diff --git a/app/views/invitadxs/show.haml b/app/views/invitadxs/show.haml
index e1d47288..0c23522b 100644
--- a/app/views/invitadxs/show.haml
+++ b/app/views/invitadxs/show.haml
@@ -1,4 +1,4 @@
 .row.align-items-center.justify-content-center.full-height
   .col-md-6.align-self-center
-    .alert{role: 'alert', class: "alert-success"}
+    = render 'bootstrap/alert' do
       = t('.confirmation_sent')
diff --git a/app/views/layouts/_flash.haml b/app/views/layouts/_flash.haml
index 149f946f..7bd7ec0b 100644
--- a/app/views/layouts/_flash.haml
+++ b/app/views/layouts/_flash.haml
@@ -1,3 +1,4 @@
 - flash.each do |type, message|
   - unless type == 'js'
-    .alert{ role: 'alert', class: "alert-#{type}" }= message
+    = render 'bootstrap/alert' do
+      = message
diff --git a/app/views/layouts/_help.haml b/app/views/layouts/_help.haml
index 7a821e2d..6800b524 100644
--- a/app/views/layouts/_help.haml
+++ b/app/views/layouts/_help.haml
@@ -1,3 +1,4 @@
+-# DEPRECADO
 .alert.alert-info.alert-dismissible.fade.show{role: 'alert'}
   - if help.respond_to? :each
     %ul
diff --git a/app/views/posts/_form.haml b/app/views/posts/_form.haml
index e46b2eda..f81cef58 100644
--- a/app/views/posts/_form.haml
+++ b/app/views/posts/_form.haml
@@ -1,7 +1,9 @@
 - unless post.errors.empty?
-  .alert.alert-danger
-    %h4= t('.errors.title')
-    %p= t('.errors.help')
+  - title = t('.errors.title')
+  - help = t('.errors.help')
+  = render 'boostrap/alert' do
+    %h4= title
+    %p= help
 
     %ul
       - post.errors.each do |attribute, errors|
diff --git a/app/views/posts/_submit.haml b/app/views/posts/_submit.haml
index b21b5ff2..717b8bfe 100644
--- a/app/views/posts/_submit.haml
+++ b/app/views/posts/_submit.haml
@@ -1,6 +1,6 @@
 .form-group
   = submit_tag t('.save'), class: 'btn submit-post'
-  .invalid-help.alert.alert-danger.d-none
+  = render 'boostrap/alert', class: 'invalid-help d-none' do
     = site.config.fetch('invalid_help', t('.invalid_help'))
-  .sending-help.alert.alert-success.d-none
+  = render 'boostrap/alert', class: 'sending-help d-none' do
     = site.config.fetch('sending_help', t('.sending_help'))
diff --git a/app/views/posts/attributes/_content.haml b/app/views/posts/attributes/_content.haml
index 36b88872..5db023fb 100644
--- a/app/views/posts/attributes/_content.haml
+++ b/app/views/posts/attributes/_content.haml
@@ -6,7 +6,7 @@
   .editor{ id: attribute, data: { editor: '' } }
     -# Esto es para luego decirle al navegador que se olvide estas cosas.
     = hidden_field_tag 'storage_keys[]', "#{request.original_url}##{attribute}", data: { target: 'storage-key' }
-    .alert.alert-info
+    = render 'bootstrap/alert' do
       :markdown
         #{t('editor.alert')}
     = text_area_tag "#{base}[#{attribute}]", '',
@@ -123,7 +123,7 @@
           %label{ for: 'link-url' }= t('editor.url')
           %input.form-control{ type: 'url', id: 'link-url', name: 'link-url' }/
 
-      .editor-aviso-word.alert.alert-info
+      = render 'bootstrap/alert', class: 'editor-aviso-word' do
         %p= t('editor.word')
 
     .editor-content.form-control.h-auto.mt-1{ contenteditable: 'true' }
diff --git a/app/views/posts/index.haml b/app/views/posts/index.haml
index a82616d8..54587fc5 100644
--- a/app/views/posts/index.haml
+++ b/app/views/posts/index.haml
@@ -34,7 +34,7 @@
     = render 'sites/build', site: @site
 
     - if @site.design.credits
-      .alert.alert-primary{ role: 'alert' }
+      = render 'bootstrap/alert' do
         = sanitize_markdown @site.design.credits
         = link_to t('sites.donations.text'), t('sites.donations.url'), class: 'btn'
         - if @site.design.designer_url
diff --git a/app/views/sites/_form.haml b/app/views/sites/_form.haml
index 9a044c7f..757b8b48 100644
--- a/app/views/sites/_form.haml
+++ b/app/views/sites/_form.haml
@@ -1,7 +1,9 @@
 - unless site.errors.empty?
-  .alert.alert-info
-    %h4= t('.errors.title')
-    %p.lead= t('.errors.help')
+  - title = t('.errors.title')
+  - help = t('.errors.help')
+  = render 'bootstrap/alert' do
+    %h4= title
+    %p.lead= help
     %ul
       - site.errors.messages.each_pair do |attr, error|
         - attr = attr.to_s
@@ -48,7 +50,7 @@
     %h2= t('.design.title')
     %p.lead= t('.help.design')
     - if invalid? site, :design_id
-      .alert.alert-info
+      = render 'bootstrap/alert' do
         = t('activerecord.errors.models.site.attributes.design_id.layout_incompatible.help',
           layouts: site.incompatible_layouts.to_sentence)
     .row.designs