MVVM for Multi Platforms

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Style x:Key="textBlockStyle" TargetType="{x:Type TextBlock}">
        <Setter Property="FontSize" Value="14" />
        <Setter Property="FontFamily" Value="Verdana" />
        <Setter Property="Margin" Value="5,5,5,5" />
        <Setter Property="HorizontalAlignment" Value="Left" />
        <Setter Property="VerticalAlignment" Value="Top" />                
    </Style>
    <Style TargetType="{x:Type TextBox}">
        <Setter Property="FontSize" Value="14" />
        <Setter Property="FontFamily" Value="Times New Roman" />
        <Setter Property="Margin" Value="0,5,5,0" />
    </Style>
    <Style x:Key="editWindowStyle" TargetType="{x:Type Window}">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type Window}">
                    <Border BorderBrush="DarkGray" BorderThickness="15,15,15,0">
                        <Grid Background="White">
                            <Grid.Resources>
                                <Style TargetType="{x:Type Button}">
                                    <Setter Property="HorizontalAlignment" Value="Right" />
                                    <Setter Property="Height" Value="25" />
                                    <Setter Property="VerticalAlignment" Value="Center" />
                                    <Setter Property="Margin" Value="0,5,0,0" />
                                </Style>
                                <Style TargetType="{x:Type StackPanel}">
                                    <Setter Property="Background" Value="DarkGray" />
                                </Style>
                            </Grid.Resources>
                            <Grid.RowDefinitions>
                                <RowDefinition />
                                <RowDefinition Height="35" />
                            </Grid.RowDefinitions>
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition />
                                <ColumnDefinition Width="50" />
                            </Grid.ColumnDefinitions>
                            <AdornerDecorator Grid.Row="0" Grid.ColumnSpan="2">
                                <ContentPresenter />
                            </AdornerDecorator>
                            <StackPanel Grid.Row="1" Grid.Column="0">
                                <Button Content="Save" x:Name="saveButton" />
                            </StackPanel>
                            <StackPanel Grid.Row="1" Grid.Column="1">
                                <Button Content="Cancel" x:Name="cancelButton" />
                            </StackPanel>
                        </Grid>
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
    <Style x:Key="columnStyle" TargetType="{x:Type ColumnDefinition}">
        <Setter Property="Width" Value="200" />
    </Style>
    <Style x:Key="rowStyle" TargetType="{x:Type RowDefinition}">
        <Setter Property="Height" Value="50" />
    </Style>
</ResourceDictionary>