title: Differences between CSS3 :hover and :focus?
body: <p>The <a href="http://www.w3.org/TR/css3-selectors/#the-user-action-pseudo-classes-hover-act"> <b>CSS3 doc</b></a> talks about :hover and :focus, which seem exactly the same to me. What are the differences between the two? What am I not seeing?</p>
  
  <p>Thanks!</p>