Start with a Rails app with authentication via Persona, Foundation CSS

app/views/application/_login_button.html.slim

@@ -0,0 +1,9 @@
+= form_tag '/auth/browser_id/callback', id: 'browser-id-form'
+  = hidden_field_tag(:assertion)
+
+- if signed_in?
+  = link_to session_path, data: { method: :delete, logout: true }
+    | Abmelden
+- else
+  = link_to session_path, data: { 'persona-login' => true }
+    | Anmelden

app/views/layouts/application.html.slim

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+doctype html
+html
+head
+  title Stadtratmonitor Leipzig
+  = stylesheet_link_tag    'application', media: 'all', 'data-turbolinks-track' => true
+  = javascript_include_tag 'vendor/modernizr'
+  = csrf_meta_tags
+
+body
+  .row
+    - flash.each do |name, msg|
+      = content_tag :div, msg, class: name
+  .row
+    .large-8.columns
+      h2#title
+       = link_to 'Willkommen in Leipzig', root_path
+    .large-4.columns
+      ul.inline-list.right
+        li = render 'login_button'
+  .row
+    = yield
+
+  script src="https://login.persona.org/include.js"
+  = javascript_include_tag 'application', 'data-turbolinks-track' => true

app/views/search/index.html.slim

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+= form_tag(search_path, method: :get)
+  = label_tag(:q, 'Suche:')
+  = text_field_tag(:q)
+  = submit_tag 'Suchen', class: 'button'