text: import React, { Component } from 'react';
  import styled, { css } from 'styled-components';
  
  const MenuContainer = styled.div`
    width: 200px;
    height: 100%;
    background: #e5e5e5;
  `;
  class Header extends Component {
    constructor(props) {
      super(props);
      this.state = {
      };
    }
    render() {
      return (
        <MenuContainer id="menu">
          <ul>
            <li>menu 1</li>
            <li className="different">menu 2</li>
            <li>menu 3</li>
          </ul>
        </MenuContainer>
      );
    }
  }
  
  Header.propTypes = {
  }
  
  export default Header;
  