2 files changed, 7 insertions, 4 deletions
diff --git a/less/component-animations.less b/less/component-animations.less
index 8393aa44c..1efe45e2c 100644
--- a/less/component-animations.less
+++ b/less/component-animations.less
@@ -16,12 +16,14 @@
 }
 
 .collapse {
+  display: none;
+  &.in {
+    display: block;
+  }
+}
+.collapsing {
   position: relative;
   height: 0;
   overflow: hidden;
   .transition(height .35s ease);
-
-  &.in {
-    height: auto;
-  }
 }
diff --git a/less/navbar.less b/less/navbar.less
index 4335413ef..653a8d6d9 100644
--- a/less/navbar.less
+++ b/less/navbar.less
@@ -330,6 +330,7 @@
     display: none;
   }
   .nav-collapse.collapse {
+    display: block !important;
     height: auto !important;
     overflow: visible !important;
   }