Answer 1

You can have as many buttons as you like. Can you please give an example what you mean by "reuse button tag"?

Answer 2

You mention the button tag every time you want to use it

Answer 3

You can use it repeatedly as many times as you'd like just like other elements!

Answer 4

Just use the tag more than once, hope this helps

Answer 5

You can use it multiple times in the code like this <button> </button>.