PowerToys/Wox/Msg.xaml

<Window x:Class="Wox.Msg"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Background="#ebebeb"
        Topmost="True"
        SizeToContent="Height"
        ResizeMode="NoResize"
        WindowStyle="None"
        ShowInTaskbar="False"
        Title="Msg" Height="60" Width="420">
    <Window.Triggers>
        <EventTrigger RoutedEvent="Window.Loaded">
            <BeginStoryboard>
                <Storyboard>
                    <DoubleAnimation x:Name="showAnimation" Duration="0:0:0.3" Storyboard.TargetProperty="Top"
                                     AccelerationRatio="0.2" />
                </Storyboard>
            </BeginStoryboard>
        </EventTrigger>

    </Window.Triggers>
    <Grid HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Margin="5">
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="32" />
            <ColumnDefinition />
            <ColumnDefinition Width="2.852" />
            <ColumnDefinition Width="13.148"/>
        </Grid.ColumnDefinitions>
        <Image x:Name="imgIco" Width="32" Height="32" HorizontalAlignment="Left" Margin="0,9" />
        <Grid HorizontalAlignment="Stretch" Margin="5 0 0 0" Grid.Column="1" VerticalAlignment="Stretch">
            <Grid.RowDefinitions>
                <RowDefinition />
                <RowDefinition />
            </Grid.RowDefinitions>
            <TextBlock x:Name="tbTitle" FontSize="16" Foreground="#37392c" FontWeight="Medium">Title</TextBlock>
            <TextBlock Grid.Row="1" Foreground="#8e94a4" x:Name="tbSubTitle">sdfdsf</TextBlock>
        </Grid>
        <Image x:Name="imgClose" Grid.Column="2" Cursor="Hand" Width="16" VerticalAlignment="Top"
               HorizontalAlignment="Right" Grid.ColumnSpan="2" />
    </Grid>
</Window>