diff --git a/app/assets/stylesheets/layout.scss b/app/assets/stylesheets/layout.scss
index 7c3300fa3..1511910b1 100644
--- a/app/assets/stylesheets/layout.scss
+++ b/app/assets/stylesheets/layout.scss
@@ -70,6 +70,11 @@ a {
   }
 }
 
+.button.hollow {
+  border: 1px solid $link;
+  color: $link;
+}
+
 .postfix.button {
   padding: 0;
 }
diff --git a/app/views/budgets/investments/_investment_show.html.erb b/app/views/budgets/investments/_investment_show.html.erb
index 17abf4faf..ebac39186 100644
--- a/app/views/budgets/investments/_investment_show.html.erb
+++ b/app/views/budgets/investments/_investment_show.html.erb
@@ -105,6 +105,7 @@
         <% if browser.device.mobile? %>
           <a href="whatsapp://send?text=<%= investment.title %> <%= budget_investment_url(budget_id: investment.budget_id, id: investment.id) %>" data-action="share/whatsapp/share">
             <span class="icon-whatsapp whatsapp"></span>
+            <span class="sr-only"><%= t("social.whatsapp") %></span>
           </a>
         <% end %>
       </div>
diff --git a/app/views/debates/show.html.erb b/app/views/debates/show.html.erb
index 363a3bab3..096369bc3 100644
--- a/app/views/debates/show.html.erb
+++ b/app/views/debates/show.html.erb
@@ -55,6 +55,7 @@
           <% if browser.device.mobile? %>
             <a href="whatsapp://send?text=<%= @debate.title %> <%= debate_url(@debate) %>" data-action="share/whatsapp/share">
               <span class="icon-whatsapp whatsapp"></span>
+              <span class="sr-only"><%= t("social.whatsapp") %></span>
             </a>
           <% end %>
         </div>
diff --git a/app/views/proposals/_filter_subnav.html.erb b/app/views/proposals/_filter_subnav.html.erb
index fe875c9a9..6347d56b0 100644
--- a/app/views/proposals/_filter_subnav.html.erb
+++ b/app/views/proposals/_filter_subnav.html.erb
@@ -1,6 +1,6 @@
 <div class="row">
   <div class="small-12 column">
-    <ul class="tabs" data-tabs id="example-tabs">
+    <ul class="tabs" data-tabs id="proposals-tabs">
       <li class="tabs-title is-active">
         <%= link_to "#tab-comments" do %>
           <h3>
diff --git a/app/views/proposals/show.html.erb b/app/views/proposals/show.html.erb
index 6209805cf..5d184088d 100644
--- a/app/views/proposals/show.html.erb
+++ b/app/views/proposals/show.html.erb
@@ -128,6 +128,7 @@
           <% if browser.device.mobile? %>
             <a href="whatsapp://send?text=<%= @proposal.title %> <%= proposal_url(@proposal) %>" data-action="share/whatsapp/share">
               <span class="icon-whatsapp whatsapp"></span>
+              <span class="sr-only"><%= t("social.whatsapp") %></span>
             </a>
           <% end %>
         </div>
@@ -136,7 +137,7 @@
   </div>
 <% end %>
 
-<div class="tabs-content" data-tabs-content="example-tabs">
+<div class="tabs-content" data-tabs-content="proposals-tabs" role="tablist">
   <%= render "proposals/filter_subnav" %>
   <%= render "proposals/notifications" %>
 
diff --git a/app/views/spending_proposals/show.html.erb b/app/views/spending_proposals/show.html.erb
index 0da045860..4cdfb688b 100644
--- a/app/views/spending_proposals/show.html.erb
+++ b/app/views/spending_proposals/show.html.erb
@@ -47,6 +47,7 @@
         <% if browser.device.mobile? %>
           <a href="whatsapp://send?text=<%= @spending_proposal.title %> <%= spending_proposal_url(@spending_proposal) %>" data-action="share/whatsapp/share">
             <span class="icon-whatsapp whatsapp"></span>
+            <span class="sr-only"><%= t("social.whatsapp") %></span>
           </a>
         <% end %>
       </div>
diff --git a/config/locales/en.yml b/config/locales/en.yml
index dd9624188..0bd238892 100755
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -195,7 +195,7 @@ en:
       external_link_transparency: Transparency
       external_link_transparency_url: https://transparency.consul
       locale: 'Language:'
-      logo: Consul
+      logo: Consul logo
       management: Management
       moderation: Moderation
       valuation: Valuation
@@ -472,6 +472,7 @@ en:
     facebook: Facebook
     twitter: Twitter
     youtube: YouTube
+    whatsapp: WhatsApp
   spending_proposals:
     form:
       association_name_label: 'If you propose in name of an assocation or collective add the name here'
diff --git a/config/locales/es.yml b/config/locales/es.yml
index 0b8fa4b1c..4df6e870e 100755
--- a/config/locales/es.yml
+++ b/config/locales/es.yml
@@ -195,7 +195,7 @@ es:
       external_link_transparency: Transparencia
       external_link_transparency_url: https://transparency.consul
       locale: 'Idioma:'
-      logo: Consul
+      logo: Consul logo
       management: Gestión
       moderation: Moderar
       valuation: Evaluación
@@ -472,6 +472,7 @@ es:
     facebook: Facebook
     twitter: Twitter
     youtube: YouTube
+    whatsapp: WhatsApp
   spending_proposals:
     form:
       association_name_label: 'Si propones en nombre de una asociación o colectivo añade el nombre aquí'
diff --git a/config/locales/fr.yml b/config/locales/fr.yml
index 596531c0d..cc0b1c590 100644
--- a/config/locales/fr.yml
+++ b/config/locales/fr.yml
@@ -874,7 +874,7 @@ fr:
       external_link_transparency: Transparence
       external_link_transparency_url: https://transparency.consul
       locale: 'Langue :'
-      logo: Consul
+      logo: Consul logo
       moderation: Modération
       more_information: Plus d'information
       my_account_link: Mon compte
diff --git a/config/locales/pt-BR.yml b/config/locales/pt-BR.yml
index 75e7aebb6..febe0ed5c 100644
--- a/config/locales/pt-BR.yml
+++ b/config/locales/pt-BR.yml
@@ -860,7 +860,7 @@ pt-BR:
       external_link_transparency: Transparência
       external_link_transparency_url: https://transparency.consul
       locale: 'Idioma:'
-      logo: Consul
+      logo: Consul logotipo
       moderation: Moderação
       more_information: Mais informações
       my_account_link: Minha conta
diff --git a/config/locales/social_share_button.en.yml b/config/locales/social_share_button.en.yml
index b06cb5ad3..84ee6baba 100644
--- a/config/locales/social_share_button.en.yml
+++ b/config/locales/social_share_button.en.yml
@@ -16,4 +16,4 @@ en:
     tumblr: "Tumblr"
     plurk: "Plurk"
     pinterest: "Pinterest"
-    email: "Email"
+    email: "Email"
\ No newline at end of file
diff --git a/config/locales/social_share_button.es.yml b/config/locales/social_share_button.es.yml
index 45e4ab2a5..aa0c3f224 100644
--- a/config/locales/social_share_button.es.yml
+++ b/config/locales/social_share_button.es.yml
@@ -16,4 +16,4 @@ es:
     tumblr: "Tumblr"
     plurk: "Plurk"
     pinterest: "Pinterest"
-    email: "Correo electrónico"
+    email: "Correo electrónico"
\ No newline at end of file
diff --git a/public/404.html b/public/404.html
index cc6820bba..5b5362192 100644
--- a/public/404.html
+++ b/public/404.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html>
+<html lang="en">
 <head>
   <title>Error 404 | Not found</title>
   <meta name="viewport" content="width=device-width,initial-scale=1">
diff --git a/public/422.html b/public/422.html
index e68d2956f..cca90e5a3 100644
--- a/public/422.html
+++ b/public/422.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html>
+<html lang="en">
 <head>
   <title>Error 422 | The change you wanted was rejected</title>
   <meta name="viewport" content="width=device-width,initial-scale=1">
diff --git a/public/500.html b/public/500.html
index 71978cdce..0b563452a 100644
--- a/public/500.html
+++ b/public/500.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html>
+<html lang="en">
 <head>
   <title>Error 500 | Internal server error</title>
   <meta name="viewport" content="width=device-width,initial-scale=1">