Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

CSS CSS Basics (2014) Understanding Values and Units Em Units

Ross Horak
Ross Horak
20,890 Points

What, if any, is the difference between using 'em' or '%' when defining font-size?

As I understand it, both 'em' and '%' set the font size relative to their parent element. So what's the difference? Is using 1 over the other advantageous?

1 Answer

Hi Ross,

You may find this article useful with explaining the few differences.

Hope it helps.

-Rich