text: import React from 'react';
  import PropTypes from 'prop-types';
  import { StaticQuery, graphql } from 'gatsby';
  
  import Header from './header';
  import Container from './container';
  import './layout.css';
  
  const Layout = ({ children }) => (
    <StaticQuery
      query = {graphql`
        query SiteTitleQuery {
          site {
            siteMetadata {
              title
            }
          }
        }
      `}
  
      render={data => (
        <>
          <Header
            siteTitle={data.site.siteMetadata.title}
          />
          <Container>
            {children}
          </Container>
        </>
      )}
    />
  );
  
  Layout.propTypes = {
    children: PropTypes.node.isRequired,
  };
  
  export default Layout;
  