父级组件引入子组件不显示

<template>

<div>

<nav-header></nav-header>

<nav-main></nav-main>

<nav-footer></nav-footer>

</div>

</template>

<script>

import NavHeader from '@/components/navHeader/NavHeader.vue';

import NavMain from '@/components/navMain/NavMain.vue';

import NavFooter from '@/components/navFooter/NavFooter.vue';

import {defineComponent} from 'vue';

export default defineComponent({

name:'Home',

components:{

NavHeader,

NavMain,

NavFooter

},

setup(){

},

})

</script>

<style scoped lang="scss">

</style>