vue-project/src/App.vue

<template>
  <div id="app">
    <!-- <img src="./assets/logo.png"> -->
    <router-view/>
  </div>
</template>

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

<style>
html,body{
  height: 100%;
}
#app {
  font-family: 'Avenir', Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  min-width: 1365px;
  margin: 0 auto;
  height: 100%;
  background-color: #eaebf0;
}
</style>