title: How to make this layout in CSS?
body: <p><a href="http://i.stack.imgur.com/wtVj8.png" rel="nofollow">This layout</a></p>
  
  <p>I don't even know how to name it. "Fluid" or "liquid" columns seems to refer to simple dynamic heights. I made this one with and got two questions: is it possible to do it with raw HTML5/CSS3? Is it possible to make it work for 3, 4, ..., n columns?!</p>