fix button list rule

src/components/PageHeader/demo/standard.md

@@ -8,9 +8,10 @@ title: Standard
 ````jsx
 import PageHeader from 'ant-design-pro/lib/PageHeader';
 import DescriptionList from 'ant-design-pro/lib/DescriptionList';
-import { Button, Menu, Icon, Row, Col } from 'antd';
+import { Button, Menu, Dropdown, Icon, Row, Col } from 'antd';
 
 const { Description } = DescriptionList;
+const ButtonGroup = Button.Group;
 
 const description = (
   <DescriptionList col="2">
@@ -31,8 +32,13 @@ const menu = (
 
 const action = (
   <div>
-    <Button>操作</Button>
-    <Button>操作</Button>
+    <ButtonGroup>
+      <Button>操作</Button>
+      <Button>操作</Button>
+      <Dropdown overlay={menu} placement="bottomRight">
+        <Button><Icon type="ellipsis" /></Button>
+      </Dropdown>
+    </ButtonGroup>
     <Button type="primary">主操作</Button>
   </div>
 );

src/components/PageHeader/index.less

@@ -118,10 +118,14 @@
   .pageHeader {
     .action {
       :global {
-        .ant-btn-group, :not(.ant-btn-group) .ant-btn {
+        .ant-btn-group, .ant-btn {
           display: block;
           margin-bottom: 8px;
         }
+        .ant-btn-group > .ant-btn {
+          display: inline-block;
+          margin-bottom: 0;
+        }
       }
     }
   }

src/routes/Profile/AdvancedProfile.js

@@ -10,6 +10,7 @@ import styles from './AdvancedProfile.less';
 
 const { Step } = Steps;
 const { Description } = DescriptionList;
+const ButtonGroup = Button.Group;
 
 const getWindowWidth = () => (window.innerWidth || document.documentElement.clientWidth);
 
@@ -23,13 +24,13 @@ const menu = (
 
 const action = (
   <div>
-    <Button>操作</Button>
-    <Button>操作</Button>
-    <Dropdown overlay={menu}>
-      <Button>
-        更多 <Icon type="down" />
-      </Button>
-    </Dropdown>
+    <ButtonGroup>
+      <Button>操作</Button>
+      <Button>操作</Button>
+      <Dropdown overlay={menu} placement="bottomRight">
+        <Button><Icon type="ellipsis" /></Button>
+      </Dropdown>
+    </ButtonGroup>
     <Button type="primary">主操作</Button>
   </div>
 );