From: Chris Rebert <code@chrisrebert.com>
Date: Tue, 27 Oct 2015 19:46:02 +0000 (-0700)
Subject: Give better description of IE9 transparent click bug & workaround
X-Git-Tag: v4.0.0-alpha.2~189^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fd39d910582c771b2fb208b416f918b178320eba;p=thirdparty%2Fbootstrap.git

Give better description of IE9 transparent click bug & workaround

[skip sauce]
[skip validator]
---

diff --git a/scss/_carousel.scss b/scss/_carousel.scss
index b02a2cd211..d9fb3b84d6 100644
--- a/scss/_carousel.scss
+++ b/scss/_carousel.scss
@@ -178,9 +178,9 @@
     cursor: pointer;
     // IE9 hack for event handling
     //
-    // Internet Explorer 9 does not support clicks on elements without a set
-    // `background-color`. We cannot use `filter` since that's not viewed as a
-    // background color by the browser. Thus, a hack is needed.
+    // Internet Explorer 9 does not properly handle clicks on elements with a `background-color` of `transparent`,
+    // so we use rgba(0,0,0,0) instead since it's a non-buggy equivalent.
+    // See https://developer.mozilla.org/en-US/docs/Web/Events/click#Internet_Explorer
     background-color: rgba(0,0,0,0); // IE9
     border: 1px solid $carousel-indicator-border-color;
     border-radius: 10px;