title: Blueprint CSS - High level rules for using it
body: <p>I started using Blueprint CSS at about 8AM EDT this morning and I find myself having the following questions:</p>
  
  <ol>
  <li><p>When do I use the container class? </p></li>
  <li><p>How should I think of container conceptually?</p></li>
  <li><p>Do container classes need a span class?  Why or why not?</p></li>
  <li><p>Do container classes need a last class?  Why or why not?</p></li>
  <li><p>Can a container be inside another container?</p></li>
  <li><p>What is the point of push/pull classes?  Can't I just position things with append/prepend?</p></li>
  <li><p>If I use a float class like .right, .left, do I still need to specify a span-x and last?</p></li>
  <li><p>How do I make a row taller?</p></li>
  <li><p>How do I center something vertically in a row?</p></li>
  <li><p>How do I make the root container be 20px from the left of the page instead of having it centered?</p></li>
  </ol>