https://i.ytimg.com/vi/IBFb74Yv8wA/hqdefault.jpg

On day 3 Jen Kramer of O’Reilly Media, Inc. examines Bootstrap 4’s new features and functions. She looks at the Sass files. That’s right – Bootstrap 4 has dumped LESS in favor of Sass CSS preprocessor files. The files have been completely rewritten and refactored to take advantage of Sass data structures. It’s easy to make changes to a few variables and have a much different looking page.
Keep up with all web programming news here – https://goo.gl/uyqU5x

Subscribe to O’Reilly on YouTube: http://goo.gl/n3QSYi

Follow O’Reilly on
Twitter: http://twitter.com/oreilly
Facebook: http://facebook.com/OReilly
Google: http://plus.google.com/+oreillymedia

source