What's the difference between and , and ?

Answer 1

and consume more bandwidth than and .

They also require more typing (if not auto-generated).

They also clutter the editor screen with more text. I seem to recall that programmers like smaller source files if they are the same. (And let's be real, they are the same. Yes, there are "technical" (cough, ahem, excuse me) differences, but that's mostly phony to begin with.)

With any of the above tags, you can use style sheets to customize how they appear to however you want if you need them to appear different than their defaults renderings.