 resizing the window so that the boxes wrap in two or more columns. Try
  resizing the window to be narrower than the boxes so that the text inside
  them wraps into two or more lines.</p>

  <div class="table">
   <div class="float"> this is a float this is a float this is a float </div>
   <div class="float"> this is a float this is a float this is a float </div>
   <div class="float"> this is a float this is a float this is a float </div>
   <div class="float"> this is a float this is a float this is a f