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

width:auto on a DIV expands it to fill it's parent, not to be sized by it's children.

ex: http://jsfiddle.net/nTWvr/

To size a DIV by it's content, there are a few methods: How to make div not larger than its contents?