Sass Blueprint Example.sass

#container
  +container

  #content
    +column(18)

  #sidebar
    +column(4,true)
    +push(2)
  
  #header, #footer
    //+column really isn't necessary here since they're full-width elements, so it can be safely omitted
    //+column(24, true)
    :clear both

Unsemantic Blueprint Example (Bad).haml

%html
  %head
    %title Example

  %body
   #container.container
     #header.span-24.last

     #content.span-18
       This is the content

     #sidebar.span-4.push-2.last
        This is the sidebar

     #footer.span-24.last
       This is the footer