diff --git a/_includes/css/screen.css b/_includes/css/screen.css
index ca0585ae76372..f35ea5d7d3b58 100644
--- a/_includes/css/screen.css
+++ b/_includes/css/screen.css
@@ -253,3 +253,8 @@ i.fa-hn {
   font-size: smaller;
   padding-bottom: 10px
 }
+
+sup {
+  vertical-align: super;
+  font-size: smaller;
+}