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CSS

Posted by Anna Matviyenko
Anna Matviyenko
4,250 Points

Having a hard time understanding em units and I can't pass the challenge.Why can't we just use % if we need to scale?

Hello everyone,

Sorry if my question is silly. I am new to this course and so far everything made sense to me, but I'm stuck here with em/rem units. Can someone explain on a simple example the relation between em, px and %? I've watched the video a few times and still can't quite get it.

Thank you.

1 Answer

Ted Sumner
PLUS
Ted Sumner
Courses Plus Student 17,967 Points
Ted Sumner
Ted Sumner
Courses Plus Student 17,967 Points

For some reason they did not add % to formatting text. The difference between rem and em is the reference point. em references the parent element size. rem references the root font size.

Em is used because of control issues, but I can see where rem could also be very good. And that difference may be the reason that they do not use %. There would be no control over reference point.