A rewrite for Bootstrap 4 utilities with RSCSS helpers conventions.
.mt-0 becomes ._mt-0
$ npm run compile-css
After that, you can copy and use css/bootstrap-utilities.css
It differs from bootstraps utilities in spacing only. Instead of the sizes being from 0 to 5 it becomes from 0 to 9. The sizes are multiples of 8 for both margins and paddings.