mdk-01.02-N3/N3/App.xaml

<Application x:Class="N3.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:local="clr-namespace:N3"
             StartupUri="MainWindow.xaml">
    <Application.Resources>
        <Style x:Key="TBusually" TargetType="TextBlock">
            <Style.Setters>
                <Setter Property="HorizontalAlignment" Value="Right"/>
                <Setter Property="VerticalAlignment" Value="Bottom"/>
                <Setter Property="Padding" Value="10"/>
                <Setter Property="FontSize" Value="16"/>
                <Setter Property="FontWeight" Value="DemiBold"/>
            </Style.Setters>
        </Style>
        <Style TargetType="Button">
            <Setter Property="FontWeight" Value="DemiBold"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type Button}">
                        <Border Background="{TemplateBinding Background}" CornerRadius="5" Margin="2">
                            <ContentPresenter x:Name="contentPresenter" 
                                          Focusable="False" 
                                          HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" 
                                          Margin="{TemplateBinding Padding}" 
                                          RecognizesAccessKey="True" 
                                          SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" 
                                          VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
                        </Border>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsMouseOver" Value="True">
                                <Setter Property="Background" Value="Orange"/>
                                <Setter Property="Foreground" Value="WhiteSmoke"/>
                            </Trigger>
                            <Trigger Property="IsPressed" Value="true">
                                <Setter Property="Background" Value="Orange"/>
                                <Setter Property="Foreground" Value="WhiteSmoke"/>
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </Application.Resources>
</Application>