preview style

app/models/communication/website/with_style.rb

@@ -2,11 +2,15 @@ module Communication::Website::WithStyle
     extend ActiveSupport::Concern
 
   def preview_style
-    return '' if url.blank?
+    return '' unless has_style?
     load_style if style_outdated? 
     style
   end
 
+  def has_style?
+    !url.blank?
+  end
+
   protected
 
   def load_style

app/views/admin/layouts/preview.html.erb

@@ -4,7 +4,7 @@
     <meta charset="utf-8">
     <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
     <title><%= yield :title %></title>
-    <% if @website %>
+    <% if @website && @website.has_style? %>
       <link rel="stylesheet" media="all" href="<%= style_admin_communication_website_path @website.id, website_id: nil %>" />
     <% else %>
       <%= stylesheet_link_tag 'admin', media: 'all' %>