diff --git a/templates/blocks/block.html.twig b/templates/blocks/block.html.twig
index 0a32bee63c4bca42ca5d97e8137c5e06acfc2a15..dd89a4fbbcab879c0688df3d15a2ad35abaeb98a 100644
--- a/templates/blocks/block.html.twig
+++ b/templates/blocks/block.html.twig
@@ -30,6 +30,7 @@
   'block',
   'block-' ~ configuration.provider|clean_class,
   'block-' ~ plugin_id|clean_class,
+   configuration.contact.style ? 'block-' ~ configuration.contact.style|clean_class,
 ]
 %}