NavigationViewItem.xaml

<Page.Resources>
        <Style TargetType="mux:NavigationViewItem">
            <Setter Property="Foreground" Value="{ThemeResource NavigationViewItemForeground}"/>
            <Setter Property="Background" Value="{ThemeResource NavigationViewItemBackground}"/>
            <Setter Property="BorderBrush" Value="{ThemeResource NavigationViewItemBorderBrush}"/>
            <Setter Property="BorderThickness" Value="{StaticResource NavigationViewItemBorderThickness}"/>
            <Setter Property="UseSystemFocusVisuals" Value="True"/>
            <Setter Property="HorizontalContentAlignment" Value="Stretch"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="mux:NavigationViewItem">
                        <Grid x:Name="LayoutRoot" Background="{TemplateBinding Background}" VerticalAlignment="Center" Height="50" Margin="0,0,0,0" Control.IsTemplateFocusTarget="True">
                            <VisualStateManager.VisualStateGroups>
                                <VisualStateGroup x:Name="PointerStates">
                                    <VisualState x:Name="Normal"/>
                                    <VisualState x:Name="PointerOver">
                                        <VisualState.Setters>
                                            <Setter Target="LayoutRoot.Background" Value="{ThemeResource NavigationViewItemBackgroundPointerOver}"/>
                                            <Setter Target="RevealBorder.BorderBrush" Value="{ThemeResource NavigationViewItemBorderBrushPointerOver}"/>
                                            <Setter Target="ContentPresenter.Foreground" Value="{ThemeResource NavigationViewItemForegroundPointerOver}"/>
                                        </VisualState.Setters>
                                    </VisualState>
                                    <VisualState x:Name="Pressed">
                                        <VisualState.Setters>
                                            <Setter Target="LayoutRoot.Background" Value="{ThemeResource NavigationViewItemBackgroundPressed}"/>
                                            <Setter Target="RevealBorder.BorderBrush" Value="{ThemeResource NavigationViewItemBorderBrushPressed}"/>
                                            <Setter Target="ContentPresenter.Foreground" Value="{ThemeResource NavigationViewItemForegroundPressed}"/>
                                        </VisualState.Setters>
                                    </VisualState>
                                    <VisualState x:Name="Selected">
                                        <VisualState.Setters>
                                            <Setter Target="LayoutRoot.Background" Value="{ThemeResource NavigationViewItemBackgroundSelected}"/>
                                            <Setter Target="RevealBorder.BorderBrush" Value="{ThemeResource NavigationViewItemBorderBrushSelected}"/>
                                            <Setter Target="ContentPresenter.Foreground" Value="{ThemeResource NavigationViewItemForegroundSelected}"/>
                                        </VisualState.Setters>
                                    </VisualState>
                                    <VisualState x:Name="PointerOverSelected">
                                        <VisualState.Setters>
                                            <Setter Target="LayoutRoot.Background" Value="{ThemeResource NavigationViewItemBackgroundSelectedPointerOver}"/>
                                            <Setter Target="RevealBorder.BorderBrush" Value="{ThemeResource NavigationViewItemBorderBrushSelectedPointerOver}"/>
                                            <Setter Target="ContentPresenter.Foreground" Value="{ThemeResource NavigationViewItemForegroundSelectedPointerOver}"/>
                                        </VisualState.Setters>
                                    </VisualState>
                                    <VisualState x:Name="PressedSelected">
                                        <VisualState.Setters>
                                            <Setter Target="LayoutRoot.Background" Value="{ThemeResource NavigationViewItemBackgroundSelectedPressed}"/>
                                            <Setter Target="RevealBorder.BorderBrush" Value="{ThemeResource NavigationViewItemBorderBrushSelectedPressed}"/>
                                            <Setter Target="ContentPresenter.Foreground" Value="{ThemeResource NavigationViewItemForegroundSelectedPressed}"/>
                                        </VisualState.Setters>
                                    </VisualState>
                                </VisualStateGroup>
                                <VisualStateGroup x:Name="DisabledStates">
                                    <VisualState x:Name="Enabled"/>
                                    <VisualState x:Name="Disabled">
                                        <VisualState.Setters>
                                            <Setter Target="LayoutRoot.Opacity" Value="{ThemeResource ListViewItemDisabledThemeOpacity}"/>
                                        </VisualState.Setters>
                                    </VisualState>
                                </VisualStateGroup>
                                <VisualStateGroup x:Name="IconStates">
                                    <VisualState x:Name="IconVisible"/>
                                    <VisualState x:Name="IconCollapsed">
                                        <VisualState.Setters>
                                            <Setter Target="IconBox.Visibility" Value="Collapsed"/>
                                        </VisualState.Setters>
                                    </VisualState>
                                </VisualStateGroup>
                            </VisualStateManager.VisualStateGroups>
                            <Grid HorizontalAlignment="Left" VerticalAlignment="Center">
                                <Rectangle x:Name="SelectionIndicator" Fill="{ThemeResource NavigationViewSelectionIndicatorForeground}" Height="24" Opacity="0.0" Width="6"/>
                            </Grid>
                            <Border x:Name="RevealBorder" BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{TemplateBinding BorderBrush}"/>
                            <Grid x:Name="ContentGrid" HorizontalAlignment="Left" Height="50">
                                <Grid.ColumnDefinitions>
                                    <ColumnDefinition x:Name="IconColumn" Width="44"/>
                                    <ColumnDefinition Width="*"/>
                                </Grid.ColumnDefinitions>
                                <ToolTipService.ToolTip>
                                    <ToolTip x:Name="ToolTip"/>
                                </ToolTipService.ToolTip>
                                <Viewbox x:Name="IconBox" Child="{TemplateBinding Icon}" Margin="10,15,16,12"/>
                                <ContentPresenter x:Name="ContentPresenter" ContentTemplate="{TemplateBinding ContentTemplate}"  FontSize="15" Content="{TemplateBinding Content}" ContentTransitions="{TemplateBinding ContentTransitions}" Grid.Column="1" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
                            </Grid>
                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
        </Page.Resources>