diff --git a/app/models/site.rb b/app/models/site.rb
index d47a8e50..9c94c31b 100644
--- a/app/models/site.rb
+++ b/app/models/site.rb
@@ -289,6 +289,8 @@ class Site < ApplicationRecord
   #
   # @return [Hash] { post: Layout }
   def layouts
+    return {} if data['layouts'].blank?
+
     # Crea un Struct dinámico cuyas llaves son los nombres de todos los
     # layouts.  Si pasamos un layout que no existe, obtenemos un
     # NoMethodError
diff --git a/app/policies/site_usuarie_policy.rb b/app/policies/site_usuarie_policy.rb
index f07dc1c9..31e98cfe 100644
--- a/app/policies/site_usuarie_policy.rb
+++ b/app/policies/site_usuarie_policy.rb
@@ -36,8 +36,7 @@ class SiteUsuariePolicy
   end
 
   def accept_invitation?
-    su = site_usuarie
-    (usuarie? || invitade?) && su.usuarie.rol_for_site(su.site).temporal
+    !!site_usuarie.usuarie.rol_for_site(site_usuarie.site)&.temporal
   end
 
   def reject_invitation?
diff --git a/app/views/schemas/_row.haml b/app/views/schemas/_row.haml
index 1d1fca87..ece07727 100644
--- a/app/views/schemas/_row.haml
+++ b/app/views/schemas/_row.haml
@@ -10,4 +10,6 @@
 -# XXX: Solo un nivel de recursividad
 - unless local_assigns[:parent_schema]
   - schema.schemas.each do |s|
+    - next if s.hidden?
     = render 'schemas/row', schema: s, site: site, filter: filter, parent_schema: schema
+
diff --git a/app/views/sites/index.haml b/app/views/sites/index.haml
index fc8184e1..1befa2d0 100644
--- a/app/views/sites/index.haml
+++ b/app/views/sites/index.haml
@@ -4,7 +4,7 @@
     %p.lead= t('.help')
     - if policy(Site).new?
       = link_to t('sites.new.title'), new_site_path,
-        class: 'btn btn-secondary'
+                class: 'btn btn-secondary'
 
   %section.col
     - if @sites.empty?
@@ -15,39 +15,42 @@
       %tbody
         - @sites.each do |site|
           - next unless site.jekyll?
+
           %tr
             %td
               %h2
                 - if policy(site).show?
-                  = link_to site.title, site_posts_path(site, locale: site.default_locale)
+                  = link_to site.title,
+                            site_posts_path(site,
+                                            locale: site.default_locale)
                 - else
                   = site.title
               %p.lead= site.description
-              %br
-              = link_to t('.visit'), site.url, class: 'btn btn-secondary'
-              - if current_usuarie.rol_for_site(site).temporal?
-                = render 'components/btn_base',
-                  text: t('sites.invitations.accept'),
-                  path: site_usuaries_accept_invitation_path(site),
-                  title: t('help.sites.invitations.accept'),
-                  class: 'btn-secondary'
-                = render 'components/btn_base',
-                  text: t('sites.invitations.reject'),
-                  path: site_usuaries_reject_invitation_path(site),
-                  title: t('help.sites.invitations.reject'),
-                  class: 'btn-secondary'
-              - else
-                - if policy(site).show?
-                  = render 'layouts/btn_with_tooltip',
-                    tooltip: t('help.sites.edit_posts'),
-                    type: 'success',
-                    link: site_path(site),
-                    text: t('sites.posts')
-                = render 'sites/build', site: site
-                = render 'sites/moderation_queue', site: site
-                - if policy(SiteUsuarie.new(site, current_usuarie)).index?
-                  = render 'layouts/btn_with_tooltip',
-                    tooltip: t('usuaries.index.help.self'),
-                    text: t('usuaries.index.title'),
-                    type: 'info',
-                    link: site_usuaries_path(site)
+              .d-flex.flex-row
+                = link_to t('.visit'), site.url, class: 'btn btn-secondary'
+                - if current_usuarie.rol_for_site(site).temporal?
+                  = render 'components/btn_base',
+                           text: t('sites.invitations.accept'),
+                           path: site_usuaries_accept_invitation_path(site),
+                           title: t('help.sites.invitations.accept'),
+                           class: 'btn-secondary'
+                  = render 'components/btn_base',
+                           text: t('sites.invitations.reject'),
+                           path: site_usuaries_reject_invitation_path(site),
+                           title: t('help.sites.invitations.reject'),
+                           class: 'btn-secondary'
+                - else
+                  - if policy(site).show?
+                    = render 'layouts/btn_with_tooltip',
+                             tooltip: t('help.sites.edit_posts'),
+                             type: 'success',
+                             link: site_path(site),
+                             text: t('sites.posts')
+                  = render 'sites/build', site: site
+                  = render 'sites/moderation_queue', site: site
+                  - if policy(SiteUsuarie.new(site, current_usuarie)).index?
+                    = render 'layouts/btn_with_tooltip',
+                             tooltip: t('usuaries.index.help.self'),
+                             text: t('usuaries.index.title'),
+                             type: 'info',
+                             link: site_usuaries_path(site)