Update app.py

app.py

@@ -26,10 +26,41 @@ def arithmetic(num1, num2, operation):
 
     return res[0]
 
+custom_css = """
+    /* Set dark background for the entire app */
+    .gradio-container {
+        background-color: #121212;
+        color: #ffffff;
+    }
+    
+    /* Apply gradient blue background to buttons */
+    button {
+        background: linear-gradient(to right, #1e3c72, #2a5298);
+        color: #ffffff;
+        border: none;
+    }
+    
+    /* Apply gradient blue border to textboxes */
+    input[type="text"], textarea {
+        border: 2px solid;
+        border-image: linear-gradient(to right, #1e3c72, #2a5298);
+        border-image-slice: 1;
+        background-color: #1e1e1e;
+        color: #ffffff;
+    }
+    
+    /* Style the labels */
+    label {
+        color: #ffffff;
+    }
+
+    /* Hide footer display */
+    footer {display: none !important;}
+"""
 with gr.Blocks(
     title="R-Powered Calculator",
-    theme="gstaff/sketch",
-    css = "footer {display: none !important;}"
+    theme=gr.themes.Base(),
+    css = custom_css
 ) as app:
   gr.HTML(
     """