Can anyone explain to me the use of <span> in headings ?

Question

Hi ! I don't understand the use of <span> in headings. I don't see any visual change. Can you explained it to me please ?

Answer 1

https://code.sololearn.com/WEoS44rvq844/?ref=app

Answer 2

You are welcome😉

Answer 3

Thanks a lot !! it's really helpful !!