body {
  margin: 0;
  font-family: '-apple-system', 'BlinkMacSystemFont', 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  font-size: calc(10px + 2vmin);
}