Vue实现导航栏的显示开关控制

<template>
 <div class="space_header_text"> 
  <ul>
 <router-link to="/order">
 <li class="nav-item">
  <div :class="['iconfont','interval','iconClass']">&#xe617;</div>
    订单
 </li>
 </router-link>
 <router-link to="/account">
 <li class="nav-item">
  <div :class="['iconfont','interval','iconClass']">&#xe64a;</div>
     账户
 </li>
 </router-link>
 <router-link to="/self">
 <li class="nav-item">
  <div :class="['iconfont','interval','iconClass']">&#xe61e;</div>
     个人中心
 </li>
 </router-link> 
 </ul>
  
 </div>
</template>
<script> 
export default{ 
 name:'space'
}
</script>
<style scoped> 
.space_header_text{ 
 position:fixed;
 z-index:99;
 width: 100%; 
}
.nav-item{
 float: left; 
 width: 33.3%;
 text-align: center;
 margin: 0 0 .16rem 0;
}
.iconClass{
 margin: .16rem auto;
}

</style>