update 树样式修改

src/assets/less/common.less

@@ -430,7 +430,7 @@
 }
 
 .page-tree-box-has-search {
-  height: calc(100% - 32px);
+  height: calc(100% - 40px);
 }
 
 /*展开收起按钮颜色*/

src/views/standardRegulationLibrary/domesticStandard/DomesticStandardList.vue

@@ -7,6 +7,7 @@
                       :placeholder="$t('standardRegulationLibrary.domesticStandard.treeSearchPlaceholder')"
                       @search="handleTreeSearch" />
       <div class="page-tree-box page-tree-box-has-search">
+        <a-spin :spinning="treeLoading">
           <a-tree :show-line="true" :show-icon="true" :tree-data="treeData" :selected-keys="selectedTreeKeys">
             <a-icon type="folder" slot="folder" class="tree-icon" />
             <a-icon type="file" slot="file" class="tree-icon" />
@@ -48,6 +49,7 @@
               </div>
             </template>
           </a-tree>
+        </a-spin>
       </div>
     </div>
     <!--    表格部分-->