directive.haml

.MyOverlay( my-overlay )

  / This is the button that 
  / launches the overlay
  %a.MyOverlay-button
    .MyOverlay-buttonIcon

  / This background div is opaque 
  / while the overlay is active
  .MyOverlay-background

  / This is the content that sits
  / on top of the background
  .MyOverlay-content
    .MyMenu-contentScroller
      - @content.html