<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" HorizontalAlignment="Center" VerticalAlignment="Center"> <StackPanel Height="100" Background="Yellow" Orientation="Horizontal"> <Button>Foo</Button> <Button Height="30">Bar</Button> <Button Height="195">Quux</Button> </StackPanel> </Page>