Okay so does there have to be a space between r and /? Like is it <hr /> like how it shows me or could I have it <hr/> cause this also works on the code playground so I think its just a typo but Idk. It seems they both work so if it matters or not
No, it works either way and you can have no "/" too.
It doesn't matter; it will work with or without a space. <hr> also works.
It work with all the html code. It's just about convention.