diff --git a/docs/assets/styles/styles.css b/docs/assets/styles/styles.css
index 0a9abe9..6098df0 100644
--- a/docs/assets/styles/styles.css
+++ b/docs/assets/styles/styles.css
@@ -122,7 +122,7 @@ rtc {
   -webkit-ruby-position: inter-character;
   ruby-position: inter-character;
   text-orientation: upright;
-  letter-spacing: 0px;
+  letter-spacing: 3px;
 
   -webkitg_writing-mode: vertical-lr;
   writing-mode: vertical-lr;