message: remove responsive styles from header
diff: @@ -11,7 +11,7 @@ export const Header: React.SFC<HeaderProps> = props => {
  return (
  <Flex flexDirection="column" alignItems="center">
  - <Serif size={["5t", "8"]} mb={2} textAlign="center">
  + <Serif size="5t" mb={2} textAlign="center">
  {title}
  </Serif>
  {children}
  