use less var

src/components/GlobalHeader/index.js

 import React, { PureComponent } from 'react';
 import { Icon, Divider } from 'antd';
 import { Link } from 'dva/router';
+import Debounce from 'lodash-decorators/debounce';
 import styles from './index.less';
 import RightContent from './RightContent';
 

src/components/SiderMenu/index.less

@@ -33,9 +33,9 @@
     background-color: white;
     .logo {
       background: white;
-      border: 1px solid #e9e9e9;
+      border-bottom: 1px solid @border-color-split;
       h1 {
-        color: #1890ff;
+        color: @primary-color;
       }
     }
   }