1 min readOct 2, 2020
Hey Rachel, that's actually a really great question!
While it's true that users can scale pixels with either zoom, or pinch/pull gesturing on many devices, pixel don't respond in terms of font-sizing well when a user attempts to modify the default font-size within their browser settings.
Whereas with Em and Rems, they will respond to a shift in the baseline browser font-size, and will recalculate everything else that is based on them as units.
For a good real-world example of this, you can check out this video here:
