We're making progress! In the third part of this six part series, we started getting some content on the page by creating the header component that will sit at the top of our home page and single photo pages. Right now, if you change into your photo directory and run gatsby develop, you should see something like this: In this fourth part, we'll put together the grid layout for the homepage. Then, all we'll have left to do is build the individual photo pages, add social tags, and deploy. …