Tiles use display: flex - Squares use display: block.
TILES are "variable height":
Are part of a flex-box row
Height of a tile is based on the content / formatter
All tiles in a row will have the same height decause of flex
If height of tiles on a row is variable, flex will compensate for this
SQUARES require "fixed height":
Are not in flex-box row, use traditional box model
Usually do "float" left
Height must be set in the square itself as fixed height