The below image demonstrates my issue; I want the green spacers to fill the remaining white space. The code which produces the layout is shown at the bottom. The issue here is related to the
max_height of the red spacer. If it is not set, the whole browser windows is filled by the green and red spacers as expected.
column( Spacer(background='red', max_height=50, margin=1), row( Spacer(background='green', margin=1), Spacer(background='green', margin=1), sizing_mode='stretch_both' ), sizing_mode='stretch_both' )