Style With Resource

   
    

<StackPanel xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
            xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <StackPanel.Resources>
        <Style x:Key="normal">
            <Style.Resources>
                <LinearGradientBrush x:Key="gradbrush" StartPoint="1,0" EndPoint="1,1">
                    <LinearGradientBrush.GradientStops>
                        <GradientStop Color="LightBlue" Offset="0" />
                        <GradientStop Color="Aquamarine" Offset="1" />
                    </LinearGradientBrush.GradientStops>
                </LinearGradientBrush>
            </Style.Resources>
            <Setter Property="Control.FontSize" Value="24" />
            <Setter Property="Control.HorizontalAlignment" Value="Center" />
            <Setter Property="Control.Margin" Value="24" />
            <Setter Property="Control.Background" Value="{StaticResource gradbrush}" />
        </Style>
    </StackPanel.Resources>

    <Button Style="{StaticResource normal}">
        Button Number 1
    </Button>
</StackPanel>