This folder contains presentation files for each of the 30 class sessions (e.g., 15 weeks with 2 classes per week). The 15-week syllabus was prepared for a slightly different class order than is contained in the slides. There is also a syllabus for a 10 week version of the class (1 session per week). That folder also includes supplemental information the instructor may need to transmit to students. Instructors who use the 10 week format will need to combine presentation slides from the 30 class format. Instructors are expected to know CSS well enough to use the slides without extensive presenter notes. Some notes are included to explain examples, problems, etc.