When comparing mini.css vs Cirrus, the Slant community recommends mini.css for most people. In the question“What are the best minimal CSS frameworks?” mini.css is ranked 1st while Cirrus is ranked 9th. The most important reason people chose mini.css is:
This framework is under 7KB and really does the same that Bootstrap does as good, or better.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Lightweight
This framework is under 7KB and really does the same that Bootstrap does as good, or better.
Pro Modern
Pro Supports Flexbox and CSS Grid
Supports both Flexbox and CSS grid making it a great modern choice for designing web apps.
Pro CSS Only
No additional JS/jQuery required to use.
Pro Mobile Responsive
Extremely responsive and supports many smaller screens.
Pro Open Source
Open source and quite actively maintained on Github.
Pro Lightweight
Much smaller than Bootstrap with just as much flexibility.
Cons
Con Archived
Git repo has been archived so it's pretty unlikely to receive bug fixes or new features