responsive smalltouch - no changes

Hi,
I am working on a website with a subtheme of adaptivethemes.

So on my deptop verison I use this:
#page {
background: #69ABDE none repeat scroll 0% 0%;
padding: 3em;
border-radius: 5em;
border: 4em solid black;
padding-top: 1em;
box-shadow: 1em 1em 1em #888888;
}

And for smartphone (portrait) I want to use this:
#page {
padding: 0;
border-radius: 0;
border: 0;
padding-top: 0;
box-shadow: none;
}

So I thought - I just add this new #page css to my responsive.smalltouch.portrait.css
But it does not work. - When I analyse the file with my browser - it seem that the changes are not accepted.
I also installed AT tools, but no changes.

can anybody help?

thanks!