Code block feature in the rich text editor is too unattractive

[Daeraxa]

You are free to edit the CSS, you should be able to target pre.hljs.

Introduction to customising Joplin (userchrome.css & userstyle.css)

Joplin has several internal stylesheets that control what Joplin looks like to the user. However two have been provided that allow the user to customise the app. Joplin uses its built-in styles but these two files can be used to override those styles. These files are just like the Cascading Style Sheets (CSS) used when creating web-sites. The files are called userchrome.css and userstyle.css. userchrome.css allows styling of the app itself, including the Markdown Editor, userstyle.css allows s…