You can place another <div> tag without a class which would pick up the default -
<div class=asdf>hello</div>
<div>small</div>
<div class=asdf>world</div>
but I don't think you can nest the <div>'s if thats what you mean -
<div class=asdf>
hello
<div>small</div>
world
</div>
My thruppence ha'penny ;)
- Steve