ToursApp/MainWindow.xaml

<Window x:Class="Savelev_ToursApp.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"
        xmlns:local="clr-namespace:Savelev_ToursApp"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Grid Height="419" VerticalAlignment="Bottom" HorizontalAlignment="Left" Width="790">
        <Grid.ColumnDefinitions>
            <ColumnDefinition/>
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition Height="75*"/>
            <RowDefinition Height="218*"/>
            <RowDefinition Height="30*"/>
        </Grid.RowDefinitions>
        <Grid HorizontalAlignment="Left" Height="95" VerticalAlignment="Top" Width="790" Background="#bae3e8" Margin="0,2,0,0">
            <Grid.ColumnDefinitions>
                <ColumnDefinition/>
            </Grid.ColumnDefinitions>
            <Button Content="Back" Name="BtnBack" Margin="647,26,10,36" Width="Auto" Height="Auto" Click="BtnBack_Click" Background="#fac716"/>
        </Grid>
        <Image HorizontalAlignment="Left" Height="75" Margin="33,12,0,0" VerticalAlignment="Top" Width="82" Source="Resources/Без названия.png"/>
        <TextBlock HorizontalAlignment="Left" Margin="377,29,0,0" TextWrapping="Wrap" Text="Header" VerticalAlignment="Top" Height="40" Width="93" FontFamily="Times New Roman" FontSize="30"/>
        <Grid HorizontalAlignment="Left" Height="39" Grid.Row="2" VerticalAlignment="Top" Width="790" Background="#445c93"/>
        <Frame NavigationUIVisibility="Hidden" Name="MainFrame" HorizontalAlignment="Left" Height="283" Grid.Row="1" VerticalAlignment="Top" Width="790" Navigated="MainFrame_Navigated"/>
    </Grid>
</Window>