blockSpacing property
Vertical space between blocks — paragraphs, headings, lists, code, tables and the rest — in logical pixels at a text scale of 1. It grows with the text scale, so the gap stays in proportion when a reader enlarges text.
Defaults to one empty line: 1.15 × the font size, 16 pixels at the default 14. Extra blank lines in the source never add more; three or ten in a row give the same single gap. A block's own margin or padding, such as BlockQuoteStyle.margin, is added on top.
Implementation
final double? blockSpacing;