Pixels vs. Points in HTML/CSS

Question

When creating an HTML page, should I specify things like margins with pixels or with points in CSS?

Is one of them considered to be better practice than

Answer 1

I think it depends on what you're trying to do.

I find the key question is does the distance need to resize with the window? Some units are relative, some (like pixels and points) are not - a brief description is here.

I haven't seen points used much, px seems more common when an absolute measurement is needed.