> right, but that's the old, divitis way of doing it. using grid this way let's you set all the children to the content width and then selectively break out of that with just a class on the child element (without extra divs).

I think you may have misunderstood my comment. I’m saying you can use the grid technique described in the article and nest the technique to achieve similar results within sub-sections. Note that I used the classes defined in the article. My stated use case is exactly “usually just for the background”. My HTML only differs from the article’s example HTML by adding the content class to the full-width element, and a class which would hypothetically add the background to that element. I didn’t add any extra divs.