diff --git a/main.py b/main.py
index e9bc3f7..0e24c55 100644
--- a/main.py
+++ b/main.py
@@ -114,8 +114,7 @@ def page_login() -> None:
     ui.add_head_html('''
                         <link rel="manifest" href="/manifest.json">
                         ''')
-    ui.add_body_html(''' <button id="btnAdd" style="display: none;">Install our app!</button>
-
+    ui.add_body_html(''' 
     <script>
       let deferredPrompt;
 
@@ -128,25 +127,12 @@ def page_login() -> None:
         btnAdd.style.display = 'block';
       });
 
-      btnAdd.addEventListener('click', (e) => {
-        // hide our user interface that shows our A2HS button
-        btnAdd.style.display = 'none';
-        // Show the prompt
-        deferredPrompt.prompt();
-        // Wait for the user to respond to the prompt
-        deferredPrompt.userChoice.then((choiceResult) => {
-            if (choiceResult.outcome === 'accepted') {
-              console.log('User accepted the A2HS prompt');
-            } else {
-              console.log('User dismissed the A2HS prompt');
-            }
-            deferredPrompt = null;
-          });
-      });
     </script>''')
     async def alert():
       await ui.run_javascript('''
         // Show the prompt
+        if(!deferredPrompt)
+                              alert("Browser non compatibile");
         deferredPrompt.prompt();
         // Wait for the user to respond to the prompt
         deferredPrompt.userChoice.then((choiceResult) => {
@@ -156,12 +142,13 @@ def page_login() -> None:
                 console.log('User dismissed the A2HS prompt');
             }
             deferredPrompt = null;
+            
             });''', respond=False)
 
     with ui.card().classes('absolute-center items-center'):
-        ui.button('Install App', on_click=alert)
+        ui.button('Installa App', on_click=alert)
         ui.image('assets/logo.svg')
-        ui.label('Let\'s Swing Admin').classes('text-2xl')
+        ui.label('Let\'s Swing Admin').classes('text-2xl').style("text-align:center")
         username = ui.input('Username').on('keydown.enter', try_login).classes('w-full')
         password = ui.input('Password', password=True, password_toggle_button=True).on('keydown.enter', try_login)
         ui.button('Log in', on_click=try_login)