diff --git a/project/ui/calculation.slint b/project/ui/calculation.slint
index 1b1fb38..b960a6f 100644
--- a/project/ui/calculation.slint
+++ b/project/ui/calculation.slint
@@ -1,4 +1,4 @@
-import { VerticalBox, Button } from "std-widgets.slint";
+import { VerticalBox, Button, Palette } from "std-widgets.slint";
 
 export component Calculation inherits PopupWindow {
     width: 400px;
@@ -10,7 +10,9 @@ export component Calculation inherits PopupWindow {
     Rectangle {
         height: 100%;
         width: 100%;
-        background: lightgray;
+        background: Palette.background;
+        drop-shadow-color: Palette.border;
+        drop-shadow-blur: 50px;
     }
 
     VerticalBox {