justifyContent property
The main-axis alignment for all child items.
Controls how items are distributed along the main axis when there is extra space available.
Common values: BoxAlignmentBase.start, BoxAlignmentBase.center, BoxAlignmentBase.end, BoxAlignmentBase.spaceBetween, BoxAlignmentBase.spaceAround.
Defaults to BoxAlignmentBase.start.
Implementation
final BoxAlignmentBase justifyContent;