text: import React,{Component} from 'react';
  import { Layout} from 'antd';
  import ContentMain from '../../components/ContentMain';
  import SiderNav from '../../components/SiderNav';
  import Avatar from '../Avatar'
  import './index.css';
  const { Header, Content, Footer} = Layout;
  export default class Index extends Component {
    render() {
      return (
          <Layout>
              <SiderNav/>
              <Layout>
                  <Header style={{ background: '#fff', padding: 0 }} >
                      <Avatar/>
                  </Header>
                  <Content style={{ margin: '24px 16px 0' }}>
                      <ContentMain/>
                      <Footer style={{ textAlign: 'center'}}>videonline-admin system ©2020 Created by LiuYuQi</Footer>
                  </Content>              
              </Layout>
          </Layout>
      );
    }
  }