如何修改Tabs组件的css包装规则，使Material-UI中垂直页签的文本靠左对齐？

import { withStyles } from '@material-ui/core/styles';
import Tabs from '@material-ui/core/Tabs';

const styles = theme => ({
  tabsRoot: {
    textAlign: 'left',
  },
});

const CustomTabs = withStyles(styles)(Tabs);

<CustomTabs value={value} onChange={handleChange} className={classes.tabsRoot}>
  {/* Tab组件 */}
</CustomTabs>