Update app.py

app.py

@@ -19,6 +19,13 @@ css = """
     
 #component-2 {position: absolute; bottom: 0;    width: 100%;
 }
+
+.app.svelte-ac4rv4>.main.svelte-ac4rv4 {
+    display: flex;
+    flex-grow: 1;
+    flex-direction: column;
+    background-image: url(https://i.ibb.co/3rVCQz0/background-GPT-1.png);
+}
 div.svelte-awbtu4 {
     display: flex;
     flex-direction: inherit;