1. How do you constrain a background to only appear behind an element's content?
background-clip: content-box
2. What is the third value in the box-shadow declaration below known as?
box-shadow: 3px 3px 2px #333333;
shadow blur
3. Which declaration will render an image completely grayscale?
filter: grayscale(100%)
4. What are multiple background image URLs separated by?
The url() entry for each background image file path is separated by a comma.
5. What other CSS property does column-rule work similarly to?
Column-rule takes on values the same way that the border property does.
6. What two properties are required to use @font-face?
src and font-family
7. What does the column-span property do?
let an element go across all columns
8. What property creates a multiple column setup?
column-count