cra-template-jam/template/src/styles/global.ts

A quick start Create React App template with React Router, Redux Toolkit, TypeScript, Styled Components and custom ESlint configurations

import { createGlobalStyle } from 'styled-components';

export default createGlobalStyle`
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

code {
  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
    monospace;
}
`;