fix chatbot pos 4

app.py

@@ -107,7 +107,7 @@ with gr.Blocks(
     }
     .chat-panel {
         position: fixed;
-        bottom: 20px;
+        top: 20px;
         right: 20px;
         left: auto;
         width: 350px;
@@ -118,6 +118,7 @@ with gr.Blocks(
         border-radius: 8px;
         padding: 10px;
         overflow: visible;
+        z-index: 1001;
     }
     #open-chat-btn {
         position: fixed;