diff --git a/app/views/devise/shared/_links.haml b/app/views/devise/shared/_links.haml
index 0e646e4..c182d32 100644
--- a/app/views/devise/shared/_links.haml
+++ b/app/views/devise/shared/_links.haml
@@ -5,7 +5,8 @@
   %br/
 
 - if devise_mapping.registerable? && controller_name != 'registrations'
-  = link_to t('.sign_up'), new_registration_path(resource_name)
+  = link_to t('.sign_up'), new_registration_path(resource_name),
+    class: 'btn btn-lg btn-block btn-success'
   %br/
 
 - if devise_mapping.recoverable?