- Make a div for each element: gray background, blue box, red boxes (3), squares (3)
- Make an extra div to help align square boxes: container
- Remember to set z-index on square boxes
- Set classes and IDs: remember, classes for elements that are repeated, IDs for elements that are unique
- Learn how position: static, fixed, aboslute, relative block elements.
- Learn how to apply clearfix:after style.
- Learn how to float elements, float: left and apply clearfix:after.