How to apply themes to an ordinary div?

How to apply themes to an ordinary div?


Hi all!
First of all, thanks for this great project!
My question may sound stupid to people doing rocket science via
jquery, however still I will ask it.
I am using jquery for a long while. But I never user ui for a real
project. Now I am using some components from ui, and I am having a
strange problem. Strange in the sense that this has never been a
problem for anybody else.
I put an accordion to the page, and I can apply themes to it
perfectly. However it conflicts with the other elements in the web
page in their looks. For instance, my ordinary div laying side by side
to the accordion is not themeable at all. I tried applying some css
classes out of the [theme].css files. They did not work out as I
expected.
Simply, can anyone guide me through how to apply a style to an
ordinary div, so that it looks like the divs contained in the
accordion?
Thanks in advance