diff --git a/static/css/main.css b/static/css/main.css
index 03c454d4410e0a7573a37cc9538029a652f94a23..3e21f6483e7a9e16a5321b9c2d4bd9cdc6a7a0a3 100644
--- a/static/css/main.css
+++ b/static/css/main.css
@@ -179,6 +179,7 @@ ul.menu li {
     display: inline-block;
     margin: 0 10px 0;
     padding: 0 5px 0;
+    border-bottom: 3px solid transparent;
 }
 
 ul.menu li a {