Update app.py

use external css style sheet

app.py

@@ -37,6 +37,7 @@ drivers_2022 = {'Fastest driver': 'Fastest driver', 'VER': 'Max Verstappen',
                 'LAT': 'Nicolas Latifi'}
 
 app_ui = ui.page_fluid(
+    ui.include_css("my_styles.css"),
     shinyswatch.theme.minty(),
     ui.panel_title("Gear usage in fastest lap"),
     ui.layout_sidebar(
@@ -122,10 +123,7 @@ def server(input, output, session):
     @reactive.Calc
     def get_data_1():
         try:
-            ui.div(
-                {"style": "position: fixed; left: calc(50%);"},
-                ui.notification_show("Data takes a couple seconds to load.", duration=3, type = 'default'),
-            )
+            ui.notification_show("Data takes a couple seconds to load.", duration=3, type = 'default')
             
             f1_session = ff1.get_session(int(input.year()), input.track_select(), input.session_type())
             f1_session.load()