(not the person you're replying to) This is so true, and thanks for introducing me to Adam Wathan's Youtube channel, I had no idea this existed. I work closely with designers who use tools like Sketch, Framer, Figma, etc and I'm always finding little edge cases where their "pixel perfect" designs have mismatched paddings, margins, often half-pixel letter spacing that they've decided is more aesthetic in their design tool. It can be hard to push back sometimes.
I think this gets to the core of the problem -- we need a design tool that can directly export fully styled React components (or whatever).
Basically, we're asking workaday designers to design using a tool that doesn't respect the implementation constraints, and doesn't allow them to preview at arbitrary window sizes.
