diff --git a/docs/assets/css/bootstrap.css b/docs/assets/css/bootstrap.css
index b00f7a4e8d..ea9e77cfb7 100644
--- a/docs/assets/css/bootstrap.css
+++ b/docs/assets/css/bootstrap.css
@@ -4288,15 +4288,8 @@ a.badge:hover {
   height: 20px;
   margin-bottom: 20px;
   overflow: hidden;
-  background-color: #f9f9f9;
-  background-image: -moz-linear-gradient(top, #f5f5f5, #f9f9f9);
-  background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#f5f5f5), to(#f9f9f9));
-  background-image: -webkit-linear-gradient(top, #f5f5f5, #f9f9f9);
-  background-image: -o-linear-gradient(top, #f5f5f5, #f9f9f9);
-  background-image: linear-gradient(to bottom, #f5f5f5, #f9f9f9);
-  background-repeat: repeat-x;
+  background-color: #f5f5f5;
   border-radius: 4px;
-  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#fff5f5f5', endColorstr='#fff9f9f9', GradientType=0);
   -webkit-box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.1);
           box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.1);
 }
@@ -4309,14 +4302,9 @@ a.badge:hover {
   color: #fff;
   text-align: center;
   text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25);
-  background-color: #0480be;
-  background-image: -moz-linear-gradient(top, #149bdf, #0480be);
-  background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#149bdf), to(#0480be));
-  background-image: -webkit-linear-gradient(top, #149bdf, #0480be);
-  background-image: -o-linear-gradient(top, #149bdf, #0480be);
-  background-image: linear-gradient(to bottom, #149bdf, #0480be);
-  background-repeat: repeat-x;
-  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff149bdf', endColorstr='#ff0480be', GradientType=0);
+  background-color: #149bdf;
+  /*#gradient > .vertical(#149bdf, #0480be);*/
+
   -webkit-box-shadow: inset 0 -1px 0 rgba(0, 0, 0, 0.15);
           box-shadow: inset 0 -1px 0 rgba(0, 0, 0, 0.15);
   -webkit-box-sizing: border-box;
@@ -4328,11 +4316,6 @@ a.badge:hover {
           transition: width 0.6s ease;
 }
 
-.progress .bar + .bar {
-  -webkit-box-shadow: inset 1px 0 0 rgba(0, 0, 0, 0.15), inset 0 -1px 0 rgba(0, 0, 0, 0.15);
-          box-shadow: inset 1px 0 0 rgba(0, 0, 0, 0.15), inset 0 -1px 0 rgba(0, 0, 0, 0.15);
-}
-
 .progress-striped .bar {
   background-color: #149bdf;
   background-image: -webkit-gradient(linear, 0 100%, 100% 0, color-stop(0.25, rgba(255, 255, 255, 0.15)), color-stop(0.25, transparent), color-stop(0.5, transparent), color-stop(0.5, rgba(255, 255, 255, 0.15)), color-stop(0.75, rgba(255, 255, 255, 0.15)), color-stop(0.75, transparent), to(transparent));
@@ -4356,14 +4339,9 @@ a.badge:hover {
 
 .progress-danger .bar,
 .progress .bar-danger {
-  background-color: #c43c35;
-  background-image: -moz-linear-gradient(top, #ee5f5b, #c43c35);
-  background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#ee5f5b), to(#c43c35));
-  background-image: -webkit-linear-gradient(top, #ee5f5b, #c43c35);
-  background-image: -o-linear-gradient(top, #ee5f5b, #c43c35);
-  background-image: linear-gradient(to bottom, #ee5f5b, #c43c35);
-  background-repeat: repeat-x;
-  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffee5f5b', endColorstr='#ffc43c35', GradientType=0);
+  background-color: #ee5f5b;
+  /*#gradient > .vertical(#ee5f5b, #c43c35);*/
+
 }
 
 .progress-danger.progress-striped .bar,
@@ -4378,14 +4356,9 @@ a.badge:hover {
 
 .progress-success .bar,
 .progress .bar-success {
-  background-color: #57a957;
-  background-image: -moz-linear-gradient(top, #62c462, #57a957);
-  background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#62c462), to(#57a957));
-  background-image: -webkit-linear-gradient(top, #62c462, #57a957);
-  background-image: -o-linear-gradient(top, #62c462, #57a957);
-  background-image: linear-gradient(to bottom, #62c462, #57a957);
-  background-repeat: repeat-x;
-  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff62c462', endColorstr='#ff57a957', GradientType=0);
+  background-color: #62c462;
+  /*#gradient > .vertical(#62c462, #57a957);*/
+
 }
 
 .progress-success.progress-striped .bar,
@@ -4400,14 +4373,9 @@ a.badge:hover {
 
 .progress-info .bar,
 .progress .bar-info {
-  background-color: #339bb9;
-  background-image: -moz-linear-gradient(top, #5bc0de, #339bb9);
-  background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#5bc0de), to(#339bb9));
-  background-image: -webkit-linear-gradient(top, #5bc0de, #339bb9);
-  background-image: -o-linear-gradient(top, #5bc0de, #339bb9);
-  background-image: linear-gradient(to bottom, #5bc0de, #339bb9);
-  background-repeat: repeat-x;
-  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff5bc0de', endColorstr='#ff339bb9', GradientType=0);
+  background-color: #5bc0de;
+  /*#gradient > .vertical(#5bc0de, #339bb9);*/
+
 }
 
 .progress-info.progress-striped .bar,
@@ -4422,14 +4390,9 @@ a.badge:hover {
 
 .progress-warning .bar,
 .progress .bar-warning {
-  background-color: #f89406;
-  background-image: -moz-linear-gradient(top, #fbb450, #f89406);
-  background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#fbb450), to(#f89406));
-  background-image: -webkit-linear-gradient(top, #fbb450, #f89406);
-  background-image: -o-linear-gradient(top, #fbb450, #f89406);
-  background-image: linear-gradient(to bottom, #fbb450, #f89406);
-  background-repeat: repeat-x;
-  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#fffbb450', endColorstr='#fff89406', GradientType=0);
+  background-color: #fbb450;
+  /*#gradient > .vertical(lighten(#f89406, 15%), #f89406);*/
+
 }
 
 .progress-warning.progress-striped .bar,
diff --git a/less/progress-bars.less b/less/progress-bars.less
index cbff7f2fda..11a95ee9f5 100644
--- a/less/progress-bars.less
+++ b/less/progress-bars.less
@@ -46,28 +46,26 @@
   overflow: hidden;
   height: @line-height-base;
   margin-bottom: @line-height-base;
-  #gradient > .vertical(#f5f5f5, #f9f9f9);
-  .box-shadow(inset 0 1px 2px rgba(0,0,0,.1));
+  background-color: #f5f5f5;
   border-radius: @border-radius-base;
+  .box-shadow(inset 0 1px 2px rgba(0,0,0,.1));
 }
 
 // Bar of progress
 .progress .bar {
+  float: left;
   width: 0%;
   height: 100%;
-  color: #fff;
-  float: left;
   font-size: 12px;
+  color: #fff;
   text-align: center;
   text-shadow: 0 -1px 0 rgba(0,0,0,.25);
-  #gradient > .vertical(#149bdf, #0480be);
+  background-color: #149bdf;
+  /*#gradient > .vertical(#149bdf, #0480be);*/
   .box-shadow(inset 0 -1px 0 rgba(0,0,0,.15));
   .box-sizing(border-box);
   .transition(width .6s ease);
 }
-.progress .bar + .bar {
-  .box-shadow(~"inset 1px 0 0 rgba(0,0,0,.15), inset 0 -1px 0 rgba(0,0,0,.15)");
-}
 
 // Striped bars
 .progress-striped .bar {
@@ -91,7 +89,8 @@
 
 // Danger (red)
 .progress-danger .bar, .progress .bar-danger {
-  #gradient > .vertical(#ee5f5b, #c43c35);
+  background-color: #ee5f5b;
+  /*#gradient > .vertical(#ee5f5b, #c43c35);*/
 }
 .progress-danger.progress-striped .bar, .progress-striped .bar-danger {
   #gradient > .striped(#ee5f5b);
@@ -99,7 +98,8 @@
 
 // Success (green)
 .progress-success .bar, .progress .bar-success {
-  #gradient > .vertical(#62c462, #57a957);
+  background-color: #62c462;
+  /*#gradient > .vertical(#62c462, #57a957);*/
 }
 .progress-success.progress-striped .bar, .progress-striped .bar-success {
   #gradient > .striped(#62c462);
@@ -107,7 +107,8 @@
 
 // Info (teal)
 .progress-info .bar, .progress .bar-info {
-  #gradient > .vertical(#5bc0de, #339bb9);
+  background-color: #5bc0de;
+  /*#gradient > .vertical(#5bc0de, #339bb9);*/
 }
 .progress-info.progress-striped .bar, .progress-striped .bar-info {
   #gradient > .striped(#5bc0de);
@@ -115,7 +116,8 @@
 
 // Warning (orange)
 .progress-warning .bar, .progress .bar-warning {
-  #gradient > .vertical(lighten(#f89406, 15%), #f89406);
+  background-color: lighten(#f89406, 15%);
+  /*#gradient > .vertical(lighten(#f89406, 15%), #f89406);*/
 }
 .progress-warning.progress-striped .bar, .progress-striped .bar-warning {
   #gradient > .striped(lighten(#f89406, 15%));