HTML5 - section element is no styling hook?

I've heard that the HTML5 section element should not be used for styling purposes as its a semantic element. So <section class='wrapper'> as a replacement for a div would be wrong, using <div class='wrapper'> would be better.
But what when it makes sense to use the section element AND there is need for wrapper? Is it alright to do <section class='wrapper'> in that cases? Or do I have to to

<section>
  <div class='wrapper'>
    ..
  </div>
</section>

which seems a bit bloated to me?

Solution

I've heard that the HTML5 section element should not be used for styling purposes

Not sure what your source is, but they're wrong. Style away!

That being said, <section> elements should be used when they're semantically appropriate, as per the HTML5 spec:

The section element represents a generic section of a document or application. A section, in this context, is a thematic grouping of content, typically with a heading.