Muy interesante lo que se explica en CSS Auditing Tools:
How large is your CSS? How repetitive is it? What about your CSS specificity score? Can you safely remove some declarations and vendor prefixes, and if so, how do you spot them quickly? Over the last few weeks, we’ve been working on refactoring and cleaning up our CSS, and as a result, we stumbled upon a couple of useful tools that helped us identify duplicates. So let’s review some of them.