3 a class name float computer science homework help

3-a class name “float”, float it to the left and make the width 150pix?

4-what will display in both of them, and what is the different between a and b?

a) footer{ color: redfont-size: .5em;}

b) #footer{ color:red;font-size: .5em;}

5- a brief description of css style, and what dose it do? Give some strengths of sing css and some weakness. The question are three brief sections.