Using CSS for a fade-in effect on page load

Question

Can CSS transitions be used to allow a text paragraph to fade-in on page load?

I really like how it looked on http://dotmailapp.com/ and would love to use a similar

Answer 1

In response to @A.M.K's question about how to do transitions without jQuery. A very simple example I threw together. If I had time to think this through some more, I might be able to eliminate the JavaScript code altogether:

    
test