content: import React from 'react';
  
  import MuiThemeProvider from 'material-ui/styles/MuiThemeProvider';
  import AppBar from 'material-ui/AppBar';
  import IconButton from 'material-ui/IconButton';
  import NavigationMenu from 'material-ui/svg-icons/navigation/menu';
  
  const Header = ({ height, toggleMenu }) => {
    return (
      <MuiThemeProvider>
        <AppBar
          iconElementLeft={
            <IconButton onClick={toggleMenu}>
              <NavigationMenu />
            </IconButton>
          }
          style={{ height }}
          title="Generation Stores Map"
        />
      </MuiThemeProvider>
    );
  };
  
  export default Header;
  