stac posittion to bottom in flutter code example

Example 1: align bottom flutter

// Use Align if have only one child, if have multiple:
return Column(
  crossAxisAlignment: CrossAxisAlignment.center,
  mainAxisSize: MainAxisSize.max,
  mainAxisAlignment: MainAxisAlignment.end,
  children: <Widget>[
      //your elements here
  ],
);

Example 2: how to give bottom padding in Listview in flutter

// Add a bottom padding to Listview in Flutter
padding: const EdgeInsets.only(bottom: kFloatingActionButtonMargin + 48)