Please what's the difference between elements and tags?

Question

Which of this is element and which is tag?
<style> <p>

Answer 1

Prince Etiet <p> is a tag ("opening tag")
</p> is a ("closing tag")
and <p></p> (both opening and closing tag is called an element) is an element of HTml

Answer 2

Prince Etiet css don't have tags it has
1. selecter
h1 p #myId .myClasd etc
2.property
color , font-size , display, etc.
3.value
blue , 24px , block etc
summery:
css have selecter property and value

Answer 3

wat about for css?

Answer 4

So, CSS got no element. Huh?