purchase/purchase_ao/src/App.vue

<template>
  <div id="app">
    <router-view />
  </div>
</template>

<script>
export default {
  name: 'App'
}
</script>

<style>
.app-main{
  padding:20px 10px;
  background-color: #f3f3f3;
}
</style>