trailing property
The trailing amount of pixels to pad a Span by.
If the Span is a row and the vertical Axis is not reversed, this offset will be applied below the row. If the vertical Axis is reversed, this will be applied above the row.
If the Span is a column and the horizontal Axis is not reversed, this offset will be applied to the right the column. If the horizontal Axis is reversed, this will be applied to the left of the column.
Implementation
final double trailing;