Tabbed Section in Vue using class binding

VueTabs.vue

<template>
  <div id="tabs" class="container">

      <div class="tabs">
          <a v-on:click="activetab=1" v-bind:class="[ activetab === 1 ? 'active' : '' ]">Tab 1</a>
          <a v-on:click="activetab=2" v-bind:class="[ activetab === 2 ? 'active' : '' ]">Tab 2</a>
          <a v-on:click="activetab=3" v-bind:class="[ activetab === 3 ? 'active' : '' ]">Tab 3</a>
      </div>

      <div class="content">
          <div v-if="activetab === 1" class="tabcontent">
              Content for tab one
          </div>
          <div v-if="activetab === 2" class="tabcontent">
              Content for tab two
          </div>
          <div v-if="activetab === 3" class="tabcontent">
              Content for tab three
          </div>
      </div>

  </div>
</template>

<script>
  data() {
    return {
      activetab: 1
    };
  }  
</script>


<style lang="scss" scoped>
.container {  
    max-width: 620px; 
    min-width: 420px;
    margin: 40px auto;
    font-family: "Nunito Sans", Arial, Helvetica, sans-serif;
    color: #888;
}

/* Style the tabs */
.tabs {
    overflow: hidden;
    margin-left: 20px;
    margin-bottom: -2px; // hide bottom border
}

.tabs ul {
    list-style-type: none;
    margin-left: 20px;
}

.tabs a{
    float: left;
    cursor: pointer;
    padding: 12px 24px;
    transition: background-color 0.2s;
    border: 1px solid #ccc;
    border-right: none;
    background-color: #f1f1f1;
    border-radius: 10px 10px 0 0;
    font-weight: bold;
}
.tabs a:last-child { 
    border-right: 1px solid #ccc;
}

/* Change background color of tabs on hover */
.tabs a:hover {
    background-color: #aaa;
    color: #fff;
}

/* Styling for active tab */
.tabs a.active {
    background-color: #fff;
    color: #484848;
    border-bottom: 2px solid #fff;
    cursor: default;
}

/* Style the tab content */
.tabcontent {
    padding: 30px;
    border: 1px solid #ccc;
    border-radius: 10px;
    box-shadow: 3px 3px 6px #e1e1e1
}
</style>