
    }

.tab-button {
      padding: 8px 16px;
      background-color: transparent;
      border: none;
      border-bottom: 2px solid #f2f2f2;
      margin-right: 10px;
      cursor: pointer;
      font-size: 16px;
      color: #555;
    }

.tab-button.active-tab {
      background-color: #f1f1f1;
      border-bottom: 2px solid #007bff;
      color: #007bff;
    }

.tab-button:focus {
      outline: none;
    }
  </style>
</body>

</html>