We create an ID selector using the hash symbol and, unsurprisingly, an ID name, which is the value in an id attribute.

Great! The ID selector selects the HTML element with a topParagraph value for its id attribute.

Psst: an HTML element can only have one ID and a web page can only have one HTML element with the same ID.

While that's a kind of selector, it doesn't seem to start with a hash symbol, does it?