Why is the name of one of the fonts put in quotes

Answer 1

//Only the CSS-defined generic font family names like serif, cursive must be written without quotes but specific font family, like we use from Google fonts should be written between quotes, because they have spaces between them like css default font they are not connected by - like sans-serif

font-family: 'ZCOOL QingKe HuangYou', cursive;

Answer 2

it consists of two or more words

Answer 3

it consists of two or more words

Answer 4

The answer is:
It consist of two or more words