diff --git a/src/client/theme-default/styles/vars.css b/src/client/theme-default/styles/vars.css
index 7d9f2dc0..ba2c4f32 100644
--- a/src/client/theme-default/styles/vars.css
+++ b/src/client/theme-default/styles/vars.css
@@ -47,7 +47,7 @@
   --c-bg: var(--c-white);
 
   --code-padding-vertical: 1.5rem;
-  --code-font-size: .85em;
+  --code-font-size: .85rem;
   --code-bg-color: #282c34;
 
 }