I could be interesting to compare that to the Android/iOS/HTML5 equivalent. Basically this XAML does 3 things: - declare 2 states: narrowState for windows sma

I could be interesting to compare that to the Android/iOS/HTML5 equivalent. Basically this XAML does 3 things: - declare 2 states: narrowState for windows smaller than 640px widestate for windows wider >= 641px - set the layout stacking strategy of a container to Vertical when in narrowState - set a top margin of a button to 4px when in narrowState (not sure this is relevant for this sample)