<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:po="http://schemas.microsoft.com/winfx/2006/xaml/presentation/options">

    <DropShadowEffect x:Key="DropShadowBrush"
                      BlurRadius="6"
                      Direction="330"
                      Opacity="0.3"
                      ShadowDepth="0"
                      po:Freeze="True" />

</ResourceDictionary>