Increase space between paragraphs

@efemkay
Trying to change the editing view, not interested in the reading view, but if it comes as a bonus I don’t mind.

This is what it looks like now:


Where the top arrow points, there is a double-enter used.
On the bottom, there is a single-enter used. But want it to look as if i used double-enter.

@rigmarole
Tried adding !important as you suggested but nothing.
My guess is that selectors are wrong and won’t target the needed part of the code (or classes, not sure how they are called,.CodeMirror pre.CodeMirror-line << talking about this part).
Tried searching these selectors using a developer tool but there are so many of them, gets confusing very fast.