Prevent wrapping in nested floated items in CSS

Answer 1

Have you tried applying the white-space: nowrap; property to the labels?

http://www.w3schools.com/CSS/pr_text_white-space.asp

Answer 2

Try explicitly setting the width of each nested div.

Answer 3

I dont know if I understand correctly, but have you try the old trick:

<div style="clear:both;"></div>