Add autoprefixer

CONTRIBUTING.md

@@ -169,6 +169,7 @@ license your work under the terms of the [MIT License](LICENSE.md).
 - Always a space after a property's colon (e.g., `display: block;` and not `display:block;`).
 - End all lines with a semi-colon.
 - For multiple, comma-separated selectors, place each selector on its own line.
+- Don't add vendor prefixed properties to their unprefixed counterparts (e.g., only `box-sizing` and not also include `-webkit-box-sizing`), as this is done automagically at build time.
 - Attribute selectors, like `input[type="text"]` should always wrap the attribute's value in double quotes, for consistency and safety (see this [blog post on unquoted attribute values](http://mathiasbynens.be/notes/unquoted-attribute-values) that can lead to XSS attacks).
 - Attribute selectors should only be used where absolutely necessary (e.g., form controls) and should be avoided on custom components for performance and explicitness.
 - Series of classes for a component should include a base class (e.g., `.component`) and use the base class as a prefix for modifier and sub-components (e.g., `.component-lg`).

Gruntfile.js

@@ -202,6 +202,33 @@ module.exports = function (grunt) {
       }
     },
 
+    autoprefixer: {
+      options: {
+        browsers: ['last 2 versions', 'ie 8', 'ie 9', 'android 2.3', 'android 4', 'opera 12']
+      },
+      core: {
+        options: {
+          map: true
+        },
+        src: 'dist/css/<%= pkg.name %>.css'
+      },
+      theme: {
+        options: {
+          map: true
+        },
+        src: 'dist/css/<%= pkg.name %>-theme.css'
+      },
+      docs: {
+        src: 'docs/assets/css/docs.css'
+      },
+      examples: {
+        expand: true,
+        cwd: 'docs/examples/',
+        src: ['**/*.css'],
+        dest: 'docs/examples/'
+      }
+    },
+
     css_flip: {
       rtl: {
         files: {
@@ -420,7 +447,7 @@ module.exports = function (grunt) {
 
   // CSS distribution task.
   grunt.registerTask('less-compile', ['less:compileCore', 'less:compileTheme']);
-  grunt.registerTask('dist-css', ['less-compile', 'css_flip', 'less:minify', 'cssmin', 'csscomb', 'usebanner']);
+  grunt.registerTask('dist-css', ['less-compile', 'autoprefixer', 'css_flip', 'less:minify', 'cssmin', 'csscomb', 'usebanner']);
 
   // Docs distribution task.
   grunt.registerTask('dist-docs', 'copy:docs');

docs/assets/css/docs.css

@@ -231,7 +231,9 @@ body {
   text-align: center;
   text-shadow: 0 1px 0 rgba(0,0,0,.1);
   background-color: #6f5499;
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#563d7c), to(#6f5499));
   background-image: -webkit-linear-gradient(top, #563d7c 0%, #6f5499 100%);
+  background-image:      -o-linear-gradient(top, #563d7c 0%, #6f5499 100%);
   background-image:         linear-gradient(to bottom, #563d7c 0%, #6f5499 100%);
   filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#563d7c', endColorstr='#6F5499', GradientType=0);
   background-repeat: repeat-x;
@@ -837,7 +839,8 @@ h1[id] {
   border-color: #e5e5e5 #eee #eee;
   border-style: solid;
   border-width: 1px 0;
-  box-shadow: inset 0 3px 6px rgba(0,0,0,.05);
+  -webkit-box-shadow: inset 0 3px 6px rgba(0,0,0,.05);
+          box-shadow: inset 0 3px 6px rgba(0,0,0,.05);
 }
 /* Echo out a label for the example */
 .bs-example:after {
@@ -868,7 +871,8 @@ h1[id] {
     border-color: #ddd;
     border-width: 1px;
     border-radius: 4px 4px 0 0;
-    box-shadow: none;
+    -webkit-box-shadow: none;
+            box-shadow: none;
   }
   .bs-example + .highlight {
     margin-top: -16px;
@@ -1329,7 +1333,8 @@ h1[id] {
   color: #fff;
   background-color: #d9534f;
   border-bottom: 1px solid #b94441;
-  box-shadow: inset 0 1px 0 rgba(255,255,255,.25);
+  -webkit-box-shadow: inset 0 1px 0 rgba(255,255,255,.25);
+          box-shadow: inset 0 1px 0 rgba(255,255,255,.25);
 }
 .bs-customizer-alert .close {
   margin-top: -4px;
@@ -1346,7 +1351,8 @@ h1[id] {
   color: #fff;
   background-color: #a83c3a;
   border-color: #973634;
-  box-shadow: inset 0 2px 4px rgba(0,0,0,.05), 0 1px 0 rgba(255,255,255,.1);
+  -webkit-box-shadow: inset 0 2px 4px rgba(0,0,0,.05), 0 1px 0 rgba(255,255,255,.1);
+          box-shadow: inset 0 2px 4px rgba(0,0,0,.05), 0 1px 0 rgba(255,255,255,.1);
 }
 
 
@@ -1449,6 +1455,6 @@ h1[id] {
   border-color: rgba(82,168,236,.8);
   outline: 0;
   outline: thin dotted \9; /* IE6-9 */
-  -moz-box-shadow: 0 0 8px rgba(82,168,236,.6);
-       box-shadow: 0 0 8px rgba(82,168,236,.6);
+  -webkit-box-shadow: 0 0 8px rgba(82,168,236,.6);
+          box-shadow: 0 0 8px rgba(82,168,236,.6);
 }

docs/css.html

@@ -2972,6 +2972,7 @@ a {
 
   <h3 id="less-mixins-box-sizing">Box-sizing</h3>
   <p>Reset your components' box model with a single mixin. For context, see this <a href="https://developer.mozilla.org/en-US/docs/CSS/box-sizing" target="_blank">helpful article from Mozilla</a>.</p>
+  <p>The mixin is <strong>deprecated</strong> as of v3.2.0, with the introduction of autoprefixer. To preserve backwards-compatibility, Bootstrap will continue to use the mixin internally until Bootstrap v4.</p>
 {% highlight scss %}
 .box-sizing(@box-model) {
   -webkit-box-sizing: @box-model; // Safari <= 5
@@ -3014,6 +3015,7 @@ a {
 
   <h3 id="less-mixins-transitions">Transitions</h3>
   <p>Three mixins for flexibility. Set all transition information with one, or specify a separate delay and duration as needed.</p>
+  <p>The mixins are <strong>deprecated</strong> as of v3.2.0, with the introduction of autoprefixer. To preserve backwards-compatibility, Bootstrap will continue to use the mixins internally until Bootstrap v4.</p>
 {% highlight scss %}
 .transition(@transition) {
   -webkit-transition: @transition;
@@ -3041,6 +3043,7 @@ a {
 
   <h3 id="less-mixins-transformations">Transformations</h3>
   <p>Rotate, scale, translate (move), or skew any object.</p>
+  <p>The mixins are <strong>deprecated</strong> as of v3.2.0, with the introduction of autoprefixer. To preserve backwards-compatibility, Bootstrap will continue to use the mixins internally until Bootstrap v4.</p>
 {% highlight scss %}
 .rotate(@degrees) {
   -webkit-transform: rotate(@degrees);
@@ -3097,6 +3100,7 @@ a {
 
   <h3 id="less-mixins-animations">Animations</h3>
   <p>A single mixin for using all of CSS3's animation properties in one declaration and other mixins for individual properties.</p>
+  <p>The mixins are <strong>deprecated</strong> as of v3.2.0, with the introduction of autoprefixer. To preserve backwards-compatibility, Bootstrap will continue to use the mixins internally until Bootstrap v4.</p>
 {% highlight scss %}
 .animation(@animation) {
   -webkit-animation: @animation;
@@ -3143,8 +3147,7 @@ a {
   <p>Provide context for form controls within each field.</p>
 {% highlight scss %}
 .placeholder(@color: @input-color-placeholder) {
-  &:-moz-placeholder            { color: @color; } // Firefox 4-18
-  &::-moz-placeholder           { color: @color; } // Firefox 19+
+  &::-moz-placeholder           { color: @color; } // Firefox
   &:-ms-input-placeholder       { color: @color; } // Internet Explorer 10+
   &::-webkit-input-placeholder  { color: @color; } // Safari and Chrome
 }

docs/examples/blog/blog.css

@@ -37,7 +37,8 @@ h6, .h6 {
 
 .blog-masthead {
   background-color: #428bca;
-  box-shadow: inset 0 -2px 5px rgba(0,0,0,.1);
+  -webkit-box-shadow: inset 0 -2px 5px rgba(0,0,0,.1);
+          box-shadow: inset 0 -2px 5px rgba(0,0,0,.1);
 }
 
 /* Nav links */

docs/examples/cover/cover.css

@@ -33,7 +33,8 @@ body {
   color: #fff;
   text-align: center;
   text-shadow: 0 1px 3px rgba(0,0,0,.5);
-  box-shadow: inset 0 0 100px rgba(0,0,0,.5);
+  -webkit-box-shadow: inset 0 0 100px rgba(0,0,0,.5);
+          box-shadow: inset 0 0 100px rgba(0,0,0,.5);
 }
 
 /* Extra markup and styles for table-esque vertical and horizontal centering */

docs/examples/justified-nav/justified-nav.css

@@ -34,11 +34,10 @@ body {
   color: #777;
   text-align: center;
   background-color: #e5e5e5; /* Old browsers */
-  background-image:    -moz-linear-gradient(top, #f5f5f5 0%, #e5e5e5 100%); /* FF3.6+ */
-  background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#f5f5f5), color-stop(100%,#e5e5e5)); /* Chrome,Safari4+ */
-  background-image: -webkit-linear-gradient(top, #f5f5f5 0%,#e5e5e5 100%); /* Chrome 10+,Safari 5.1+ */
-  background-image:      -o-linear-gradient(top, #f5f5f5 0%,#e5e5e5 100%); /* Opera 11.10+ */
-  background-image:         linear-gradient(top, #f5f5f5 0%,#e5e5e5 100%); /* W3C */
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#f5f5f5), to(#e5e5e5));
+  background-image: -webkit-linear-gradient(top, #f5f5f5 0%, #e5e5e5 100%);
+  background-image:      -o-linear-gradient(top, #f5f5f5 0%, #e5e5e5 100%);
+  background-image:         linear-gradient(top, #f5f5f5 0%, #e5e5e5 100%);
   filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#f5f5f5', endColorstr='#e5e5e5',GradientType=0 ); /* IE6-9 */
   background-repeat: repeat-x; /* Repeat the gradient */
   border-bottom: 1px solid #d5d5d5;
@@ -48,7 +47,8 @@ body {
 .nav-justified > .active > a:focus {
   background-color: #ddd;
   background-image: none;
-  box-shadow: inset 0 3px 7px rgba(0,0,0,.15);
+  -webkit-box-shadow: inset 0 3px 7px rgba(0,0,0,.15);
+          box-shadow: inset 0 3px 7px rgba(0,0,0,.15);
 }
 .nav-justified > li:first-child > a {
   border-radius: 5px 5px 0 0;

docs/examples/offcanvas/offcanvas.css

@@ -21,7 +21,7 @@ footer {
   .row-offcanvas {
     position: relative;
     -webkit-transition: all .25s ease-out;
-       -moz-transition: all .25s ease-out;
+         -o-transition: all .25s ease-out;
             transition: all .25s ease-out;
   }
 

less/progress-bars.less

@@ -6,13 +6,6 @@
 // Bar animations
 // -------------------------
 
-// WebKit
-@-webkit-keyframes progress-bar-stripes {
-  from  { background-position: 40px 0; }
-  to    { background-position: 0 0; }
-}
-
-// Spec and IE10+
 @keyframes progress-bar-stripes {
   from  { background-position: 40px 0; }
   to    { background-position: 0 0; }

package.json

@@ -34,6 +34,7 @@
     "canonical-json": "~0.0.4",
     "css-flip": "~0.3.0",
     "grunt": "~0.4.2",
+    "grunt-autoprefixer": "~0.7.2",
     "grunt-banner": "~0.2.1",
     "grunt-contrib-clean": "~0.5.0",
     "grunt-contrib-concat": "~0.3.0",