- block level
- inline
- sizing elements
- width
- height
- padding
- margin
- border
- How it behaves:
- Why things wraps
- box-sizing: border-box;
- How to position things
- float
- display : inline-block;
-
floats
- clearfix
-
inline-block
- Mobile first
- media queries
- make the page respond to the size of the page