App.vue
FoodItem.vue
main.js
 
<template>
  <h1>Food</h1>
  <food-item/>
  <food-item/>
  <food-item/>
</template>

<script></script>

<style>
  #app > div {
        border: dashed black 1px;
        display: inline-block;
        margin: 10px;
        padding: 10px;
        background-color: lightgreen;
    }
</style>                  
<template>
    <div>
        <h2>{{ name }}</h2>
        <p>{{ message }}</p>
    </div>
</template>

<script>
export default {
    data() {
        return {
            name: 'Apples',
            message: 'I like apples'
        }
    }
};
</script>

<style></style>                  
import { createApp } from 'vue'

import App from './App.vue'
import FoodItem from './components/FoodItem.vue'

const app = createApp(App)

app.component('food-item', FoodItem)

app.mount('#app')
                  
http://localhost:5173/