source/layouts/default.haml

!!! 5
%html
  %head
    = partial "includes/layout/head"
  %body{class: "#{page_classes} #{'purple-bg' if current_page.data.purple_bg}", data: {spy: "scroll", target: ".qnav", offset: "90"}}
    = partial "includes/layout/header"
    = partial "includes/layout/headline"
    = yield
    = partial "includes/layout/footer"