新增一個頁面，寬度設為346

SettingPage.xaml

<common:LayoutAwarePage
    x:Name="pageRoot"
    x:Class="App2.SettingPage"
    DataContext="{Binding DefaultViewModel, RelativeSource={RelativeSource Self}}"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:App2"
    xmlns:common="using:App2.Common"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d"
    Width="346">



    <UserControl.Resources>
        <Style x:Key="SettingsBackButtonStyle" TargetType="Button">
            <Setter Property="MinWidth" Value="0"/>
            <Setter Property="FontFamily" Value="Segoe UI Symbol"/>
            <Setter Property="FontWeight" Value="Normal"/>
            <Setter Property="FontSize" Value="26.66667"/>
            <Setter Property="AutomationProperties.AutomationId" Value="BackButton"/>
            <Setter Property="AutomationProperties.Name" Value="Back"/>
            <Setter Property="AutomationProperties.ItemType" Value="Navigation Button"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="Button">
                        <Grid x:Name="RootGrid" Width="30" Height="30">
                            <Grid Margin="-6,-6,0,0">
                                <TextBlock x:Name="BackgroundGlyph" Text="&#xE0D4;" Foreground="Transparent"/>
                                <TextBlock x:Name="NormalGlyph" Text="{StaticResource BackButtonSnappedGlyph}" Foreground="White"/>
                                <TextBlock x:Name="ArrowGlyph" Text="&#xE0C4;" Foreground="#00b2f0" Opacity="0"/>
                            </Grid>
                            <Rectangle
                                x:Name="FocusVisualWhite"
                                IsHitTestVisible="False"
                                Stroke="{StaticResource FocusVisualWhiteStrokeThemeBrush}" 
                                StrokeEndLineCap="Square"
                                StrokeDashArray="1,1"
                                Opacity="0"
                                StrokeDashOffset="1.5"
                                />

                            <Rectangle
                                x:Name="FocusVisualBlack"
                                IsHitTestVisible="False"
                                Stroke="{StaticResource FocusVisualBlackStrokeThemeBrush}" 
                                StrokeEndLineCap="Square"
                                StrokeDashArray="1,1"
                                Opacity="0"
                                StrokeDashOffset="0.5"
                                />

                            <VisualStateManager.VisualStateGroups>
                                <VisualStateGroup x:Name="CommonStates">
                                    <VisualState x:Name="Normal" />
                                    <VisualState x:Name="PointerOver">
                                        <Storyboard>
                                            <ObjectAnimationUsingKeyFrames Storyboard.TargetName="BackgroundGlyph" Storyboard.TargetProperty="Foreground">
                                                <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource BackButtonPointerOverBackgroundThemeBrush}"/>
                                            </ObjectAnimationUsingKeyFrames>
                                        </Storyboard>
                                    </VisualState>
                                    <VisualState x:Name="Pressed">
                                        <Storyboard>
                                            <ObjectAnimationUsingKeyFrames Storyboard.TargetName="BackgroundGlyph" Storyboard.TargetProperty="Foreground">
                                                <DiscreteObjectKeyFrame KeyTime="0" Value="White"/>
                                            </ObjectAnimationUsingKeyFrames>
                                            <DoubleAnimation
                                            Storyboard.TargetName="ArrowGlyph"
                                            Storyboard.TargetProperty="Opacity"
                                            To="1"
                                            Duration="0"/>
                                            <DoubleAnimation
                                            Storyboard.TargetName="NormalGlyph"
                                            Storyboard.TargetProperty="Opacity"
                                            To="0"
                                            Duration="0"/>
                                        </Storyboard>
                                    </VisualState>
                                    <VisualState x:Name="Disabled">
                                        <Storyboard>
                                            <ObjectAnimationUsingKeyFrames Storyboard.TargetName="RootGrid" Storyboard.TargetProperty="Visibility">
                                                <DiscreteObjectKeyFrame KeyTime="0" Value="Collapsed"/>
                                            </ObjectAnimationUsingKeyFrames>
                                        </Storyboard>
                                    </VisualState>
                                </VisualStateGroup>
                                <VisualStateGroup x:Name="FocusStates">
                                    <VisualState x:Name="Focused">
                                        <Storyboard>
                                            <DoubleAnimation
                                            Storyboard.TargetName="FocusVisualWhite"
                                            Storyboard.TargetProperty="Opacity"
                                            To="1"
                                            Duration="0"/>
                                            <DoubleAnimation
                                            Storyboard.TargetName="FocusVisualBlack"
                                            Storyboard.TargetProperty="Opacity"
                                            To="1"
                                            Duration="0"/>
                                        </Storyboard>
                                    </VisualState>
                                    <VisualState x:Name="Unfocused" />
                                    <VisualState x:Name="PointerFocused" />
                                </VisualStateGroup>
                            </VisualStateManager.VisualStateGroups>
                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </UserControl.Resources>

    <!--
        This grid acts as a root panel for the page that defines two rows:
        * Row 0 contains the back button and page title
        * Row 1 contains the rest of the page layout
    -->
    <Border BorderThickness="1, 0, 0, 0" BorderBrush="#FF006B96" Background="#FFFFFFFF">
        <Grid VerticalAlignment="Stretch">
            <Grid.RowDefinitions>
                <RowDefinition Height="80" />
                <RowDefinition Height="*" />
            </Grid.RowDefinitions>
            
            <Grid Grid.Row="0" Background="#0072bc" >
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="*" />
                </Grid.ColumnDefinitions>
                <StackPanel Orientation="Horizontal" Grid.Column="0" Margin="40, 32, 17, 13" >
                    <Button Click="MySettingsBackClicked" Margin="0, 3, 0, 0" Style="{StaticResource SettingsBackButtonStyle}"/>
                    <TextBlock Foreground="White" Margin="10, 0, 0, 0" FontFamily="微軟正黑體" FontWeight="SemiLight" FontSize="24.6667" Text="詳細設定" />
                </StackPanel>
            </Grid>
            <Grid Margin="40, 33, 40, 39" VerticalAlignment="Top" Grid.Row="1">
                <StackPanel x:Name="FlyoutContent">
                    <TextBlock Margin="0, 0, 0, 10" Style="{StaticResource BasicTextStyle}" HorizontalAlignment="Left" Text="設定一"/>
                    <TextBlock Margin="0, 0, 0, 10" Style="{StaticResource BasicTextStyle}" HorizontalAlignment="Left" Text="設定二"/>
                    <ToggleSwitch Header="設定三" HorizontalAlignment="Left" Margin="0, 0, 0, 10" Grid.Row="1" />
                </StackPanel>
            </Grid>            
        </Grid>
    </Border>
</common:LayoutAwarePage>