How to change the style of a single component within an other component with styled-components?

Question

I'm working on an react app with styled-components and I have a component 'Navigation'. In this component are more components like , , etc. Header for example is declared like this:

const Header = styled.div` height: 48px; width: 100%; transition: all 0.5s ease-in;

Thing is that I have this Navigation component in different files and for all of them the styling is good but now I want to change the background color of the Header component in just one of those files, which is within(?) the Navigation component. How can I do that? I know that it's possible to change the styling from the Navigation component with something like const NewNav = styled(Navigation)`` but what about the Header?

Thank you in advance.

Answer 1

You can pass props through your navigation component to your header.

<NavigationExample secondary />

import styled, { css } from 'styled-components';

function NavigationExample(props) {
  const { secondary } = props;

  return (
    <Navigation>
      <Header secondary={secondary}>
        ...
      </Header>
      <Profile>
        username
      <Profile>
    </Navigation>
  );
}

const Navigation = styled.nav;

const Header = styled.header`
  /* Base styles */
  width: 100%;
  height: 60px;
  background: #222;
  color: #fff;

  ${props => props.secondary && css`
    background: #fff;
    color: #000;
  `;
`;

const Profile = styled.div``;

export default NavigationExample;

Alternatively, you can inline props in your css.

<NavigationExample backgroundColor="#222" />

const Header = styled.header`
  /* Base styles */
  width: 100%;
  height: 60px;
  background: ${props => props.backgroundColor || '#222'};
  color: ${props => props.backgroundColor ? '#000' : '#fff'}; /* Adjusting text so it's legible like the previous example */
`;