Awesome
Learning Less CSS / Less.js
Just one of the things I'm learning. https://github.com/hchiam/learning
Less is conceptually similar to SASS/SCSS.
https://github.com/less/less.js
Preprocessed
npm install -g less # or yarn global add less
lessc input.less output.css
# lessc, not just less
Live, in-browser
<link rel="stylesheet/less" type="text/css" href="styles.less" />
<script src="https://cdn.jsdelivr.net/npm/less@4.1.1"></script>