mdk-01.02-coffemachine/coffe/App.xaml

<Application x:Class="coffe.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:local="clr-namespace:coffe"
             StartupUri="MainWindow.xaml">
    <Application.Resources>
        <FontFamily x:Key="hitterlove">pack://appliction;,,,FolderFont/Hitterlove.otf#Hitterlove</FontFamily>
        <FontFamily x:Key="vpch2">pack://appliction;,,,FolderFont/VPCH2.otf#VPCH2</FontFamily>
        
        <Style x:Key="CustomWindowChrome" TargetType="{x:Type Window}">
            <Setter Property="AllowsTransparency" Value="True"></Setter>
            <Setter Property="WindowStyle" Value="None"></Setter>
            <Setter Property="Background" Value="Transparent"></Setter>

            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="Window">
                        <Border Name="newBorder" CornerRadius="100" Background="#e07a5f" BorderBrush="#9A381D" BorderThickness="1 1 10 15">
                            <Grid>
                                <Grid.RowDefinitions>
                                    <RowDefinition Height="Auto" />
                                    <RowDefinition />
                                    <RowDefinition Height="Auto" />
                                </Grid.RowDefinitions>
                                <!--Заголовок-->
                                <!--Основное содержание-->
                                <Border Grid.Row="1">
                                    <AdornerDecorator>
                                        <ContentPresenter />
                                    </AdornerDecorator>
                                </Border>
                                <!--Элемент захвата и изменения размера - работает только для прямоугольных окон-->
                                <ResizeGrip Grid.Row="2" HorizontalAlignment="Right" VerticalAlignment="Bottom" Visibility="Collapsed" IsTabStop="False" />
                            </Grid>
                        </Border>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>         
    </Application.Resources>
</Application>