content: import React from 'react';
  import { Link, IndexLink, } from 'react-router';
  import styled from 'styled-components';
  
  const Nav = styled.nav`
    color: gray;
    font-size: 20px;
    padding-top: 30px;
    text-align: center;
    font-family: Arial;
  `;
  
  const Header = () => {
    return (
      <Nav>
        <IndexLink to="/">Calculator</IndexLink>
        {" / "}
        <Link to="/frankulator">Frankulator</Link>
      </Nav>
    );
  };
  
  export default Header;
  