ko-KR q.css styles for vertical writing mode

For vertical writing mode, should be using 「…」 낫표 (natpyo, scythe symbol) and『…』 겹낫표 (gyeomnatpyo, double scythe symbol).

Reference: https://en.wikipedia.org/wiki/Quotation_mark#Summary_table

As far as I know (AFAIK) there is no way to select by writing mode (a CSS attribute), so not sure how to include this yet, without using classes.