diff --git a/templates/default-layout.hamlet b/templates/default-layout.hamlet
index 20fc699..a52d0c2 100644
--- a/templates/default-layout.hamlet
+++ b/templates/default-layout.hamlet
@@ -7,7 +7,7 @@
         <span class="icon-bar">
       <a class="brand" href="/">
         <img src="/static/img/stackage.png" title="FP Complete">
-      <div>
+      <div class="nav-collapse collapse">
         <ul class="nav">
           $forall route <- [AllSnapshotsR,UploadStackageR]
             $maybe current <- cur