Use space (space tab) to separate multiple classes. Do not use dots (.) or commas (,) to separate classes. Correct example: class-1 class-2 new-class-3Use space (space tab) to separate multiple classes. Do not use dots (.) or commas (,) to separate classes. Correct example: class-1 class-2 new-class-3Use space (space tab) to separate multiple classes. Do not use dots (.) or commas (,) to separate classes. Correct example: class-1 class-2 new-class-3Use space (space tab) to separate multiple classes. Do not use dots (.) or commas (,) to separate classes. Correct example: class-1 class-2 new-class-3Use space (space tab) to separate multiple classes. Do not use dots (.) or commas (,) to separate classes. Correct example: class-1 class-2 new-class-3Use space (space tab) to separate multiple classes. Do not use dots (.) or commas (,) to separate classes. Correct example: class-1 class-2 new-class-3Use space (space tab) to separate multiple classes. Do not use dots (.) or commas (,) to separate classes. Correct example: class-1 class-2 new-class-3Use space (space tab) to separate multiple classes. Do not use dots (.) or commas (,) to separate classes. Correct example: class-1 class-2 new-class-3Use space (space tab) to separate multiple classes. Do not use dots (.) or commas (,) to separate classes. Correct example: class-1 class-2 new-class-3