更新

admin/src/components/HelloWorld.vue

@@ -1,5 +1,6 @@
 <template>
   <div class="hello">
+    <el-button type="primary">主要按钮</el-button>
     <h1>{{ msg }}</h1>
     <h2>Essential Links</h2>
     <ul>
@@ -84,30 +85,33 @@
 </template>
 
 <script>
-export default {
-  name: 'HelloWorld',
-  data () {
-    return {
-      msg: 'Welcome to Your Vue.js App'
+  export default {
+    name: 'HelloWorld',
+    data() {
+      return {
+        msg: 'Welcome to Your Vue.js App'
+      }
     }
   }
-}
 </script>
 
 <!-- Add "scoped" attribute to limit CSS to this component only -->
 <style scoped>
-h1, h2 {
-  font-weight: normal;
-}
-ul {
-  list-style-type: none;
-  padding: 0;
-}
-li {
-  display: inline-block;
-  margin: 0 10px;
-}
-a {
-  color: #42b983;
-}
+  h1, h2 {
+    font-weight: normal;
+  }
+
+  ul {
+    list-style-type: none;
+    padding: 0;
+  }
+
+  li {
+    display: inline-block;
+    margin: 0 10px;
+  }
+
+  a {
+    color: #42b983;
+  }
 </style>