New lesson

import React, { Component } from "react";
import { makeGridGallery } from "../helpers";

const property = "grid-template-columns";
const defaults = `grid-template-areas: 'header header' 'sidebar content' 'sidebar content' `;

const firstChildProp = "grid-area";
const firstChildCases = ["header", "sidebar", "content", "1 / 2 / 3 / 5"];

export default makeGridGallery(
  null,
  property,
  defaults,
  null,
  firstChildProp,
  firstChildCases
);