SASS is one of the popular CSS preprocessors nowadays.
10 Sass libraries to help speed up website development
Author: Jackson Scott
CSS Methodology
A methodology is a standard for writing CSS in such a way that it can be maintained and read by other team members or third-party developers. In other words, they are rules that will be understandable to someone from the outside so that they can understand the code without the author and make edits. Recommendations for writing this are called …
10 best libraries for CSS animation
All in all I have tried about thirty libraries. Some were quite small, some were quite large, but in the end I selected the ten best in my opinion. Note that none of these libraries do not require JavaScript.