de yapa ya no queremos esto

app/assets/stylesheets/application.scss

@@ -55,7 +55,6 @@ ol.breadcrumb {
 
 
 .background-cover {
-  background: image-url("background.jpg") no-repeat center center fixed;
   -webkit-background-size: cover;
   -moz-background-size: cover;
   -o-background-size: cover;

app/views/layouts/application.html.haml

@@ -1,14 +1,26 @@
 !!!
 %html
   %head
-    %meta{content: "text/html; charset=UTF-8", 'http-equiv': "Content-Type"}/
+    %meta{ content: 'text/html; charset=UTF-8',
+           'http-equiv': 'Content-Type' }/
     %title Sutty
+
     = csrf_meta_tags
-    = stylesheet_link_tag 'application', media: 'all', 'data-turbolinks-track': 'reload'
+    = stylesheet_link_tag 'application', media: 'all',
-    = javascript_include_tag 'application', 'data-turbolinks-track': 'reload'
+      'data-turbolinks-track': 'reload'
+    = javascript_include_tag 'application',
+      'data-turbolinks-track': 'reload'
+
     - if @site.try(:persisted?) && @site.try(:config).try(:dig, 'css')
-      %link{rel: 'stylesheet', type: 'text/css', href: @site.get_url_from_site(@site.config.dig('css'))}
+      %link{ rel: 'stylesheet',
-  - style = "background-image: url(#{@site.try(:cover) || image_url('background.jpg')})"
+        type: 'text/css',
-  %body{class: @has_cover ? 'background-cover' : '', style: @has_cover ? style : ''}
+        href: @site.get_url_from_site(@site.config.dig('css')) }
-    #sutty.container-fluid
+
+  - style = "background-image: url(#{@site.try(:cover)})"
+  -# haml-lint:disable InlineStyles
+  %body{ class: @has_cover ? 'background-cover' : '',
+    style: @has_cover ? style : '' }
+
+    .container-fluid#sutty
       = yield
+  -# haml-lint:enable InlineStyles