diff --git a/docs/assets/css/bootstrap.css b/docs/assets/css/bootstrap.css
index 6d7be48639..86b3864b5f 100644
--- a/docs/assets/css/bootstrap.css
+++ b/docs/assets/css/bootstrap.css
@@ -2923,7 +2923,7 @@ table th[class*="span"],
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#0088cc), to(#0077b3));
   background-image: -webkit-linear-gradient(top, #0088cc, #0077b3);
   background-image: -o-linear-gradient(top, #0088cc, #0077b3);
-  background-image: linear-gradient(top, #0088cc, #0077b3);
+  background-image: linear-gradient(to bottom, #0088cc, #0077b3);
   background-repeat: repeat-x;
   filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff0088cc', endColorstr='#ff0077b3', GradientType=0);
 }
@@ -2937,7 +2937,7 @@ table th[class*="span"],
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#0088cc), to(#0077b3));
   background-image: -webkit-linear-gradient(top, #0088cc, #0077b3);
   background-image: -o-linear-gradient(top, #0088cc, #0077b3);
-  background-image: linear-gradient(top, #0088cc, #0077b3);
+  background-image: linear-gradient(to bottom, #0088cc, #0077b3);
   background-repeat: repeat-x;
   outline: 0;
   filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff0088cc', endColorstr='#ff0077b3', GradientType=0);
@@ -3159,7 +3159,7 @@ button.close {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#ffffff), to(#e6e6e6));
   background-image: -webkit-linear-gradient(top, #ffffff, #e6e6e6);
   background-image: -o-linear-gradient(top, #ffffff, #e6e6e6);
-  background-image: linear-gradient(top, #ffffff, #e6e6e6);
+  background-image: linear-gradient(to bottom, #ffffff, #e6e6e6);
   background-repeat: repeat-x;
   border: 1px solid #bbbbbb;
   *border: 0;
@@ -3309,7 +3309,7 @@ input[type="button"].btn-block {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#0088cc), to(#0044cc));
   background-image: -webkit-linear-gradient(top, #0088cc, #0044cc);
   background-image: -o-linear-gradient(top, #0088cc, #0044cc);
-  background-image: linear-gradient(top, #0088cc, #0044cc);
+  background-image: linear-gradient(to bottom, #0088cc, #0044cc);
   background-repeat: repeat-x;
   border-color: #0044cc #0044cc #002a80;
   border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
@@ -3341,7 +3341,7 @@ input[type="button"].btn-block {
   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(top, #fbb450, #f89406);
+  background-image: linear-gradient(to bottom, #fbb450, #f89406);
   background-repeat: repeat-x;
   border-color: #f89406 #f89406 #ad6704;
   border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
@@ -3373,7 +3373,7 @@ input[type="button"].btn-block {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#ee5f5b), to(#bd362f));
   background-image: -webkit-linear-gradient(top, #ee5f5b, #bd362f);
   background-image: -o-linear-gradient(top, #ee5f5b, #bd362f);
-  background-image: linear-gradient(top, #ee5f5b, #bd362f);
+  background-image: linear-gradient(to bottom, #ee5f5b, #bd362f);
   background-repeat: repeat-x;
   border-color: #bd362f #bd362f #802420;
   border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
@@ -3405,7 +3405,7 @@ input[type="button"].btn-block {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#62c462), to(#51a351));
   background-image: -webkit-linear-gradient(top, #62c462, #51a351);
   background-image: -o-linear-gradient(top, #62c462, #51a351);
-  background-image: linear-gradient(top, #62c462, #51a351);
+  background-image: linear-gradient(to bottom, #62c462, #51a351);
   background-repeat: repeat-x;
   border-color: #51a351 #51a351 #387038;
   border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
@@ -3437,7 +3437,7 @@ input[type="button"].btn-block {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#5bc0de), to(#2f96b4));
   background-image: -webkit-linear-gradient(top, #5bc0de, #2f96b4);
   background-image: -o-linear-gradient(top, #5bc0de, #2f96b4);
-  background-image: linear-gradient(top, #5bc0de, #2f96b4);
+  background-image: linear-gradient(to bottom, #5bc0de, #2f96b4);
   background-repeat: repeat-x;
   border-color: #2f96b4 #2f96b4 #1f6377;
   border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
@@ -3469,7 +3469,7 @@ input[type="button"].btn-block {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#444444), to(#222222));
   background-image: -webkit-linear-gradient(top, #444444, #222222);
   background-image: -o-linear-gradient(top, #444444, #222222);
-  background-image: linear-gradient(top, #444444, #222222);
+  background-image: linear-gradient(to bottom, #444444, #222222);
   background-repeat: repeat-x;
   border-color: #222222 #222222 #000000;
   border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
@@ -4279,7 +4279,7 @@ input[type="submit"].btn.btn-mini {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#ffffff), to(#f2f2f2));
   background-image: -webkit-linear-gradient(top, #ffffff, #f2f2f2);
   background-image: -o-linear-gradient(top, #ffffff, #f2f2f2);
-  background-image: linear-gradient(top, #ffffff, #f2f2f2);
+  background-image: linear-gradient(to bottom, #ffffff, #f2f2f2);
   background-repeat: repeat-x;
   border: 1px solid #d4d4d4;
   -webkit-border-radius: 4px;
@@ -4551,7 +4551,7 @@ input[type="submit"].btn.btn-mini {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#f2f2f2), to(#e5e5e5));
   background-image: -webkit-linear-gradient(top, #f2f2f2, #e5e5e5);
   background-image: -o-linear-gradient(top, #f2f2f2, #e5e5e5);
-  background-image: linear-gradient(top, #f2f2f2, #e5e5e5);
+  background-image: linear-gradient(to bottom, #f2f2f2, #e5e5e5);
   background-repeat: repeat-x;
   border-color: #e5e5e5 #e5e5e5 #bfbfbf;
   border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
@@ -4691,7 +4691,7 @@ input[type="submit"].btn.btn-mini {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#222222), to(#111111));
   background-image: -webkit-linear-gradient(top, #222222, #111111);
   background-image: -o-linear-gradient(top, #222222, #111111);
-  background-image: linear-gradient(top, #222222, #111111);
+  background-image: linear-gradient(to bottom, #222222, #111111);
   background-repeat: repeat-x;
   border-color: #252525;
   filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff222222', endColorstr='#ff111111', GradientType=0);
@@ -4813,7 +4813,7 @@ input[type="submit"].btn.btn-mini {
   background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#151515), to(#040404));
   background-image: -webkit-linear-gradient(top, #151515, #040404);
   background-image: -o-linear-gradient(top, #151515, #040404);
-  background-image: linear-gradient(top, #151515, #040404);
+  background-image: linear-gradient(to bottom, #151515, #040404);
   background-repeat: repeat-x;
   border-color: #040404 #040404 #000000;
   border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
@@ -5720,7 +5720,7 @@ a.badge:hover {
   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(top, #f5f5f5, #f9f9f9);
+  background-image: linear-gradient(to bottom, #f5f5f5, #f9f9f9);
   background-repeat: repeat-x;
   -webkit-border-radius: 4px;
      -moz-border-radius: 4px;
@@ -5744,7 +5744,7 @@ a.badge:hover {
   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(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);
   -webkit-box-shadow: inset 0 -1px 0 rgba(0, 0, 0, 0.15);
@@ -5793,7 +5793,7 @@ a.badge:hover {
   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(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);
 }
@@ -5815,7 +5815,7 @@ a.badge:hover {
   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(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);
 }
@@ -5837,7 +5837,7 @@ a.badge:hover {
   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(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);
 }
@@ -5859,7 +5859,7 @@ a.badge:hover {
   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(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);
 }
diff --git a/less/mixins.less b/less/mixins.less
index 109aa61e60..b734bab2dc 100644
--- a/less/mixins.less
+++ b/less/mixins.less
@@ -425,7 +425,7 @@
     background-image: -webkit-gradient(linear, 0 0, 0 100%, from(@startColor), to(@endColor)); // Safari 4+, Chrome 2+
     background-image: -webkit-linear-gradient(top, @startColor, @endColor); // Safari 5.1+, Chrome 10+
     background-image: -o-linear-gradient(top, @startColor, @endColor); // Opera 11.10
-    background-image: linear-gradient(top, @startColor, @endColor); // Standard, IE10
+    background-image: linear-gradient(to bottom, @startColor, @endColor); // Standard, IE10
     background-repeat: repeat-x;
     filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",argb(@startColor),argb(@endColor))); // IE9 and down
   }