September 14, 2019
Jeremy Church put together a nice little side by side comparison of REM and Em (and PX).1
Both REM and EM are relative units. The difference is in what they’re relative to.
Whileemis relative to the font size of its direct or nearest parent,remis only relative to the
font-size. I like to think of it as a reset. If a style sheet is built in a modular fashion, thenremshouldn’t be needed very often, but it can be handy at times.
Thanks for reading! My name's Stephen Weiss. I live in Chicago with my wife, Kate, and dog, Finn.
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