CSS: position: (relative|absolute);

I'm positioned relative

left: 20px; top: 20px;

I'm positioned absolute inside a relative one

right: 0px; bottom: 0;

I'm positioned absolute

right: 0; bottom: 0;

I'm positioned absolute

top: 0; right: 0;

I'm relative inside an absolute one

left: 40px; top: 40px;

I'm positioned absolute

left: 0; bottom: 0;

I'm absolute inside an absolute one

left: 40px; top: 90px;