Cannot find element: #wrap

Question

vue-cli4 修改了App.vue里的id="wrap",运行说找不到

Cannot find element: #wrap

<template>
  <div id="wrap">
    <div id="nav">
      <router-link to="/">Home</router-link> |
      <router-link to="/about">About</router-link>
    </div>
    <router-view />
  </div>
</template>

<style lang="stylus">
#wrap
  font-family 'Avenir', Helvetica, Arial, sans-serif
  -webkit-font-smoothing antialiased
  -moz-osx-font-smoothing grayscale
  text-align center
  color #2c3e50
  margin-top 60px
</style>

main.js

import Vue from "vue";
import App from "./App.vue";
import "./registerServiceWorker";
import router from "./router";
import store from "./store";

Vue.config.productionTip = false;

new Vue({
  router,
  store,
  render: h => h(App)
}).$mount("#wrap");

Answer 1

html 文件里也要改