diff --git a/static/css/learnocaml_common.css b/static/css/learnocaml_common.css
index 821b607c5..189950199 100644
--- a/static/css/learnocaml_common.css
+++ b/static/css/learnocaml_common.css
@@ -11,7 +11,7 @@ button, select {
 }
 code, pre, textarea {
   font-family: 'Inconsolata', monospace;
-  font-size: 18px;
+  font-size: 17px;
   line-height: 18px;
 }