As a designer who often hands over designs to developers, I find it all too frequent scenarios where developers struggle interpreting design into code. I have NEVER seen a developer who can implement a design exactly per spec in CSS.

This is not to say that developers are incompetent with CSS, in fact, it probably says more about CSS than it does about the developer. The fact that CSS has gotten so convoluted is counter to its original goal.

Perhaps I have just work with companies who don't have an A-class developer team? I don't know. But it's not unusual for developers to straight up tell me "I'm not a CSS guy". Like... really? Who is then?