What happens if you forget a slash at the end of a header tag?

Question

I need to know!!

Answer 1

try it then

Answer 2

If you forget the slash, a web browser will continue the tag for the rest of the text in your document, producing undesirable results.

Ref:

https://home.chpc.utah.edu/~davidr/tut/tut1.html

//Has google team removed their search bar?