In the example below, the first float pushes content into region #2, and the second float pushes both floats into region #3.

This line of text should not get out of the region. This line of text should not get out of the region. This line of text should not get out of the region. This line of text should not get out of the region.

This line of text should not get out of the region. This line of text should not get out of the region. This line of text should not get out of the region. This line of text should not get out of the region.

This line of text should not get out of the region.