Can multiple different HTML elements have the same ID if they're different elements?

Question

Can multiple HTML elements have the same ID if they\'re of different element types? Is a scenario like this valid? Eg:

div#foo
span#foo
a#foo

Answer 1

Yes they can.

I don't know if all these anwers are outdated, but just open youtube and inspect the html. Try to inspect the suggested videos, you'll see that they all have the same Id and repeating structure as follows: