App.vue

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

<script>

export default {
  name: "App",
  methods: {
   
  },
  data() {
    return {};
  }
};
</script>
  .el-container{

  }
<style>
html,body,#app{
  height:98%
}
</style>