[SOLVED] which file to edit the plan selection page when registering?

I want to edit the look of the page when a user is registering and selecting a Plan. What file would that be? Namely this page where I'd like ot add horizontal lines between each Plan. Thanks

Most changes in "looks" are done with CSS.

E.g. use this CSS for lines in between the plans:
(Change values to your liking, of course.)

cool, thanks. I was actually going to be more creative and use some yootheme UIkit boxes though so if anyone knows in the code where I can do that I'd appreciate it.

If you 're using the "Default" template in CBSubs and don't want to bother creating your own custom template, you could create an override of the default view in components/com_comprofiler/plugin/user/plug_cbpaidsubscriptions/templates/default/productusersubscription in your Avenue template's html folder.