They appear to be alone about supporting grid-based layouts, and share experimental support with Webkit for regions, exclusions and shapes. (I'm just going by

They appear to be alone about supporting grid-based layouts, and share experimental support with Webkit for regions, exclusions and shapes. (I'm just going by https://en.wikipedia.org/wiki/Comparison_of_layout_engines_%28Cascading_Style_Sheets%29 https://en.wikipedia.org/wiki/Comparison_of_layout_engines_%... , I haven't had the time to stay fully up to date on this lately either)