fix compose page spacing

Wino.Mail/Views/ComposePage.xaml

@@ -108,7 +108,7 @@
     </Page.Resources>
 
     <Grid
-        Padding="7,0,7,7"
+        Padding="7,0"
         AllowDrop="True"
         DragLeave="OnComposeGridDragLeave"
         DragOver="OnComposeGridDragOver"
@@ -119,7 +119,6 @@
         </Grid.RowDefinitions>
 
         <Border
-            Grid.Row="0"
             Background="{ThemeResource WinoContentZoneBackgroud}"
             BorderBrush="{StaticResource CardStrokeColorDefaultBrush}"
             BorderThickness="1"