diff --git a/js/dropdown.js b/js/dropdown.js
index 756fc21f5..8fa712775 100644
--- a/js/dropdown.js
+++ b/js/dropdown.js
@@ -55,7 +55,7 @@
   }
 
   Dropdown.prototype.keydown = function (e) {
-    if (!/(38|40|27)/.test(e.keyCode)) return
+    if (!/(38|40|27|32)/.test(e.which)) return
 
     var $this = $(this)
 
@@ -67,7 +67,7 @@
     var $parent  = getParent($this)
     var isActive = $parent.hasClass('open')
 
-    if (!isActive || (isActive && e.keyCode == 27)) {
+    if ((!isActive && e.which != 27) || (isActive && e.which == 27)) {
       if (e.which == 27) $parent.find(toggle).trigger('focus')
       return $this.trigger('click')
     }
@@ -79,8 +79,8 @@
 
     var index = $items.index($items.filter(':focus'))
 
-    if (e.keyCode == 38 && index > 0)                 index--                        // up
-    if (e.keyCode == 40 && index < $items.length - 1) index++                        // down
+    if (e.which == 38 && index > 0)                 index--                        // up
+    if (e.which == 40 && index < $items.length - 1) index++                        // down
     if (!~index)                                      index = 0
 
     $items.eq(index).trigger('focus')
diff --git a/less/modals.less b/less/modals.less
index 6da50ba92..1de622050 100644
--- a/less/modals.less
+++ b/less/modals.less
@@ -30,10 +30,10 @@
 
   // When fading in the modal, animate it to slide down
   &.fade .modal-dialog {
-    .translate3d(0, -25%, 0);
+    .translate(0, -25%);
     .transition-transform(~"0.3s ease-out");
   }
-  &.in .modal-dialog { .translate3d(0, 0, 0) }
+  &.in .modal-dialog { .translate(0, 0) }
 }
 .modal-open .modal {
   overflow-x: hidden;