Move the container class to vue template.

[hiroxto]

Move the container class to vue template.

Old

<div class="container">
  <div id="app">
  </div>
</div>

new Vue({
  el: '#app',
  render: h => h(App),
});

Change to

<div id="app">
</div>

new Vue({
  el: '#app',
  template: `
    <div class="container">
      <App></App>
    </div>
  `,
  components: {
    App,
  },
});