The online whiteboard of Kristofer Palmvik
Tools like Google Analytics allow you to send custom dimensions and metrics to track exactly this type of user-specific data. The rest of this article explains how to measure breakpoint usage in Google Analytics.
I believe the goals of good CSS architecture shouldn’t be that different from the goals of all good software development. I want my CSS to be predictable, reusable, maintainable, and scalable.
If you’re scratching your head right now in shock and disbelief that opacity would have any effect on which elements are stacked in front of which, welcome to the club. I was similarly shocked when I first stumbled upon this issue.