diff --git a/contents/css/main.css b/contents/css/main.css
index d612606..6b5faa2 100644
--- a/contents/css/main.css
+++ b/contents/css/main.css
@@ -46,7 +46,7 @@ h1 {
 
 h2 {
   font-size: 1.2em;
-  font-weight: 400;
+  font-weight: 600;
   line-height: 1.43;
   margin-bottom: 1.35em;
 }