This is column 1.
Floated left.
Floated left.
Floated left.
Floated left.
This is column 2.
Floated right.
This example demonstrates expanding a container/parent div box (yellow) as floating (column?) content is added to it.
An "invisible" div (with Clear=both, Height=1px) is placed after the columns and before the container end tag.
The CCS styles for this page are located in the <head> tag of this page, so just view the page source code to see what's going on.