How do you go about organizing CSS files, and why do you prefer this approach?

This is an example of an operational question that has technical aspects to it. The interviewer is interested in learning more about how you do your job concerning this specific topic. No two interviewers are the same, so the questions you will be asked may vary from interview to interview. The best way to prepare for this is to research the company, review your resume, and spend some time reviewing the operations you perform and the technologies with which you work.