[imp] css question

[Kevin Konowalec]

Alright all you webgurus....

I want to modify an attribute in the /imp/themes/screen.css file in  
order to better fit in with a theme I'm working on.  However, I don't  
want to change it for ALL themes... just the one I'm working on.  Is  
it possible for one css file to override another?

For example... let's say in /imp/themes/screen.css we have this:

.mboxcontrol {
     color: #000;
     background: #ccc;
}

Is there a way to have /imp/themes/my_great_theme/screen.css have, for  
example:

.mboxcontrol {
     color: #000;
     background: #ff0000;
}

And as such override the previous setting?  I've tried it and it  
doesn't seem to work, but my css-fu is not particularly strong so I'm  
hoping someone knows better.

Thanks!

K