Fun with <div> and alignments

Centered div :

This div is centered in its container

Div with centered text

This content should be centered in the div
But will not center container within the div, see trick #1
This div is centered in its container

2 divs side by side

This div is float:left;
This div is float:left; too

2 divs side by side

This div is float:left;
This div is float:right;

2 columns centered relative size

left column
right column

2 columns centered fixed size

right column
right column
right column
right column
left column
more boxes on left column
more boxes on left column