css class

Question

what's the different between # and . ?
I found the while in the course, if u want to change only one paragraph style, u write # on ur Css, and write . when u want to change more than one paragraph. Am I right?

Answer 1

# means ID in HTML Tag, while . means class

Answer 2

you can use ID for one one item to identify, Using class you can give same class to multyple elements.