content: import React from 'react';
  import PropTypes from 'prop-types';
  import { withStyles } from '@material-ui/core/styles';
  import Tabs from '@material-ui/core/Tabs';
  import Tab from '@material-ui/core/Tab';
  import Typography from '@material-ui/core/Typography';
  
  const styles = theme => ({
    root: {
      flexGrow: 1,
      backgroundColor: theme.palette.background.paper,
    },
    tabsRoot: {
      borderBottom: '1px solid #e8e8e8',
    },
    tabsIndicator: {
      backgroundColor: '#1890ff',
    },
    tabRoot: {
      textTransform: 'initial',
      minWidth: 72,
      fontWeight: theme.typography.fontWeightRegular,
      marginRight: theme.spacing.unit * 4,
      fontFamily: [
        '-apple-system',
        'BlinkMacSystemFont',
        '"Segoe UI"',
        'Roboto',
        '"Helvetica Neue"',
        'Arial',
        'sans-serif',
        '"Apple Color Emoji"',
        '"Segoe UI Emoji"',
        '"Segoe UI Symbol"',
      ].join(','),
      '&:hover': {
        color: '#40a9ff',
        opacity: 1,
      },
      '&$tabSelected': {
        color: '#1890ff',
        fontWeight: theme.typography.fontWeightMedium,
      },
      '&:focus': {
        color: '#40a9ff',
      },
    },
    tabSelected: {},
    typography: {
      padding: theme.spacing.unit * 3,
    },
  });
  
  class CustomizedTabs extends React.Component {
    state = {
      value: 0,
    };
  
    handleChange = (event, value) => {
      this.setState({ value });
    };
  
    render() {
      const { classes } = this.props;
      const { value } = this.state;
  
      return (
        <div className={classes.root}>
          <Tabs
            value={value}
            onChange={this.handleChange}
            classes={{ root: classes.tabsRoot, indicator: classes.tabsIndicator }}
          >
            <Tab
              disableRipple
              classes={{ root: classes.tabRoot, selected: classes.tabSelected }}
              label="Tab 1"
            />
            <Tab
              disableRipple
              classes={{ root: classes.tabRoot, selected: classes.tabSelected }}
              label="Tab 2"
            />
            <Tab
              disableRipple
              classes={{ root: classes.tabRoot, selected: classes.tabSelected }}
              label="Tab 3"
            />
          </Tabs>
          <Typography className={classes.typography}>Ant Design UI powered by Material-UI</Typography>
        </div>
      );
    }
  }
  
  CustomizedTabs.propTypes = {
    classes: PropTypes.object.isRequired,
  };
  
  export default withStyles(styles)(CustomizedTabs);
  