I had to implement a masonry layout recently. The answer is no, however it is actively being explored at the W3C - https://github.com/w3c/csswg-drafts/issues/94

I had to implement a masonry layout recently. The answer is no, however it is actively being explored at the W3C - https://github.com/w3c/csswg-drafts/issues/945 https://github.com/w3c/csswg-drafts/issues/945