diff --git a/styles/common.css b/styles/common.css
index 75738ff..24c7a03 100644
--- a/styles/common.css
+++ b/styles/common.css
@@ -105,3 +105,7 @@ pre code {
   border-right: 1em solid #ffffff;
   user-select: none;
 }
+
+main h2 {
+  margin-bottom: 0;
+}