{capture name=cats}{the_category seperator=" "}{/capture}
{assign var=cats value=$smarty.capture.cats|strip_tags|strip}
<div class="post {$cats}">

I must admit, that I tried that first - but it gives something like

post <a href="http://diaet.blogsome.com/category/kuriosa/" title="View all posts in Kuriosa" rel="category tag">Kuriosa</a&gt

as output for the class, which obviously won’t work. I thought I could workaround with get_the_category - but I’m not (yet) smarty enough

<div class="post {the_category seperator=' '}">

And then to style the category Foo differently, use an entry in your style sheet like:

.Foo {
// style information here
}

Note that there may be some issues trying to style a category with spaces in the name, and that if you have any category names that clash with other class names in your template, you may get unexpected results.

duringe the Fifa World Cup this year, I’d like to style a special category differently, but don’t want to use the Asides function. Since I’m not much into smarty stuff - could you explain to me, how I could do this using the “the_category”-tag as you mentioned it?

Thanks in advance,
diaet/Jan