Various updates.

Harmonia.WinUI/Resources/Styles.xaml

@@ -2,7 +2,24 @@
 <ResourceDictionary
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
-    
+
+    <!-- Global Font -->
+    <Style TargetType="TextBlock">
+        <Setter Property="FontFamily" Value="Lexend" />
+    </Style>
+
+    <Style TargetType="TextBox" BasedOn="{StaticResource DefaultTextBoxStyle}">
+        <Setter Property="FontFamily" Value="Lexend" />
+    </Style>
+
+    <Style TargetType="MenuFlyoutItem" BasedOn="{StaticResource DefaultMenuFlyoutItemStyle}">
+        <Setter Property="FontFamily" Value="Lexend" />
+    </Style>
+
+    <Style TargetType="ListViewItem" BasedOn="{StaticResource DefaultListViewItemStyle}">
+        <Setter Property="FontFamily" Value="Lexend" />
+    </Style>
+
     <!-- Flat Button -->
     <Style x:Key="FlatButton" TargetType="Button">
         <Setter Property="Padding" Value="10"/>