更新

package.json

@@ -20,6 +20,8 @@
     "@vue/cli-plugin-router": "~5.0.0",
     "@vue/cli-service": "~5.0.0",
     "babel-plugin-import": "^1.13.6",
+    "less": "^4.1.3",
+    "less-loader": "^11.1.0",
     "postcss": "^8.4.21",
     "postcss-pxtorem": "^6.0.0"
   }

src/main.js

@@ -3,8 +3,24 @@ import App from './App.vue';
 import router from './router';
 import './styles/index.css';
 
-import { NavBar,Button,Form, Field, CellGroup,Tabbar, TabbarItem,Icon,Toast} from 'vant';
+import { NavBar, Button, Form, Field, CellGroup, Tabbar, TabbarItem, Icon, Toast, Row, Col, Tab, Tabs } from 'vant';
 import 'vant/lib/index.css';
 import store from './store';
 
-createApp(App).use(router).use(NavBar).use(Button).use(Form).use(Field).use(CellGroup).use(store).use(TabbarItem).use(Tabbar).use(Icon).use(Toast).mount('#app')
+createApp(App)
+    .use(router)
+    .use(NavBar)
+    .use(Button)
+    .use(Form)
+    .use(Field)
+    .use(CellGroup)
+    .use(store)
+    .use(TabbarItem)
+    .use(Tabbar)
+    .use(Icon)
+    .use(Toast)
+    .use(Row)
+    .use(Col)
+    .use(Tab)
+    .use(Tabs)
+    .mount('#app')