How to style nested elements in react with styled-components?

Question

I'm using styled components and would like to style a child inside a div via nested css. See my demo here

const styles = theme => ({
  root: {
    ...theme.typography.button,
    backgroundColor: theme.palette.common.white,
    padding: theme.spacing.unit,
    ">span": {
      background: "red"
    }
  }
});

function TypographyTheme(props) {
  return (
    <div className={props.classes.root}>
      <h1>
        <span>{"This div's text looks like that of a button."}</span>
      </h1>
    </div>
  );
}

Answer 1

It looks like JSS syntax, not styled component.

Change this:

const styles = theme => ({
  root: {
    ...theme.typography.button,
    backgroundColor: theme.palette.common.white,
    padding: theme.spacing.unit,
    ">span": {
      background: "red"
    }
  }
});

With this:

const styles = theme => ({
  root: {
    ...theme.typography.button,
    backgroundColor: theme.palette.common.white,
    padding: theme.spacing.unit,
    "& span": {
      background: "red"
    }
  }
});

or if you wouldn't that change all nested spans

const styles = theme => ({
  root: {
    ...theme.typography.button,
    backgroundColor: theme.palette.common.white,
    padding: theme.spacing.unit,
    "& > h1 > span": {
      background: "red"
    }
  }
});

Try this codesandbox https://codesandbox.io/s/vm3qnmj75l

For reference: http://cssinjs.org/jss-nested/