调整刷新按钮和popover的样式

src/view/memberGroup/memberGroupList.vue

@@ -78,12 +78,12 @@
             <el-table-column prop="peopleCover" label="覆盖人数" show-overflow-tooltip >
               <template slot="header">
                 覆盖人数
-                <el-popover placement="top-start" width="300" trigger="hover">
-                  <div>
+                <el-popover width="260" trigger="hover">
+                  <div style="color: #909399;">
                     默认显示上次页面缓存人数，可点击刷新按钮查看当页分组最新人数。
                   </div>
-                  <el-button type="text" @click="refershMember">刷新</el-button>
-                  <i slot="reference" class="el-icon-more icon-transform-nine"></i>
+<!--                  <el-button type="text" @click="refershMember">刷新</el-button>-->
+                  <i slot="reference" class="el-icon-refresh refresh" @click="refershMember"></i>
                 </el-popover>
               </template>
 
@@ -676,6 +676,13 @@ export default {
         margin-left: 10px;
       }
     }
+    .refresh {
+      color: #909399;
+      cursor: pointer;
+      &:hover {
+        color: #1890ff;
+      }
+    }
   }
 }
 </style>