this should functianally work

main.py

@@ -11,6 +11,7 @@ from dotenv import load_dotenv
 
 load_dotenv()
 config_file = "./config.json"
+BS = "https://cdn.jsdelivr.net/npm/bootstrap@5.3.6/dist/css/bootstrap.min.css"
 
 with open(config_file) as config_f:
     config=load(config_f)
@@ -21,7 +22,7 @@ def main() -> None:
     # load the data and create the data manager
     data = load_mtbf_data("data/blank.csv")
 
-    app = Dash(external_stylesheets=[dbc.themes.LUX])
+    app = Dash(external_stylesheets=[BS])
     app.title = "Reliability Dashboard"
     app.layout = create_layout(app, data)
     app.run()