Formatting changes have to be inline

app.py

@@ -3280,8 +3280,7 @@ if selected_tab == 'Manage Portfolio':
                             common_idx = mask.index.intersection(df.index)
                             for idx in common_idx:
                                 if mask.loc[idx, col]:
-                                    styles.loc[idx, col] = 'background-color: #DAA520'
-                                    styles.loc[idx, col] = 'color: black'
+                                    styles.loc[idx, col] = 'background-color: #DAA520; color: black'
                 return styles
             
             # Display the paginated dataframe first