ant-design/components/layout/demo/fixed-sider.md

---
order: 7
iframe: 360
title:
  zh-CN: 固定侧边栏
  en-US: Fixed Sider
---

## zh-CN

当内容较长时，使用固定侧边栏可以提供更好的体验。

## en-US

When dealing with long content, a fixed sider can provide a better user experience.

```jsx
import { Layout, Menu } from 'antd';
import {
  AppstoreOutlined,
  BarChartOutlined,
  CloudOutlined,
  ShopOutlined,
  TeamOutlined,
  UserOutlined,
  UploadOutlined,
  VideoCameraOutlined,
} from '@ant-design/icons';

const { Header, Content, Footer, Sider } = Layout;

ReactDOM.render(
  <Layout>
    <Sider
      style={{
        overflow: 'auto',
        height: '100vh',
        position: 'fixed',
        left: 0,
      }}
    >
      <div className="logo" />
      <Menu theme="dark" mode="inline" defaultSelectedKeys={['4']}>
        <Menu.Item key="1" icon={<UserOutlined />}>
          nav 1
        </Menu.Item>
        <Menu.Item key="2" icon={<VideoCameraOutlined />}>
          nav 2
        </Menu.Item>
        <Menu.Item key="3" icon={<UploadOutlined />}>
          nav 3
        </Menu.Item>
        <Menu.Item key="4" icon={<BarChartOutlined />}>
          nav 4
        </Menu.Item>
        <Menu.Item key="5" icon={<CloudOutlined />}>
          nav 5
        </Menu.Item>
        <Menu.Item key="6" icon={<AppstoreOutlined />}>
          nav 6
        </Menu.Item>
        <Menu.Item key="7" icon={<TeamOutlined />}>
          nav 7
        </Menu.Item>
        <Menu.Item key="8" icon={<ShopOutlined />}>
          nav 8
        </Menu.Item>
      </Menu>
    </Sider>
    <Layout className="site-layout" style={{ marginLeft: 200 }}>
      <Header className="site-layout-background" style={{ padding: 0 }} />
      <Content style={{ margin: '24px 16px 0', overflow: 'initial' }}>
        <div className="site-layout-background" style={{ padding: 24, textAlign: 'center' }}>
          ...
          <br />
          Really
          <br />
          ...
          <br />
          ...
          <br />
          ...
          <br />
          long
          <br />
          ...
          <br />
          ...
          <br />
          ...
          <br />
          ...
          <br />
          ...
          <br />
          ...
          <br />
          ...
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          ...
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          ...
          <br />
          ...
          <br />
          ...
          <br />
          ...
          <br />
          ...
          <br />
          ...
          <br />
          ...
          <br />
          ...
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          ...
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          ...
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          ...
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          ...
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          ...
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          ...
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          ...
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          ...
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          ...
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          ...
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          ...
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          ...
          <br />
          ...
          <br />
          content
        </div>
      </Content>
      <Footer style={{ textAlign: 'center' }}>Ant Design ©2018 Created by Ant UED</Footer>
    </Layout>
  </Layout>,
  mountNode,
);
```

```css
#components-layout-demo-fixed-sider .logo {
  height: 32px;
  margin: 16px;
  background: rgba(255, 255, 255, 0.2);
}
.site-layout .site-layout-background {
  background: #fff;
}
```

<style>
  [data-theme="dark"] .site-layout .site-layout-background {
    background: #141414;
  }
</style>