This package analyzes your CSS on a high level and comes up with a score, divided in three areas:

• Maintainability: how difficult is it for someone looking at the CSS from a high level to find the exact spot to fix a bug?
• Complexity: how difficult is it for someone to make a change and them being confident that they can make that change without side-effects?
• Performance: How likely is the CSS to have a negative impact on performance, based on high-level metrics? (Not including using hardware accelerated transforms and the like, because other tools are more suite for that.)