How to make my joplin notes more printable?

https://discourse.joplinapp.org/t/how-to-make-joplin-codes-printable/27820 I'm having a discussion on joplin about it atm. Just to tell. I'm wondering how do I make it printable? I tried changing the userstyle.css (I forget where userstyle.css was now lol), but nothing happened really while exporting to pdf. So, can you suggest me ways to fix this issue?