controlmymonitormanagement/ControlMyMonitorManagement/Style/MonCtrlStyle.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:local="clr-namespace:CMM.Management.Control">

    <Style TargetType="{x:Type local:MonCtrl}">
        <Setter Property="Margin" Value="10"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type local:MonCtrl}">
                    <Border Background="#44000000" CornerRadius="8" Padding="15">
                        <StackPanel Orientation="Vertical">
                            <!-- Monitor Name Header -->
                            <TextBlock Text="{Binding Mon.MonitorName, Mode=OneWay,
                                              RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type local:MonCtrl}}}"
                                       FontSize="16"
                                       FontWeight="Bold"
                                       Foreground="White"
                                       Margin="0,0,0,10"/>
                            <TextBlock Text="{Binding Mon.SerialNumber, Mode=OneWay,
                                              RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type local:MonCtrl}}}"
                                       FontSize="11"
                                       Foreground="#AAAAAA"
                                       Margin="0,0,0,15"/>
                            <!-- Dynamic controls container -->
                            <StackPanel x:Name="sp" Orientation="Vertical"/>
                        </StackPanel>
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

</ResourceDictionary>