Function max_size 

pub fn max_size(child: impl IntoUiNode, max_size: impl IntoVar<Size>) -> UiNode

P Maximum size of the widget.

The widget size can be smaller then this but not larger. Relative values are computed from the constraints maximum bounded size.

This property does not force the maximum constrained size, the max_size is only used in a dimension if it is less then the constrained maximum, or the maximum was not constrained.

This property disables inline layout for the widget.

max_width and max_height

You can use the max_width and max_height properties to only set the maximum size of one dimension.