[kaushalmodi]

To me at least, mark, details/summary and description lists are not obscure!

While I don't code in HTML directly, I write the mark-up in Org mode that exports to those.

- My recent blog post where I used mark few times (I have set the mark highlight to be brownish to match my site theme) and also the description lists: https://scripter.co/hugo-modules-getting-started/

- In some other posts, I use details/summary to collapse large code blocks.