Thanks for all you're answers so far. They're definitely good advice. I'm not ready to mark one as accepted though. What I was really looking for were concrete tasks that a front-end developers need to be able to produce in a test environment. In other words, what is FizzBuzz for CSS?
I do agree that a solid portfolio and the ability to speak intelligently about the subject will probably minimize the importance of a test. On the other hand, I think we all know candidates who are very good at talking big, but when it comes down to actually demonstrating practical knowledge, they fall short.
@JonathanHolland - I tend to disagree. HTML/CSS is certainly easily learned, but the knowledge gained from a few quick tutorials is nothing compared to someone who has spent years doing layout. There are lots of techniques and practices that a good CSS dev can bring to the table.
@roenving - Perhaps I was redundant. By "pure-css", I meant table-less. I also meant table-less in the sense of not using tables as a layout methodology. However, this is not the question for a div-vs-table layout discussion. Try here. Although I believe that most employers these days are going to be asking if a dev can do layout without the use of tables (as a methodology).
