I would like to set Ubuntu 17.04 login screen and lock screen style in Ubuntu 17.10. The swipe up screen is not a problem :)
Is there any way to do it?
The login screen you desire is the default theme for lightdm. If you install the
lightdm package, you can select it as your login manager. To switch between the two after being installed, you can run
sudo dpkg-reconfigure lightdm (or gdm) and select the one you wish to use.
The lock screen is more integral to the shell portion of the system, and to get lightdm as the lock screen, you will need to re-install the Unity session, and use it instead of GNOME. I do not know of a way to get GNOME shell to use lightdm as the lock screen.