diff --git a/src/ClaudeDo.Ui/Views/Modals/DiffModalView.axaml b/src/ClaudeDo.Ui/Views/Modals/DiffModalView.axaml
index d7945b7..115268d 100644
--- a/src/ClaudeDo.Ui/Views/Modals/DiffModalView.axaml
+++ b/src/ClaudeDo.Ui/Views/Modals/DiffModalView.axaml
@@ -49,9 +49,8 @@
   <ctl:ModalShell Title="DIFF" CloseCommand="{Binding CloseCommand}">
     <ctl:ModalShell.Footer>
       <StackPanel Orientation="Horizontal" Spacing="8"
-                  HorizontalAlignment="Right" VerticalAlignment="Center"
-                  Margin="16,0">
-        <Button Content="Merge…" Command="{Binding MergeCommand}"/>
+                  HorizontalAlignment="Right" VerticalAlignment="Center">
+        <Button Classes="btn" Content="Merge…" Command="{Binding MergeCommand}"/>
       </StackPanel>
     </ctl:ModalShell.Footer>