Are there any practical reasons to use “em” instead of “pt” font size units?

Question

One CSS rule I have learned is that you should use the relative \"em\" font-size unit instead of the absolute \"pt\". The general idea is to set the font-size in your body t

Answer 1

From my experience as a web user who likes big text:

Specifying "pt" for font sizes is fine, as long as you don't specify element sizes in px/pt. Because when you do, and I increase the text size, half the text overflows ouside the element and way too often overflow is set to hidden.

This doesn't need to distort your layout -- just leave room for everything to grow downward. I can handle scrolling the page better than I can not seeing the text.