What is CSS??

Css is Central superior service of pakistan and Top exam.

In which 10 department are lies

1-Pakistan Customs

2- Commerce and Trade group CTP

3- Foreign Service of Pakistan

4- Inland Revenue Service of Paksitan

5- Information services of Pakistan

6- Military Land and Cantonment

7- Office Management and Secretariat Group

8- Pakistan Administration Services

9- Audits and Account service

10- Police Service of Pakistan

11- Postal Group

12- Railways Group

There above 12 groups of CSS.