<div id="app">     <top-view/>     <router-view/>     <footer-view/>        </div></template><script>// <top-view/>import top from '@/view/Top'import top from '@/view/Top'import footer from '@/view/Footer'export default{  name: 'App',  components:{      TopView:top,      FooterView:footer   } }</script><style lang="scss">     @import "./src/assets/sass/style.scss";</style>