groupAlignment property
final
The vertical alignment for the group of destinations within the rail.
The NavigationRailDestinations are by default grouped together with the
trailing widget, due to trailingAtBottom being false. The leading
widget, can also be in the aligned group by setting leadingAtTop to
false. If these widgets are not included in the group, they are placed
at the top and bottom, respectively, of the rail and only the space
between them is considered for the alignment.
The value must be between -1.0 and 1.0.
If groupAlignment is -1.0, then the items are aligned to the top. If groupAlignment is 0.0, then the items are aligned to the center. If groupAlignment is 1.0, then the items are aligned to the bottom.
The default is -1.0.
See also:
Implementation
final double? groupAlignment;