text: // components/layout.js
  import Header from './header'
  const Layout = props => (
      <div>
          <Header/>
          {props.children}
          <style jsx>{`
          div{
              margin: 20px;
              padding: 20px;
              border: 1px solid #DDD;
              backgroundColor: #ddd;
          }
          `}</style>
      </div>
  );
  export default Layout;