diff --git a/src/FancyMouse/Common/Helpers/DrawingHelper.cs b/src/FancyMouse/Common/Helpers/DrawingHelper.cs
index efdb573..18138b0 100644
--- a/src/FancyMouse/Common/Helpers/DrawingHelper.cs
+++ b/src/FancyMouse/Common/Helpers/DrawingHelper.cs
@@ -92,7 +92,7 @@ private static void DrawRaisedBorder(
         Graphics graphics, BoxStyle boxStyle, BoxBounds boxBounds)
     {
         var borderStyle = boxStyle.BorderStyle;
-        if ((borderStyle.Horizontal == 0) && (borderStyle.Vertical == 0))
+        if ((borderStyle.Horizontal == 0) || (borderStyle.Vertical == 0))
         {
             return;
         }
diff --git a/src/FancyMouse/Common/Models/Drawing/BoxBounds.cs b/src/FancyMouse/Common/Models/Drawing/BoxBounds.cs
index 9903375..82d141d 100644
--- a/src/FancyMouse/Common/Models/Drawing/BoxBounds.cs
+++ b/src/FancyMouse/Common/Models/Drawing/BoxBounds.cs
@@ -22,7 +22,7 @@ public sealed class BoxBounds
 
     */
 
-    public BoxBounds(
+    internal BoxBounds(
         RectangleInfo outerBounds,
         RectangleInfo marginBounds,
         RectangleInfo borderBounds,
diff --git a/src/FancyMouse/Common/Models/Layout/PreviewLayout.cs b/src/FancyMouse/Common/Models/Layout/PreviewLayout.cs
index c4353a6..1918640 100644
--- a/src/FancyMouse/Common/Models/Layout/PreviewLayout.cs
+++ b/src/FancyMouse/Common/Models/Layout/PreviewLayout.cs
@@ -10,7 +10,7 @@ public sealed class Builder
     {
         public Builder()
         {
-            this.Screens = new List<RectangleInfo>();
+            this.Screens = new();
             this.ScreenshotBounds = new();
         }
 
@@ -72,7 +72,7 @@ public PreviewLayout Build()
     public PreviewLayout(
         PreviewStyle previewStyle,
         RectangleInfo virtualScreen,
-        IList<RectangleInfo> screens,
+        List<RectangleInfo> screens,
         int activatedScreenIndex,
         RectangleInfo formBounds,
         BoxBounds previewBounds,