Friday, September 11, 2009

What is an EM?

Although I've been using EM's in CSS and HTML to define font sizes for years I've only just discovered the definition of an EM. It's the with of a capital M in a particular font.

An EM-Dash is a dash that is the width (length) of an EM, which is usually longer than a standard dash.

1 comment:

  1. I'm not a huge fan of the EM actually. Nor do I like it when people use px for fonts.
    I guess if I had to choose one standard for everything, it would be pixels...but fonts have always been measured in points (pt) for me :P