v.0.5.1

_sass/vendor/bootstrap/_close.scss

@@ -26,6 +26,7 @@
 // Additional properties for button version
 // iOS requires the button element instead of an anchor tag.
 // If you want the anchor version, it requires `href="#"`.
+// See https://developer.mozilla.org/en-US/docs/Web/Events/click#Safari_Mobile
 button.close {
   padding: 0;
   cursor: pointer;