What's different between # and .

Answer 1

. is for a classname and # is for the ID...but the # is also could be use as an indicator/reminder that this css code(ID) was a unique one and its dedicated only to be used for the specific html code.

@from my html professor

Answer 2

. selects class, # selects ID

Answer 3

# is for id and . is for classname

Answer 4

# selects property and . selects the value