Style targeting a specific type of element(Button)
<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"> <Page.Resources> <Style TargetType="{x:Type Button}"> <Setter Property="Width" Value="200" /> <Setter Property="Height" Value="50" /> </Style> </Page.Resources> <StackPanel> <Button Content="A Button"/> <Button Content="Another Button"/> </StackPanel> </Page>