There were duelling proposals floating around for adding support for masonry-style layouts in CSS. In one corner is a proposal that extends the existing CSS Grid specification. In the other corner is a second proposal that sets up masonry as a standalone module. Well, not until recently. Now, there are three proposals with Apple WebKit’s “Item Flow” as the third option. The first two sides make strong points, and the third one merges them into one, all of which you will learn about in this article.