WPF5/WpfApp2/MainWindow.xaml

<Window x:Class="WpfApp2.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        mc:Ignorable="d"
        Title="MainWindow" Height="720"
        Width="1200"
        WindowStartupLocation="CenterScreen"
        Background="Transparent"
        AllowsTransparency="True"
        WindowStyle="None">


    <Grid>
        <Grid.Background>
            <LinearGradientBrush StartPoint="0,0" EndPoint="1,1">
                <GradientStop Color="#4E90A0" Offset="0"/>
                <GradientStop Color="#BADFE7" Offset="0.5"/>
                <GradientStop Color="#4E90A0" Offset="1"/>
            </LinearGradientBrush>
        </Grid.Background>


        <TextBlock Text="Система внутреннего учета инвестиционной компании" Foreground="#2E2E2E" FontSize="30" FontWeight="Bold"  HorizontalAlignment="Center" Margin="0,90,0,584" Width="820"/>

        <TextBlock HorizontalAlignment="Left" Width="100" Margin="60,200,0,0" VerticalAlignment="Top" Height="20" FontSize="15">
            <Hyperlink NavigateUri="NavigateToPage1" Click="Hyperlink_Click">
                <TextBlock Text="СОТРУДНИКИ" Width="100"/>
     
            </Hyperlink>
               
        </TextBlock>
        <Frame x:Name="mainFrame" Margin="190,141,10,24" />


        <TextBlock HorizontalAlignment="Left" Width="63" Margin="60,230,0,0" VerticalAlignment="Top" Height="20" FontSize="15">
        <Hyperlink Click="NavigateToPage2">
            <TextBlock Text="Клиенты"/>
        </Hyperlink>
       </TextBlock>


        <TextBlock HorizontalAlignment="Left" Width="71" Margin="60,260,0,0" VerticalAlignment="Top" Height="20" FontSize="15">
        <Hyperlink Click="NavigateToPage3">
            <TextBlock Text="Договора"/>
        </Hyperlink>
       </TextBlock>

        <TextBlock HorizontalAlignment="Left" Width="112" Margin="60,290,0,0" VerticalAlignment="Top" Height="20" FontSize="15">
        <Hyperlink Click="NavigateToPage4">
            <TextBlock Text="Ценные бумаги"/>
        </Hyperlink>
       </TextBlock>

        <TextBlock HorizontalAlignment="Left" Width="56" Margin="60,320,0,0" VerticalAlignment="Top" Height="20" FontSize="15">
        <Hyperlink Click="NavigateToPage5">
            <TextBlock Text="Сделки"/>
        </Hyperlink>
       </TextBlock>

        <TextBlock HorizontalAlignment="Left" Width="63" Margin="60,0,0,0" VerticalAlignment="Center" Height="20" FontSize="15">
        <Hyperlink Click="NavigateToPage6">
            <TextBlock Text="Справка"/>
        </Hyperlink>
       </TextBlock>

        <Button Content="Выход" FontSize="22" Margin="10,657,0,0" HorizontalAlignment="Left" Click="ExitApplication" BorderBrush="{x:Null}" Foreground="White" VerticalAlignment="Top" Width="162" FontFamily="Verdana">
            <Button.Background>
                <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                    <GradientStop Color="#FF070910"/>
                    <GradientStop Color="#FF616AEA" Offset="1"/>
                </LinearGradientBrush>
            </Button.Background>
            <Button.Style>
                <Style TargetType="Button">
                    <Setter Property="Background" Value="#FF4285F4"/>
                    <Setter Property="Foreground" Value="White"/>
                    <Setter Property="BorderBrush" Value="#FF4285F4"/>
                    <Setter Property="BorderThickness" Value="1"/>
                    <Setter Property="Padding" Value="10,5"/>
                    <Style.Triggers>
                        <Trigger Property="IsMouseOver" Value="True">
                            <Setter Property="Background" Value="#FF3367D6"/>
                        </Trigger>
                    </Style.Triggers>
                </Style>
            </Button.Style>
        </Button>
    </Grid>
</Window>