What do they mean in flutter by 'cross axis'?
For a column the main axis is vertical and the cross axis is horizontal (90° to the main axis).
For a row the main axis is horizontal and the cross axis is vertical (90° to the main axis).
MainAxis
is the axis for the Widget in which it is supposed to scroll.
CrossAxis
is the one which is perpendicular to MainAxis.
For Row:
mainAxisAlignment
= Horizontal AxiscrossAxisAlignment
= Vertical Axis
For Column:
mainAxisAlignment
= Vertical AxiscrossAxisAlignment
= Horizontal Axis
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