Hello, I notice a better solution today, similar topic via: Make it easy to configure syntax highlighting theme?
The logseq pull request is Feature: add codemirror options by andelf · Pull Request #3699 · logseq/logseq · GitHub
Adding those code to your config.edu
in setting.
:editor/extra-codemirror-options
{ :lineWrapping true }
They have many other options, and that’s make more sense than custom css (such as pointer shown).