Would it be possible to add the following styling for <ins> and <del>?
ins { text-decoration: underline; }
del { text-decoration: line-through; }
Example:
But soft, what light through thatyonder window breaks?
Red for deletions and green for insertions are very much conventional. Word processor features, such as Word’s Track Changes, universally use underlining and strikeout, as well. The default stylesheet of my Chrome browser does likewise. But I just see background-colored text on Discourse forums.
I suspect Discourse’s CSS reset may be clobbering it.