It’s pretty arbitrary which unit we Web Designers and Developers end up using — while it may seem the pixel, px is founded in the reality of how displays work and therefore is effectively the quanta of scale on the web, this isn’t actually the case.

So, what’s actually wrong with the pixel? Well, it’s not intrinsically flawed, but that doesn’t mean there aren’t better alternatives. For one, it’s misleading to think of it as representing a single physical pixel — as we’ve seen, it’s actually an angular measurement, relative to the resolution of the viewport.

Furthermore, Responsive Design has…


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