diff --git a/threadr/style.css b/threadr/style.css
index a7a65bc..5c347bb 100644
--- a/threadr/style.css
+++ b/threadr/style.css
@@ -233,6 +233,7 @@ ul.topnav {
   left: 0;
   top: 0;
   width: 100%;
+  height: 40px;
   overflow: hidden;
   background-color: %COLOR_BLUE%;
   box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);