diff --git a/docs/assets/bootstrap.zip b/docs/assets/bootstrap.zip
index d6ecc58693..7f099d78f9 100644
Binary files a/docs/assets/bootstrap.zip and b/docs/assets/bootstrap.zip differ
diff --git a/docs/assets/css/bootstrap-responsive.css b/docs/assets/css/bootstrap-responsive.css
index d9fa91d6c1..b007300c2a 100644
--- a/docs/assets/css/bootstrap-responsive.css
+++ b/docs/assets/css/bootstrap-responsive.css
@@ -19,9 +19,11 @@
   clear: both;
 }
 .hide-text {
-  overflow: hidden;
-  text-indent: 100%;
-  white-space: nowrap;
+  border: 0;
+  font: 0/0 a;
+  text-shadow: none;
+  color: transparent;
+  background-color: transparent;
 }
 .input-block-level {
   display: block;
@@ -169,9 +171,9 @@
     width: 100%;
     min-height: 28px;
     /* Make inputs at least the height of their button counterpart */
-
+  
     /* Makes inputs behave like true block-level elements */
-
+  
     -webkit-box-sizing: border-box;
     -moz-box-sizing: border-box;
     -ms-box-sizing: border-box;
diff --git a/docs/assets/css/bootstrap.css b/docs/assets/css/bootstrap.css
index 495188af7f..081f97ee06 100644
--- a/docs/assets/css/bootstrap.css
+++ b/docs/assets/css/bootstrap.css
@@ -113,9 +113,11 @@ textarea {
   clear: both;
 }
 .hide-text {
-  overflow: hidden;
-  text-indent: 100%;
-  white-space: nowrap;
+  border: 0;
+  font: 0/0 a;
+  text-shadow: none;
+  color: transparent;
+  background-color: transparent;
 }
 .input-block-level {
   display: block;
diff --git a/less/mixins.less b/less/mixins.less
index 0074e89241..a118fe7c46 100644
--- a/less/mixins.less
+++ b/less/mixins.less
@@ -98,13 +98,15 @@
   white-space: nowrap;
 }
 
-// New image replacement
+// CSS image replacement
 // -------------------------
-// Source: http://www.zeldman.com/2012/03/01/replacing-the-9999px-hack-new-image-replacement/
+// Source: https://github.com/h5bp/html5-boilerplate/commit/aa0396eae757
 .hide-text {
-  overflow: hidden;
-  text-indent: 100%;
-  white-space: nowrap;
+  border: 0;
+  font: 0/0 a;
+  text-shadow: none;
+  color: transparent;
+  background-color: transparent;
 }