text: import React, { PureComponent } from "react";
  import { Link } from "gatsby";
  
  import css from "./header.module.css";
  
  export default class Header extends PureComponent {
    render() {
      const { siteTitle } = this.props;
      return (
        <div className={css.background}>
          <div className={css.container}>
            <h1 className={css.h1}>
              <Link className={css.link} to="/">
                {siteTitle}
              </Link>
            </h1>
          </div>
        </div>
      );
    }
  }
  