4 ms·

Isn't it up to the user to choose their preferred screen density? By this I mean something similar to the macOS' resolution scaling [1] [1] https://everymac.co

• chrisseaton 7y ago
  > Isn't it up to the user to choose their preferred screen density? The actual density of pixels is physically fixed in the hardware.
  • Silhouette 7y ago
    But a CSS px isn't a physical pixel. In practice, it often used to be, because a CSS px was conceived in terms of typical desktop displays before the higher DPI monitors and mobile devices we use today were around. However, 1px in CSS often corresponds to a 2x2 or even 3x3 set of pixels on modern screens with their much higher physical pixel densities.
    • chrisseaton 7y ago
      Why didn't they come up with a new unit if pixels don't mean anything any more?
      • Silhouette 7y ago
        Pixels in CSS do mean something, which is very clearly defined and which does related in a natural way to what a physical pixel would have been at the time. It's just that the definition adapts in a useful way to modern equipment as well, so dimensions specified in px for older screens still look roughly the same on newer ones.