CSS: I can't set width to “auto” always appear 100%

Question

for some reason

the width of the div is 100% and if i set it to auto, nothing changes. tried display: block; and still nothing.

what I have in

Answer 1

use display: inline-block

and add a class

.clear { clear:both;}

place it in between the boxes

so

http://jsfiddle.net/HpMSU/1/