Windows 10 replaces the classic balloon notifications with a new notification toasts. If you like balloon notifications and are not happy with toasts, you can restore balloon notifications back in Windows 10.
Like Windows 8, the Windows 10 operating system includes a secret hidden Aero Lite theme, which can be easily enabled. It changes the appearance of Window 10 in a special way.
If you are not happy with the appearance of window shadows in Windows 10, you can disable them. Follow the instructions in this tutorial.