B1U12Ex:8
A: I have a question about CSS.
B: What do you want to know?
A: Why do we separate the style sheet and content?
B: Changing the style sheets means changing the appearance, but it doesn't effects on content.
A: What happens to the content?
B:  Nothing, because the two are separate.

Ex:9
EXAMPLE TEST QUESTIONS ON WEB DESIGN-spring professional development courses:

1. What do the letters CSS stand for?
   It's about cascading style sheets.

2. What is the importance of separating the style sheets and the content?
   It makes changing the web page easier. The appearance changes, but the content doesn't.

3. If the style sheet is changed, what happens to the content?
  Nothing, because the two are separate.