Is there no difference between No media and media=“all” in css link?

Question

Is there no difference between No media and media=\"all\"?

Answer 1

In HTML 4.01, the default value is screen.
In HTML5, the default value has been changed to all.

Therefore, it depends on the doctype declaration you use in your page. Never mind, user agents get confused about standards anyway; see Knu's comment. (I bet this is why they changed it to all in HTML5.)

Then again, this only really matters if you're supporting user agents that don't present pages on digital screens, or display any visual information for that matter.