style

app.py

@@ -91,6 +91,27 @@ def init_leaderboard(dataframe):
 
 demo = gr.Blocks(css=custom_css)
 with demo:
+    gr.HTML(
+        """
+        <style>
+            body {
+                background-color: #121212;
+                color: white;
+                margin: 0;  /* Reset browser default */
+            }
+
+            /* Outer container margin & spacing */
+            .gradio-container {
+                max-width: 1100px;
+                margin: 2rem auto;        /* top/bottom spacing + horizontal centering */
+                padding: 2rem;            /* inner spacing */
+                background-color: rgba(0, 0, 0, 0.6);  /* optional: semi-transparent panel */
+                border-radius: 12px;      /* rounded corners */
+            }
+        </style>
+        """
+    )
+
     gr.HTML(TITLE)
     gr.Markdown(INTRODUCTION_TEXT, elem_classes="markdown-text")