Check out styled-components. It's 100% CSS and it's awesome. https://github.com/styled-components/styled-components https://github.com/styled-components/styled

Check out styled-components. It's 100% CSS and it's awesome. https://github.com/styled-components/styled-components https://github.com/styled-components/styled-components Edit: for the record there's nothing stopping you from using CSS files with classnames on your tags as usual, but libraries like styled-components allow you to easily scope and collocate your CSS with your components.