diff --git a/resources/css/blocks/content-box.css b/resources/css/blocks/content-box.css
index f42921c..3d99ee4 100644
--- a/resources/css/blocks/content-box.css
+++ b/resources/css/blocks/content-box.css
@@ -11,6 +11,10 @@
     background-color: var(--content-box-background-color, transparent);
   }
 
+  &.alignwide {
+    @apply !mx-auto;
+  }
+
   .wp-block-group {
   }