van-nav-bar标签为什么不生效,在中间显示,不在最上面。?
<template>
<van-nav-bar
left-text="返回"
right-text="按钮"
left-arrow
@click-left="onClickLeft"
@click-right="onClickRight"
>
<template #right>
<van-icon name="search" size="18"/>
</template>
</van-nav-bar>
</template>
App.vue代码
<script setup lang="ts">
import BasicLayout from "./layouts/BasicLayout.vue";
</script>
<template>
<BasicLayout/>
</template>
<style>
</style>
显示效果