Styled Components v4 : injectGlobal -> createGlobalStyle example

App.js

import { createGlobalStyle } from "styled-components"

const GlobalStyle = createGlobalStyle`
  body {
    padding: 0;
    margin: 0;
  }
  `;
  
class App extends Component {
  render() {
    return (
      <Container>
        <GlobalStyle/>
       </Container>
      );
     }
    }