void Build() => Content = RelativeLayout( ReferringSitesWithRefresh .Constrain().X(0).Y(titleRowHeight) .Width(p => p.Width).Height(p => p.Height - titleRowHeight), iOS ? TitleShadow .Constrain().X(0).Y(0) .Width(p => p.Width).Height(titleRowHeight) : null, iOS ? TitleText .Constrain().X(10).Y(0) : null, iOS ? CloseButton .Constrain().X(p => p.Width - p.WidthOf(closeButton) - 10).Y(0) .Width(p => p.WidthOf(closeButton)) : null, storeRatingRequest .Constrain().X(0).Y(p => p.Height - p.HeightOf(storeRatingRequest)) .Width(p => p.Width) );