CSS test questions

1

What does display:none do?

2

What does float do in an elements container?

3

In the box model, where is the margin?

4

When we use the padding setting, what sides of the element does our padding show?

5

What is incorrect in the following CSS for this navigation bar:

nav ul {list-style-type:none;}

nav ul li {float:left; width:100px; text-align:center}