Positioning

Boring old fixed positioning:

This is div one

This is div two

This is div three

Slightly more interesting relative (div 4), absolute (div 5) and fixed (div 6) positioning:

This is div four

This is div five

This is div six

Useful floating divs:

This is div seven

This is div eight

This is div nine

'3 dimensional' z-index divs:

This is div ten

This is div eleven

This is div twelve