Update style.css

style.css

@@ -70,3 +70,13 @@ body {
 #send-button:hover {
     background-color: #0056b3;
 }
+
+#model-selector-container {
+    margin-bottom: 10px;
+}
+
+#model-selector {
+    padding: 5px;
+    border-radius: 5px;
+    border: 1px solid #ccc;
+}