样式调整

src/components/app-van-select/app-van-select.vue

 <template>
-<van-dropdown-menu active-color="#ee0a24" :class="showTitle === title?'':'dropdown-menu-ative'" class="dropdown-menu">
+<van-dropdown-menu active-color="#323233" :class="showTitle === title?'':'dropdown-menu-ative'" class="dropdown-menu">
   <van-dropdown-item :title="showTitle" ref="item" >
       <div class="dropdown-box">
       <div v-for="(item,index) in items" :key="index" class="dropdown-item" @click="itemClick(item)">
@@ -111,7 +111,9 @@ export default class AppVanSelect extends Vue {
      * @memberof AppVanMenu
      */
     public onConfirm() {
+        if(this.selectItem.label){
          this.showTitle = this.selectItem.label;
+        }
          this.closeDropdown();
     }
 
@@ -147,6 +149,7 @@ export default class AppVanSelect extends Vue {
     border: solid #ccc 1px;
     border-radius: 30px;
     margin: 5px;
+    background: #f2f2f2;
     .van-ellipsis {
     padding-right: 15px;
 }