diff --git a/contents/css/main.css b/contents/css/main.css
index 6b5faa2..3cca9c3 100644
--- a/contents/css/main.css
+++ b/contents/css/main.css
@@ -84,7 +84,7 @@ hr {
 /* page header */
 
 .header {
-  margin: 3em 0 5em;
+  margin: 3em 0 1em;
 }
 
 .header h1 {