Merge branch 'master' into pr/15278

Conflicts:
	dist/css/bootstrap.css.map
	dist/css/bootstrap.min.css
	docs/assets/js/customize.min.js
	docs/assets/js/raw-files.min.js
	docs/dist/css/bootstrap.css.map
	docs/dist/css/bootstrap.min.css

21 files changed, 158 insertions, 160 deletions

diff --git a/docs/_includes/components/alerts.html b/docs/_includes/components/alerts.html
index 4edcdd211..7487a968a 100644
--- a/docs/_includes/components/alerts.html
+++ b/docs/_includes/components/alerts.html
@@ -11,7 +11,7 @@
     <p>Alerts don't have default classes, only base and modifier classes. A default gray alert doesn't make too much sense, so you're required to specify a type via contextual class. Choose from success, info, warning, or danger.</p>
   </div>
 
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="simple-alerts">
     <div class="alert alert-success" role="alert">
       <strong>Well done!</strong> You successfully read this important alert message.
     </div>
@@ -38,15 +38,15 @@
     <h4>Requires JavaScript alert plugin</h4>
     <p>For fully functioning, dismissible alerts, you must use the <a href="../javascript/#alerts">alerts JavaScript plugin</a>.</p>
   </div>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="dismissible-alert-css">
     <div class="alert alert-warning alert-dismissible" role="alert">
-      <button type="button" class="close" data-dismiss="alert"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button>
+      <button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">&times;</span></button>
       <strong>Warning!</strong> Better check yourself, you're not looking too good.
     </div>
   </div>
 {% highlight html %}
 <div class="alert alert-warning alert-dismissible" role="alert">
-  <button type="button" class="close" data-dismiss="alert"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button>
+  <button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">&times;</span></button>
   <strong>Warning!</strong> Better check yourself, you're not looking too good.
 </div>
 {% endhighlight %}
@@ -58,7 +58,7 @@
 
   <h2 id="alerts-links">Links in alerts</h2>
   <p>Use the <code>.alert-link</code> utility class to quickly provide matching colored links within any alert.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="alerts-with-links">
     <div class="alert alert-success" role="alert">
       <strong>Well done!</strong> You successfully read <a href="#" class="alert-link">this important alert message</a>.
     </div>
diff --git a/docs/_includes/components/badges.html b/docs/_includes/components/badges.html
index 18ee70a16..a7fff7322 100644
--- a/docs/_includes/components/badges.html
+++ b/docs/_includes/components/badges.html
@@ -3,7 +3,7 @@
 
   <p class="lead">Easily highlight new or unread items by adding a <code>&lt;span class="badge"&gt;</code> to links, Bootstrap navs, and more.</p>
 
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="simple-badges">
     <a href="#">Inbox <span class="badge">42</span></a>
     <br><br>
     <button class="btn btn-primary" type="button">
@@ -28,7 +28,7 @@
 
   <h4>Adapts to active nav states</h4>
   <p>Built-in styles are included for placing badges in active states in pill navigations.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="badges-in-pills">
     <ul class="nav nav-pills" role="tablist">
       <li role="presentation" class="active"><a href="#">Home <span class="badge">42</span></a></li>
       <li role="presentation"><a href="#">Profile</a></li>
diff --git a/docs/_includes/components/breadcrumbs.html b/docs/_includes/components/breadcrumbs.html
index 19abdc265..04d2f1468 100644
--- a/docs/_includes/components/breadcrumbs.html
+++ b/docs/_includes/components/breadcrumbs.html
@@ -3,7 +3,7 @@
 
   <p class="lead">Indicate the current page's location within a navigational hierarchy.</p>
   <p>Separators are automatically added in CSS through <code>:before</code> and <code>content</code>.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="simple-breadcrumbs">
     <ol class="breadcrumb">
       <li class="active">Home</li>
     </ol>
diff --git a/docs/_includes/components/button-dropdowns.html b/docs/_includes/components/button-dropdowns.html
index 9ee7c65c8..e63e9eedd 100644
--- a/docs/_includes/components/button-dropdowns.html
+++ b/docs/_includes/components/button-dropdowns.html
@@ -10,7 +10,7 @@
 
   <h3 id="btn-dropdowns-single">Single button dropdowns</h3>
   <p>Turn a button into a dropdown toggle with some basic markup changes.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="single-button-dropdown">
     <div class="btn-group">
       <button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown" aria-expanded="false">Default <span class="caret"></span></button>
       <ul class="dropdown-menu" role="menu">
@@ -90,7 +90,7 @@
 
   <h3 id="btn-dropdowns-split">Split button dropdowns</h3>
   <p>Similarly, create split button dropdowns with the same markup changes, only with a separate button.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="split-button-dropdown">
     <div class="btn-group">
       <button type="button" class="btn btn-default">Default</button>
       <button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown" aria-expanded="false">
@@ -196,7 +196,7 @@
 
   <h3 id="btn-dropdowns-sizing">Sizing</h3>
   <p>Button dropdowns work with buttons of all sizes.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="button-dropdown-sizing">
     <div class="btn-toolbar" role="toolbar">
       <div class="btn-group">
         <button class="btn btn-default btn-lg dropdown-toggle" type="button" data-toggle="dropdown" aria-expanded="false">
@@ -274,7 +274,7 @@
 
   <h3 id="btn-dropdowns-dropup">Dropup variation</h3>
   <p>Trigger dropdown menus above elements by adding <code>.dropup</code> to the parent.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="button-dropdown-dropup">
     <div class="btn-toolbar" role="toolbar">
       <div class="btn-group dropup">
         <button type="button" class="btn btn-default">Dropup</button>
diff --git a/docs/_includes/components/button-groups.html b/docs/_includes/components/button-groups.html
index a68856e17..9abf56294 100644
--- a/docs/_includes/components/button-groups.html
+++ b/docs/_includes/components/button-groups.html
@@ -17,7 +17,7 @@
 
   <h3 id="btn-groups-single">Basic example</h3>
   <p>Wrap a series of buttons with <code>.btn</code> in <code>.btn-group</code>.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="simple-button-group">
     <div class="btn-group" role="group" aria-label="Basic example">
       <button type="button" class="btn btn-default">Left</button>
       <button type="button" class="btn btn-default">Middle</button>
@@ -34,7 +34,7 @@
 
   <h3 id="btn-groups-toolbar">Button toolbar</h3>
   <p>Combine sets of <code>&lt;div class="btn-group"&gt;</code> into a <code>&lt;div class="btn-toolbar"&gt;</code> for more complex components.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="simple-button-toolbar">
     <div class="btn-toolbar" role="toolbar" aria-label="Toolbar with button groups">
       <div class="btn-group" role="group" aria-label="First group">
         <button type="button" class="btn btn-default">1</button>
@@ -61,8 +61,8 @@
 {% endhighlight %}
 
   <h3 id="btn-groups-sizing">Sizing</h3>
-  <p>Instead of applying button sizing classes to every button in a group, just add <code>.btn-group-*</code> to the <code>.btn-group</code>.</p>
-  <div class="bs-example">
+  <p>Instead of applying button sizing classes to every button in a group, just add <code>.btn-group-*</code> to each <code>.btn-group</code>, including when nesting multiple groups.</p>
+  <div class="bs-example" data-example-id="button-group-sizing">
     <div class="btn-group btn-group-lg" role="group" aria-label="Large button group">
       <button type="button" class="btn btn-default">Left</button>
       <button type="button" class="btn btn-default">Middle</button>
@@ -96,7 +96,7 @@
 
   <h3 id="btn-groups-nested">Nesting</h3>
   <p>Place a <code>.btn-group</code> within another <code>.btn-group</code> when you want dropdown menus mixed with a series of buttons.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="button-group-nesting">
     <div class="btn-group" role="group" aria-label="Button group with nested dropdown">
       <button type="button" class="btn btn-default">1</button>
       <button type="button" class="btn btn-default">2</button>
@@ -133,7 +133,7 @@
 
   <h3 id="btn-groups-vertical">Vertical variation</h3>
   <p>Make a set of buttons appear vertically stacked rather than horizontally. <strong class="text-danger">Split button dropdowns are not supported here.</strong></p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="vertical-button-group">
     <div class="btn-group-vertical" role="group" aria-label="Vertical button group">
       <button type="button" class="btn btn-default">Button</button>
       <button type="button" class="btn btn-default">Button</button>
@@ -202,7 +202,7 @@
 
   <h4>With <code>&lt;a&gt;</code> elements</h4>
   <p>Just wrap a series of <code>.btn</code>s in <code>.btn-group.btn-group-justified</code>.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="simple-justified-button-group">
     <div class="btn-group btn-group-justified" role="group" aria-label="Justified button group">
       <a href="#" class="btn btn-default" role="button">Left</a>
       <a href="#" class="btn btn-default" role="button">Middle</a>
@@ -239,7 +239,7 @@
 
   <h4>With <code>&lt;button&gt;</code> elements</h4>
   <p>To use justified button groups with <code>&lt;button&gt;</code> elements, <strong class="text-danger">you must wrap each button in a button group</strong>. Most browsers don't properly apply our CSS for justification to <code>&lt;button&gt;</code> elements, but since we support button dropdowns, we can work around that.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="button-tag-button-group-justified">
     <div class="btn-group btn-group-justified" role="group" aria-label="Justified button group">
       <div class="btn-group" role="group">
         <button type="button" class="btn btn-default">Left</button>
diff --git a/docs/_includes/components/dropdowns.html b/docs/_includes/components/dropdowns.html
index e1dfc19f6..6a5d4ded5 100644
--- a/docs/_includes/components/dropdowns.html
+++ b/docs/_includes/components/dropdowns.html
@@ -5,7 +5,7 @@
 
   <h3 id="dropdowns-example">Example</h3>
   <p>Wrap the dropdown's trigger and the dropdown menu within <code>.dropdown</code>, or another element that declares <code>position: relative;</code>. Then add the menu's HTML.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="static-dropdown">
     <div class="dropdown clearfix">
       <button class="btn btn-default dropdown-toggle" type="button" id="dropdownMenu1" data-toggle="dropdown" aria-expanded="true">
         Dropdown
diff --git a/docs/_includes/components/glyphicons.html b/docs/_includes/components/glyphicons.html
index bc563c5a6..ed454110b 100644
--- a/docs/_includes/components/glyphicons.html
+++ b/docs/_includes/components/glyphicons.html
@@ -2,7 +2,7 @@
   <h1 id="glyphicons" class="page-header">Glyphicons</h1>
 
   <h2 id="glyphicons-glyphs">Available glyphs</h2>
-  <p>Includes 200 glyphs in font format from the Glyphicon Halflings set. <a href="http://glyphicons.com/">Glyphicons</a> Halflings are normally not available for free, but their creator has made them available for Bootstrap free of cost. As a thank you, we only ask that you include a link back to <a href="http://glyphicons.com/">Glyphicons</a> whenever possible.</p>
+  <p>Includes 260 glyphs in font format from the Glyphicon Halflings set. <a href="http://glyphicons.com/">Glyphicons</a> Halflings are normally not available for free, but their creator has made them available for Bootstrap free of cost. As a thank you, we only ask that you include a link back to <a href="http://glyphicons.com/">Glyphicons</a> whenever possible.</p>
   <div class="bs-glyphicons">
     <ul class="bs-glyphicons-list">
       {% for iconClassName in site.data.glyphicons %}
@@ -48,7 +48,7 @@
 
   <h2 id="glyphicons-examples">Examples</h2>
   <p>Use them in buttons, button groups for a toolbar, navigation, or prepended form inputs.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="glyphicons-general">
     <div class="btn-toolbar" role="toolbar">
       <div class="btn-group">
         <button type="button" class="btn btn-default" aria-label="Left Align"><span class="glyphicon glyphicon-align-left" aria-hidden="true"></span></button>
@@ -74,7 +74,7 @@
 </button>
 {% endhighlight %}
   <p>An icon used in an <a href="#alerts">alert</a> to convey that it's an error message, with additional <code>.sr-only</code> text to convey this hint to users of assistive technologies.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="glyphicons-accessibility">
     <div class="alert alert-danger" role="alert">
       <span class="glyphicon glyphicon-exclamation-sign" aria-hidden="true"></span>
       <span class="sr-only">Error:</span>
diff --git a/docs/_includes/components/input-groups.html b/docs/_includes/components/input-groups.html
index 221fcad54..665c5b7cc 100644
--- a/docs/_includes/components/input-groups.html
+++ b/docs/_includes/components/input-groups.html
@@ -16,101 +16,105 @@
     <h4>Don't mix with other components</h4>
     <p>Do not mix form groups or grid column classes directly with input groups. Instead, nest the input group inside of the form group or grid-related element.</p>
   </div>
-
+  <div class="bs-callout bs-callout-warning" id="callout-inputgroup-form-labels">
+    <h4>Always add labels</h4>
+    <p>Screen readers will have trouble with your forms if you don't include a label for every input. For these input groups, ensure that any additional label or functionality is conveyed to assistive technologies.</p>
+    <p>The exact technique to be used (<code>&lt;label&gt;</code> elements hidden using the <code>.sr-only</code> class, or use of the <code>aria-label</code>, <code>aria-labelledby</code>, <code>aria-describedby</code>, <code>title</code> or <code>placeholder</code> attribute) and what additional information will need to be conveyed will vary depending on the exact type of interface widget you're implementing. The examples in this section provide a few suggested, case-specific approaches.</p>
+  </div>
 
   <h2 id="input-groups-basic">Basic example</h2>
   <p>Place one add-on or button on either side of an input. You may also place one on both sides of an input.</p>
   <p><strong class="text-danger">We do not support multiple add-ons on a single side.</strong></p>
   <p><strong class="text-danger">We do not support multiple form-controls in a single input group.</strong></p>
-  <form class="bs-example bs-example-form">
+  <form class="bs-example bs-example-form" data-example-id="simple-input-groups">
     <div class="input-group">
-      <span class="input-group-addon">@</span>
-      <input type="text" class="form-control" placeholder="Username">
+      <span class="input-group-addon" id="basic-addon1">@</span>
+      <input type="text" class="form-control" placeholder="Username" aria-describedby="basic-addon1">
     </div>
     <br>
     <div class="input-group">
-      <input type="text" class="form-control">
-      <span class="input-group-addon">.00</span>
+      <input type="text" class="form-control" placeholder="Recipient's username" aria-describedby="basic-addon2">
+      <span class="input-group-addon" id="basic-addon2">@example.com</span>
     </div>
     <br>
     <div class="input-group">
       <span class="input-group-addon">$</span>
-      <input type="text" class="form-control">
+      <input type="text" class="form-control" aria-label="Amount (to the nearest dollar)">
       <span class="input-group-addon">.00</span>
     </div>
   </form>
 {% highlight html %}
 <div class="input-group">
-  <span class="input-group-addon">@</span>
-  <input type="text" class="form-control" placeholder="Username">
+  <span class="input-group-addon" id="basic-addon1">@</span>
+  <input type="text" class="form-control" placeholder="Username" aria-describedby="basic-addon1">
 </div>
 
 <div class="input-group">
-  <input type="text" class="form-control">
-  <span class="input-group-addon">.00</span>
+  <input type="text" class="form-control" placeholder="Recipient's username" aria-describedby="basic-addon2">
+  <span class="input-group-addon" id="basic-addon2">@example.com</span>
 </div>
 
 <div class="input-group">
   <span class="input-group-addon">$</span>
-  <input type="text" class="form-control">
+  <input type="text" class="form-control" aria-label="Amount (to the nearest dollar)">
   <span class="input-group-addon">.00</span>
 </div>
 {% endhighlight %}
 
   <h2 id="input-groups-sizing">Sizing</h2>
   <p>Add the relative form sizing classes to the <code>.input-group</code> itself and contents within will automatically resize—no need for repeating the form control size classes on each element.</p>
-  <form class="bs-example bs-example-form">
+  <form class="bs-example bs-example-form" data-example-id="input-group-sizing">
     <div class="input-group input-group-lg">
-      <span class="input-group-addon">@</span>
-      <input type="text" class="form-control" placeholder="Username">
+      <span class="input-group-addon" id="sizing-addon1">@</span>
+      <input type="text" class="form-control" placeholder="Username" aria-describedby="sizing-addon1">
     </div>
     <br>
     <div class="input-group">
-      <span class="input-group-addon">@</span>
-      <input type="text" class="form-control" placeholder="Username">
+      <span class="input-group-addon" id="sizing-addon2">@</span>
+      <input type="text" class="form-control" placeholder="Username" aria-describedby="sizing-addon2">
     </div>
     <br>
     <div class="input-group input-group-sm">
-      <span class="input-group-addon">@</span>
-      <input type="text" class="form-control" placeholder="Username">
+      <span class="input-group-addon" id="sizing-addon3">@</span>
+      <input type="text" class="form-control" placeholder="Username" aria-describedby="sizing-addon3">
     </div>
   </form>
 {% highlight html %}
 <div class="input-group input-group-lg">
-  <span class="input-group-addon">@</span>
-  <input type="text" class="form-control" placeholder="Username">
+  <span class="input-group-addon" id="sizing-addon1">@</span>
+  <input type="text" class="form-control" placeholder="Username" aria-describedby="sizing-addon1">
 </div>
 
 <div class="input-group">
-  <span class="input-group-addon">@</span>
-  <input type="text" class="form-control" placeholder="Username">
+  <span class="input-group-addon" id="sizing-addon2">@</span>
+  <input type="text" class="form-control" placeholder="Username" aria-describedby="sizing-addon2">
 </div>
 
 <div class="input-group input-group-sm">
-  <span class="input-group-addon">@</span>
-  <input type="text" class="form-control" placeholder="Username">
+  <span class="input-group-addon" id="sizing-addon3">@</span>
+  <input type="text" class="form-control" placeholder="Username" aria-describedby="sizing-addon3">
 </div>
 {% endhighlight %}
 
 
   <h2 id="input-groups-checkboxes-radios">Checkboxes and radio addons</h2>
   <p>Place any checkbox or radio option within an input group's addon instead of text.</p>
-  <form class="bs-example bs-example-form">
+  <form class="bs-example bs-example-form" data-example-id="input-group-with-checkbox-radio">
     <div class="row">
       <div class="col-lg-6">
         <div class="input-group">
           <span class="input-group-addon">
-            <input type="checkbox">
+            <input type="checkbox" aria-label="Checkbox for following text input">
           </span>
-          <input type="text" class="form-control">
+          <input type="text" class="form-control" aria-label="Text input with checkbox">
         </div><!-- /input-group -->
       </div><!-- /.col-lg-6 -->
       <div class="col-lg-6">
         <div class="input-group">
           <span class="input-group-addon">
-            <input type="radio">
+            <input type="radio" aria-label="Radio button for following text input">
           </span>
-          <input type="text" class="form-control">
+          <input type="text" class="form-control" aria-label="Text input with radio button">
         </div><!-- /input-group -->
       </div><!-- /.col-lg-6 -->
     </div><!-- /.row -->
@@ -120,17 +124,17 @@
   <div class="col-lg-6">
     <div class="input-group">
       <span class="input-group-addon">
-        <input type="checkbox">
+        <input type="checkbox" aria-label="...">
       </span>
-      <input type="text" class="form-control">
+      <input type="text" class="form-control" aria-label="...">
     </div><!-- /input-group -->
   </div><!-- /.col-lg-6 -->
   <div class="col-lg-6">
     <div class="input-group">
       <span class="input-group-addon">
-        <input type="radio">
+        <input type="radio" aria-label="...">
       </span>
-      <input type="text" class="form-control">
+      <input type="text" class="form-control" aria-label="...">
     </div><!-- /input-group -->
   </div><!-- /.col-lg-6 -->
 </div><!-- /.row -->
@@ -139,19 +143,19 @@
 
   <h2 id="input-groups-buttons">Button addons</h2>
   <p>Buttons in input groups are a bit different and require one extra level of nesting. Instead of <code>.input-group-addon</code>, you'll need to use <code>.input-group-btn</code> to wrap the buttons. This is required due to default browser styles that cannot be overridden.</p>
-  <form class="bs-example bs-example-form">
+  <form class="bs-example bs-example-form" data-example-id="input-group-with-button">
     <div class="row">
       <div class="col-lg-6">
         <div class="input-group">
           <span class="input-group-btn">
             <button class="btn btn-default" type="button">Go!</button>
           </span>
-          <input type="text" class="form-control">
+          <input type="text" class="form-control" placeholder="Search for...">
         </div><!-- /input-group -->
       </div><!-- /.col-lg-6 -->
       <div class="col-lg-6">
         <div class="input-group">
-          <input type="text" class="form-control">
+          <input type="text" class="form-control" placeholder="Search for...">
           <span class="input-group-btn">
             <button class="btn btn-default" type="button">Go!</button>
           </span>
@@ -166,12 +170,12 @@
       <span class="input-group-btn">
         <button class="btn btn-default" type="button">Go!</button>
       </span>
-      <input type="text" class="form-control">
+      <input type="text" class="form-control" placeholder="Search for...">
     </div><!-- /input-group -->
   </div><!-- /.col-lg-6 -->
   <div class="col-lg-6">
     <div class="input-group">
-      <input type="text" class="form-control">
+      <input type="text" class="form-control" placeholder="Search for...">
       <span class="input-group-btn">
         <button class="btn btn-default" type="button">Go!</button>
       </span>
@@ -182,7 +186,7 @@
 
   <h2 id="input-groups-buttons-dropdowns">Buttons with dropdowns</h2>
   <p></p>
-  <form class="bs-example bs-example-form">
+  <form class="bs-example bs-example-form" data-example-id="input-group-dropdowns">
     <div class="row">
       <div class="col-lg-6">
         <div class="input-group">
@@ -196,12 +200,12 @@
               <li><a href="#">Separated link</a></li>
             </ul>
           </div><!-- /btn-group -->
-          <input type="text" class="form-control">
+          <input type="text" class="form-control" aria-label="Text input with dropdown button">
         </div><!-- /input-group -->
       </div><!-- /.col-lg-6 -->
       <div class="col-lg-6">
         <div class="input-group">
-          <input type="text" class="form-control">
+          <input type="text" class="form-control" aria-label="Text input with dropdown button">
           <div class="input-group-btn">
             <button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown" aria-expanded="false">Action <span class="caret"></span></button>
             <ul class="dropdown-menu dropdown-menu-right" role="menu">
@@ -230,12 +234,12 @@
           <li><a href="#">Separated link</a></li>
         </ul>
       </div><!-- /btn-group -->
-      <input type="text" class="form-control">
+      <input type="text" class="form-control" aria-label="...">
     </div><!-- /input-group -->
   </div><!-- /.col-lg-6 -->
   <div class="col-lg-6">
     <div class="input-group">
-      <input type="text" class="form-control">
+      <input type="text" class="form-control" aria-label="...">
       <div class="input-group-btn">
         <button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown" aria-expanded="false">Action <span class="caret"></span></button>
         <ul class="dropdown-menu dropdown-menu-right" role="menu">
@@ -252,12 +256,12 @@
 {% endhighlight %}
 
   <h2 id="input-groups-buttons-segmented">Segmented buttons</h2>
-  <form class="bs-example bs-example-form">
+  <form class="bs-example bs-example-form" data-example-id="input-group-segmented-buttons">
     <div class="row">
       <div class="col-lg-6">
         <div class="input-group">
           <div class="input-group-btn">
-            <button type="button" class="btn btn-default" tabindex="-1">Action</button>
+            <button type="button" class="btn btn-default">Action</button>
             <button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown" aria-expanded="false">
               <span class="caret"></span>
               <span class="sr-only">Toggle Dropdown</span>
@@ -270,14 +274,14 @@
               <li><a href="#">Separated link</a></li>
             </ul>
           </div>
-          <input type="text" class="form-control">
+          <input type="text" class="form-control" aria-label="Text input with segmented button dropdown">
         </div><!-- /.input-group -->
       </div><!-- /.col-lg-6 -->
       <div class="col-lg-6">
         <div class="input-group">
-          <input type="text" class="form-control">
+          <input type="text" class="form-control" aria-label="Text input with segmented button dropdown">
           <div class="input-group-btn">
-            <button type="button" class="btn btn-default" tabindex="-1">Action</button>
+            <button type="button" class="btn btn-default">Action</button>
             <button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown" aria-expanded="false">
               <span class="caret"></span>
               <span class="sr-only">Toggle Dropdown</span>
@@ -299,11 +303,11 @@
   <div class="input-group-btn">
     <!-- Button and dropdown menu -->
   </div>
-  <input type="text" class="form-control">
+  <input type="text" class="form-control" aria-label="...">
 </div>
 
 <div class="input-group">
-  <input type="text" class="form-control">
+  <input type="text" class="form-control" aria-label="...">
   <div class="input-group-btn">
     <!-- Button and dropdown menu -->
   </div>
diff --git a/docs/_includes/components/jumbotron.html b/docs/_includes/components/jumbotron.html
index f5de9753e..b61ffe061 100644
--- a/docs/_includes/components/jumbotron.html
+++ b/docs/_includes/components/jumbotron.html
@@ -2,7 +2,7 @@
   <h1 id="jumbotron" class="page-header">Jumbotron</h1>
 
   <p>A lightweight, flexible component that can optionally extend the entire viewport to showcase key content on your site.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="simple-jumbotron">
     <div class="jumbotron">
       <h1>Hello, world!</h1>
       <p>This is a simple hero unit, a simple jumbotron-style component for calling extra attention to featured content or information.</p>
diff --git a/docs/_includes/components/labels.html b/docs/_includes/components/labels.html
index 0a9c6139f..ef85cc67d 100644
--- a/docs/_includes/components/labels.html
+++ b/docs/_includes/components/labels.html
@@ -2,7 +2,7 @@
   <h1 id="labels" class="page-header">Labels</h1>
 
   <h3>Example</h3>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="labels-in-headings">
     <h1>Example heading <span class="label label-default">New</span></h1>
     <h2>Example heading <span class="label label-default">New</span></h2>
     <h3>Example heading <span class="label label-default">New</span></h3>
@@ -16,7 +16,7 @@
 
   <h3>Available variations</h3>
   <p>Add any of the below mentioned modifier classes to change the appearance of a label.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="label-variants">
     <span class="label label-default">Default</span>
     <span class="label label-primary">Primary</span>
     <span class="label label-success">Success</span>
diff --git a/docs/_includes/components/list-group.html b/docs/_includes/components/list-group.html
index f9c24c676..1d02b84f3 100644
--- a/docs/_includes/components/list-group.html
+++ b/docs/_includes/components/list-group.html
@@ -5,7 +5,7 @@
 
   <h3 id="list-group-basic">Basic example</h3>
   <p>The most basic list group is simply an unordered list with list items, and the proper classes. Build upon it with the options that follow, or your own CSS as needed.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="simple-list-group">
     <ul class="list-group">
       <li class="list-group-item">Cras justo odio</li>
       <li class="list-group-item">Dapibus ac facilisis in</li>
@@ -26,7 +26,7 @@
 
   <h3 id="list-group-badges">Badges</h3>
   <p>Add the badges component to any list group item and it will automatically be positioned on the right.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="list-group-badges">
     <ul class="list-group">
       <li class="list-group-item">
         <span class="badge">14</span>
@@ -53,7 +53,7 @@
 
   <h3 id="list-group-linked">Linked items</h3>
   <p>Linkify list group items by using anchor tags instead of list items (that also means a parent <code>&lt;div&gt;</code> instead of an <code>&lt;ul&gt;</code>). No need for individual parents around each element.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="list-group-anchors">
     <div class="list-group">
       <a href="#" class="list-group-item active">
         Cras justo odio
@@ -78,7 +78,7 @@
 
   <h3 id="list-group-disabled">Disabled items</h3>
   <p>Add <code>.disabled</code> to a <code>.list-group-item</code> to gray it out to appear disabled.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="list-group-disabled">
     <div class="list-group">
       <a href="#" class="list-group-item disabled">
         Cras justo odio
@@ -103,7 +103,7 @@
 
   <h3 id="list-group-contextual-classes">Contextual classes</h3>
   <p>Use contextual classes to style list items, default or linked. Also includes <code>.active</code> state.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="list-group-variants">
     <div class="row">
       <div class="col-sm-6">
         <ul class="list-group">
@@ -140,7 +140,7 @@
 
   <h3 id="list-group-custom-content">Custom content</h3>
   <p>Add nearly any HTML within, even for linked list groups like the one below.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="list-group-custom-content">
     <div class="list-group">
       <a href="#" class="list-group-item active">
         <h4 class="list-group-item-heading">List group item heading</h4>
diff --git a/docs/_includes/components/media.html b/docs/_includes/components/media.html
index 6f31804bf..3d1f75dbe 100644
--- a/docs/_includes/components/media.html
+++ b/docs/_includes/components/media.html
@@ -5,7 +5,7 @@
 
   <h3 id="media-default">Default media</h3>
   <p>The default media displays a media object (images, video, audio) to the left or right of a content block.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="default-media">
     <div class="media">
       <div class="media-left">
         <a href="#">
@@ -84,7 +84,7 @@
   <p>The classes <code>.pull-left</code> and <code>.pull-right</code> also exist and were previously used as part of the media component, but are deprecated for that use as of v3.3.0. They are approximately equivalent to <code>.media-left</code> and <code>.media-right</code>, except that <code>.media-right</code> should be placed after the <code>.media-body</code> in the html.</p>
   <h3 id="media-alignment">Media alignment</h3>
   <p>The images or other media can be aligned top, middle, or bottom. The default is top aligned.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="media-alignment">
     <div class="media">
       <div class="media-left">
         <a href="#">
@@ -138,7 +138,7 @@
 
   <h3 id="media-list">Media list</h3>
   <p>With a bit of extra markup, you can use media inside list (useful for comment threads or articles lists).</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="media-list">
     <ul class="media-list">
       <li class="media">
         <div class="media-left">
diff --git a/docs/_includes/components/navbar.html b/docs/_includes/components/navbar.html
index db157de7c..6cd731ac6 100644
--- a/docs/_includes/components/navbar.html
+++ b/docs/_includes/components/navbar.html
@@ -28,7 +28,7 @@
     <p>Be sure to use a <code>&lt;nav&gt;</code> element or, if using a more generic element such as a <code>&lt;div&gt;</code>, add a <code>role="navigation"</code> to every navbar to explicitly identify it as a landmark region for users of assistive technologies.</p>
   </div>
 
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="default-navbar">
     <nav class="navbar navbar-default">
       <div class="container-fluid">
         <!-- Brand and toggle get grouped for better mobile display -->
@@ -142,7 +142,7 @@
 
   <h2 id="navbar-brand-image">Brand image</h2>
   <p>Replace the navbar brand with your own image by swapping the text for an <code>&lt;img&gt;</code>. Since the <code>.navbar-brand</code> has its own padding and height, you may need to override some CSS depending on your image.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="navbar-with-image-brand">
     <nav class="navbar navbar-default">
       <div class="container-fluid">
         <div class="navbar-header">
@@ -169,7 +169,7 @@
   <h2 id="navbar-forms">Forms</h2>
   <p>Place form content within <code>.navbar-form</code> for proper vertical alignment and collapsed behavior in narrow viewports. Use the alignment options to decide where it resides within the navbar content.</p>
   <p>As a heads up, <code>.navbar-form</code> shares much of its code with <code>.form-inline</code> via mixin. <strong class="text-danger">Some form controls, like input groups, may require fixed widths to be show up properly within a navbar.</strong></p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="navbar-form">
     <nav class="navbar navbar-default">
       <div class="container-fluid">
         <div class="navbar-header">
@@ -208,13 +208,13 @@
 
   <div class="bs-callout bs-callout-warning" id="callout-navbar-form-labels">
     <h4>Always add labels</h4>
-    <p>Screen readers will have trouble with your forms if you don't include a label for every input. For these inline navbar forms, you can hide the labels using the <code>.sr-only</code> class.</p>
+    <p>Screen readers will have trouble with your forms if you don't include a label for every input. For these inline forms, you can hide the labels using the <code>.sr-only</code> class. There are further alternative methods of providing a label for assistive technologies, such as the <code>aria-label</code>, <code>aria-labelledby</code> or <code>title</code> attribute. If none of these is present, screen readers may resort to using the <code>placeholder</code> attribute, if present, but note that use of <code>placeholder</code> as a replacement for other labelling methods is not advised.</p>
   </div>
 
 
   <h2 id="navbar-buttons">Buttons</h2>
   <p>Add the <code>.navbar-btn</code> class to <code>&lt;button&gt;</code> elements not residing in a <code>&lt;form&gt;</code> to vertically center them in the navbar.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="navbar-button">
     <nav class="navbar navbar-default">
       <div class="container-fluid">
         <div class="navbar-header">
@@ -243,7 +243,7 @@
 
   <h2 id="navbar-text">Text</h2>
   <p>Wrap strings of text in an element with <code>.navbar-text</code>, usually on a <code>&lt;p&gt;</code> tag for proper leading and color.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="navbar-text">
     <nav class="navbar navbar-default">
       <div class="container-fluid">
         <div class="navbar-header">
@@ -268,7 +268,7 @@
 
   <h2 id="navbar-links">Non-nav links</h2>
   <p>For folks using standard links that are not within the regular navbar navigation component, use the <code>.navbar-link</code> class to add the proper colors for the default and inverse navbar options.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="navbar-link">
     <nav class="navbar navbar-default">
       <div class="container-fluid">
         <div class="navbar-header">
@@ -303,7 +303,7 @@
 
   <h2 id="navbar-fixed-top">Fixed to top</h2>
   <p>Add <code>.navbar-fixed-top</code> and include a <code>.container</code> or <code>.container-fluid</code> to center and pad navbar content.</p>
-  <div class="bs-example bs-navbar-top-example">
+  <div class="bs-example bs-navbar-top-example" data-example-id="navbar-fixed-to-top">
     <nav class="navbar navbar-default navbar-fixed-top">
       <!-- We use the fluid option here to avoid overriding the fixed width of a normal container within the narrow content columns. -->
       <div class="container-fluid">
@@ -347,7 +347,7 @@ body { padding-top: 70px; }
 
   <h2 id="navbar-fixed-bottom">Fixed to bottom</h2>
   <p>Add <code>.navbar-fixed-bottom</code> and include a <code>.container</code> or <code>.container-fluid</code> to center and pad navbar content.</p>
-  <div class="bs-example bs-navbar-bottom-example">
+  <div class="bs-example bs-navbar-bottom-example" data-example-id="navbar-fixed-to-bottom">
     <nav class="navbar navbar-default navbar-fixed-bottom">
       <!-- We use the fluid option here to avoid overriding the fixed width of a normal container within the narrow content columns. -->
       <div class="container-fluid">
@@ -392,7 +392,7 @@ body { padding-bottom: 70px; }
   <h2 id="navbar-static-top">Static top</h2>
   <p>Create a full-width navbar that scrolls away with the page by adding <code>.navbar-static-top</code> and include a <code>.container</code> or <code>.container-fluid</code> to center and pad navbar content.</p>
   <p>Unlike the <code>.navbar-fixed-*</code> classes, you do not need to change any padding on the <code>body</code>.</p>
-  <div class="bs-example bs-navbar-top-example">
+  <div class="bs-example bs-navbar-top-example" data-example-id="navbar-static-top">
     <nav class="navbar navbar-default navbar-static-top">
       <!-- We use the fluid option here to avoid overriding the fixed width of a normal container within the narrow content columns. -->
       <div class="container-fluid">
@@ -428,7 +428,7 @@ body { padding-bottom: 70px; }
 
   <h2 id="navbar-inverted">Inverted navbar</h2>
   <p>Modify the look of the navbar by adding <code>.navbar-inverse</code>.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="inverted-navbar">
     <nav class="navbar navbar-inverse">
       <div class="container-fluid">
         <!-- Brand and toggle get grouped for better mobile display -->
diff --git a/docs/_includes/components/navs.html b/docs/_includes/components/navs.html
index 01420a342..4a0a4b6c3 100644
--- a/docs/_includes/components/navs.html
+++ b/docs/_includes/components/navs.html
@@ -15,7 +15,7 @@
 
   <h2 id="nav-tabs">Tabs</h2>
   <p>Note the <code>.nav-tabs</code> class requires the <code>.nav</code> base class.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="simple-nav-tabs">
     <ul class="nav nav-tabs">
       <li role="presentation" class="active"><a href="#">Home</a></li>
       <li role="presentation"><a href="#">Profile</a></li>
@@ -33,7 +33,7 @@
 
   <h2 id="nav-pills">Pills</h2>
   <p>Take that same HTML, but use <code>.nav-pills</code> instead:</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="simple-nav-pills">
     <ul class="nav nav-pills">
       <li role="presentation" class="active"><a href="#">Home</a></li>
       <li role="presentation"><a href="#">Profile</a></li>
@@ -48,7 +48,7 @@
 </ul>
 {% endhighlight %}
   <p>Pills are also vertically stackable. Just add <code>.nav-stacked</code>.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="simple-nav-stacked">
     <ul class="nav nav-pills nav-stacked" style="max-width: 300px;">
       <li role="presentation" class="active"><a href="#">Home</a></li>
       <li role="presentation"><a href="#">Profile</a></li>
@@ -69,7 +69,7 @@
     <h4>Safari and responsive justified navs</h4>
     <p>As of v8.0, Safari exhibits a bug in which resizing your browser horizontally causes rendering errors in the justified nav that are cleared upon refreshing. This bug is also shown in the <a href="../examples/justified-nav/">justified nav example</a>.</p>
   </div>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="simple-nav-justified">
     <ul class="nav nav-tabs nav-justified">
       <li role="presentation" class="active"><a href="#">Home</a></li>
       <li role="presentation"><a href="#">Profile</a></li>
@@ -100,7 +100,7 @@
     <p>This class will only change the <code>&lt;a&gt;</code>'s appearance, not its functionality. Use custom JavaScript to disable links here.</p>
   </div>
 
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="disabled-nav-link">
     <ul class="nav nav-pills">
       <li role="presentation"><a href="#">Clickable link</a></li>
       <li role="presentation"><a href="#">Clickable link</a></li>
@@ -120,7 +120,7 @@
   <p>Add dropdown menus with a little extra HTML and the <a href="../javascript/#dropdowns">dropdowns JavaScript plugin</a>.</p>
 
   <h3>Tabs with dropdowns</h3>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="nav-tabs-with-dropdown">
     <ul class="nav nav-tabs">
       <li role="presentation" class="active"><a href="#">Home</a></li>
       <li role="presentation"><a href="#">Help</a></li>
@@ -154,7 +154,7 @@
 {% endhighlight %}
 
   <h3>Pills with dropdowns</h3>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="nav-pills-with-dropdown">
     <ul class="nav nav-pills">
       <li role="presentation" class="active"><a href="#">Home</a></li>
       <li role="presentation"><a href="#">Help</a></li>
diff --git a/docs/_includes/components/page-header.html b/docs/_includes/components/page-header.html
index 2f5aed2bd..3f7a8a094 100644
--- a/docs/_includes/components/page-header.html
+++ b/docs/_includes/components/page-header.html
@@ -2,7 +2,7 @@
   <h1 id="page-header" class="page-header">Page header</h1>
 
   <p>A simple shell for an <code>h1</code> to appropriately space out and segment sections of content on a page. It can utilize the <code>h1</code>'s default <code>small</code> element, as well as most other components (with additional styles).</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="simple-page-header">
     <div class="page-header">
       <h1>Example page header <small>Subtext for header</small></h1>
     </div>
diff --git a/docs/_includes/components/pagination.html b/docs/_includes/components/pagination.html
index c58f8702e..46ee1f1ed 100644
--- a/docs/_includes/components/pagination.html
+++ b/docs/_includes/components/pagination.html
@@ -5,13 +5,12 @@
 
   <h2 id="pagination-default">Default pagination</h2>
   <p>Simple pagination inspired by Rdio, great for apps and search results. The large block is hard to miss, easily scalable, and provides large click areas.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="simple-pagination">
     <nav>
       <ul class="pagination">
         <li>
-          <a href="#">
+          <a href="#" aria-label="Previous">
             <span aria-hidden="true">&laquo;</span>
-            <span class="sr-only">Previous</span>
           </a>
         </li>
         <li><a href="#">1</a></li>
@@ -20,9 +19,8 @@
         <li><a href="#">4</a></li>
         <li><a href="#">5</a></li>
         <li>
-          <a href="#">
+          <a href="#" aria-label="Next">
             <span aria-hidden="true">&raquo;</span>
-            <span class="sr-only">Next</span>
           </a>
         </li>
       </ul>
@@ -32,9 +30,8 @@
 <nav>
   <ul class="pagination">
     <li>
-      <a href="#">
+      <a href="#" aria-label="Previous">
         <span aria-hidden="true">&laquo;</span>
-        <span class="sr-only">Previous</span>
       </a>
     </li>
     <li><a href="#">1</a></li>
@@ -43,9 +40,8 @@
     <li><a href="#">4</a></li>
     <li><a href="#">5</a></li>
     <li>
-      <a href="#">
+      <a href="#" aria-label="Next">
         <span aria-hidden="true">&raquo;</span>
-        <span class="sr-only">Next</span>
       </a>
     </li>
   </ul>
@@ -54,23 +50,23 @@
 
   <h3>Disabled and active states</h3>
   <p>Links are customizable for different circumstances. Use <code>.disabled</code> for unclickable links and <code>.active</code> to indicate the current page.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="disabled-active-pagination">
     <nav>
       <ul class="pagination">
-        <li class="disabled"><a href="#"><span aria-hidden="true">&laquo;</span><span class="sr-only">Previous</span></a></li>
+        <li class="disabled"><a href="#" aria-label="Previous"><span aria-hidden="true">&laquo;</span></a></li>
         <li class="active"><a href="#">1 <span class="sr-only">(current)</span></a></li>
         <li><a href="#">2</a></li>
         <li><a href="#">3</a></li>
         <li><a href="#">4</a></li>
         <li><a href="#">5</a></li>
-        <li><a href="#"><span aria-hidden="true">&raquo;</span><span class="sr-only">Next</span></a></li>
+        <li><a href="#" aria-label="Next"><span aria-hidden="true">&raquo;</span></a></li>
      </ul>
    </nav>
   </div>
 {% highlight html %}
 <nav>
   <ul class="pagination">
-    <li class="disabled"><a href="#"><span aria-hidden="true">&laquo;</span><span class="sr-only">Previous</span></a></li>
+    <li class="disabled"><a href="#" aria-label="Previous"><span aria-hidden="true">&laquo;</span></a></li>
     <li class="active"><a href="#">1 <span class="sr-only">(current)</span></a></li>
     ...
   </ul>
@@ -83,7 +79,6 @@
     <li class="disabled">
       <span>
         <span aria-hidden="true">&laquo;</span>
-        <span class="sr-only">Previous</span>
       </span>
     </li>
     <li class="active">
@@ -97,38 +92,38 @@
 
   <h3>Sizing</h3>
   <p>Fancy larger or smaller pagination? Add <code>.pagination-lg</code> or <code>.pagination-sm</code> for additional sizes.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="pagination-sizing">
     <nav>
       <ul class="pagination pagination-lg">
-        <li><a href="#"><span aria-hidden="true">&laquo;</span><span class="sr-only">Previous</span></a></li>
+        <li><a href="#" aria-label="Previous"><span aria-hidden="true">&laquo;</span></a></li>
         <li><a href="#">1</a></li>
         <li><a href="#">2</a></li>
         <li><a href="#">3</a></li>
         <li><a href="#">4</a></li>
         <li><a href="#">5</a></li>
-        <li><a href="#"><span aria-hidden="true">&raquo;</span><span class="sr-only">Next</span></a></li>
+        <li><a href="#" aria-label="Next"><span aria-hidden="true">&raquo;</span></a></li>
       </ul>
     </nav>
     <nav>
       <ul class="pagination">
-        <li><a href="#"><span aria-hidden="true">&laquo;</span><span class="sr-only">Previous</span></a></li>
+        <li><a href="#" aria-label="Previous"><span aria-hidden="true">&laquo;</span></a></li>
         <li><a href="#">1</a></li>
         <li><a href="#">2</a></li>
         <li><a href="#">3</a></li>
         <li><a href="#">4</a></li>
         <li><a href="#">5</a></li>
-        <li><a href="#"><span aria-hidden="true">&raquo;</span><span class="sr-only">Next</span></a></li>
+        <li><a href="#" aria-label="Next"><span aria-hidden="true">&raquo;</span></a></li>
       </ul>
     </nav>
     <nav>
       <ul class="pagination pagination-sm">
-        <li><a href="#"><span aria-hidden="true">&laquo;</span><span class="sr-only">Previous</span></a></li>
+        <li><a href="#" aria-label="Previous"><span aria-hidden="true">&laquo;</span></a></li>
         <li><a href="#">1</a></li>
         <li><a href="#">2</a></li>
         <li><a href="#">3</a></li>
         <li><a href="#">4</a></li>
         <li><a href="#">5</a></li>
-        <li><a href="#"><span aria-hidden="true">&raquo;</span><span class="sr-only">Next</span></a></li>
+        <li><a href="#" aria-label="Next"><span aria-hidden="true">&raquo;</span></a></li>
       </ul>
     </nav>
   </div>
@@ -144,7 +139,7 @@
 
   <h3>Default example</h3>
   <p>By default, the pager centers links.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="simple-pager">
     <nav>
       <ul class="pager">
         <li><a href="#">Previous</a></li>
@@ -163,7 +158,7 @@
 
   <h3>Aligned links</h3>
   <p>Alternatively, you can align each link to the sides:</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="aligned-pager-links">
     <nav>
       <ul class="pager">
         <li class="previous"><a href="#"><span aria-hidden="true">&larr;</span> Older</a></li>
@@ -183,7 +178,7 @@
 
   <h3>Optional disabled state</h3>
   <p>Pager links also use the general <code>.disabled</code> utility class from the pagination.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="disabled-pager">
     <nav>
       <ul class="pager">
         <li class="previous disabled"><a href="#"><span aria-hidden="true">&larr;</span> Older</a></li>
diff --git a/docs/_includes/components/panels.html b/docs/_includes/components/panels.html
index 501e4ddd3..a0d4448c4 100644
--- a/docs/_includes/components/panels.html
+++ b/docs/_includes/components/panels.html
@@ -5,7 +5,7 @@
 
   <h3 id="panels-basic">Basic example</h3>
   <p>By default, all the <code>.panel</code> does is apply some basic border and padding to contain some content.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="simple-panel">
     <div class="panel panel-default">
       <div class="panel-body">
         Basic panel example
@@ -23,7 +23,7 @@
   <h3 id="panels-heading">Panel with heading</h3>
   <p>Easily add a heading container to your panel with <code>.panel-heading</code>. You may also include any <code>&lt;h1&gt;</code>-<code>&lt;h6&gt;</code> with a <code>.panel-title</code> class to add a pre-styled heading.</p>
   <p>For proper link coloring, be sure to place links in headings within <code>.panel-title</code>.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="panel-with-heading">
     <div class="panel panel-default">
       <div class="panel-heading">Panel heading without title</div>
       <div class="panel-body">
@@ -59,7 +59,7 @@
 
   <h3 id="panels-footer">Panel with footer</h3>
   <p>Wrap buttons or secondary text in <code>.panel-footer</code>. Note that panel footers <strong>do not</strong> inherit colors and borders when using contextual variations as they are not meant to be in the foreground.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="panel-with-footer">
     <div class="panel panel-default">
       <div class="panel-body">
         Panel content
@@ -78,7 +78,7 @@
 
   <h3 id="panels-alternatives">Contextual alternatives</h3>
   <p>Like other components, easily make a panel more meaningful to a particular context by adding any of the contextual state classes.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="contextual-panels">
     <div class="panel panel-primary">
       <div class="panel-heading">
         <h3 class="panel-title">Panel title</h3>
@@ -130,7 +130,7 @@
 
   <h3 id="panels-tables">With tables</h3>
   <p>Add any non-bordered <code>.table</code> within a panel for a seamless design. If there is a <code>.panel-body</code>, we add an extra border to the top of the table for separation.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="table-within-panel">
     <div class="panel panel-default">
       <!-- Default panel contents -->
       <div class="panel-heading">Panel heading</div>
@@ -187,7 +187,7 @@
 {% endhighlight %}
 
   <p>If there is no panel body, the component moves from panel header to table without interruption.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="panel-without-body-with-table">
     <div class="panel panel-default">
       <!-- Default panel contents -->
       <div class="panel-heading">Panel heading</div>
@@ -240,7 +240,7 @@
 
   <h3 id="panels-list-group">With list groups</h3>
   <p>Easily include full-width <a href="#list-group">list groups</a> within any panel.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="panel-with-list-group">
     <div class="panel panel-default">
       <!-- Default panel contents -->
       <div class="panel-heading">Panel heading</div>
diff --git a/docs/_includes/components/progress-bars.html b/docs/_includes/components/progress-bars.html
index a7132e763..68d87e090 100644
--- a/docs/_includes/components/progress-bars.html
+++ b/docs/_includes/components/progress-bars.html
@@ -10,7 +10,7 @@
 
   <h3 id="progress-basic">Basic example</h3>
   <p>Default progress bar.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="simple-progress-bar">
     <div class="progress">
       <div class="progress-bar" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width: 60%;">
         <span class="sr-only">60% Complete</span>
@@ -26,8 +26,8 @@
 {% endhighlight %}
 
   <h3 id="progress-label">With label</h3>
-  <p>Remove the <code>.sr-only</code> class from within the progress bar to show a visible percentage. For low percentages, consider adding a <code>min-width</code> to ensure the label's text is fully visible.</p>
-  <div class="bs-example">
+  <p>Remove the <code>&lt;span&gt;</code> with <code>.sr-only</code> class from within the progress bar to show a visible percentage.</p>
+  <div class="bs-example" data-example-id="progress-bar-with-label">
     <div class="progress">
       <div class="progress-bar" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width: 60%;">
         60%
@@ -41,29 +41,27 @@
   </div>
 </div>
 {% endhighlight %}
-
-  <h3 id="progress-low-percentages">Low percentages</h3>
-  <p>Progress bars representing low single digit percentages, as well as 0%, include a <code>min-width: 20px;</code> for legibility.</p>
-  <div class="bs-example">
+  <p>To ensure that the label text remains legible even for low percentages, consider adding a <code>min-width</code> to the progress bar.</p>
+  <div class="bs-example" data-example-id="progress-bar-at-low-percentage">
     <div class="progress">
-      <div class="progress-bar" role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100">
+      <div class="progress-bar" role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100" style="min-width: 2em;">
         0%
       </div>
     </div>
     <div class="progress">
-      <div class="progress-bar" role="progressbar" aria-valuenow="2" aria-valuemin="0" aria-valuemax="100" style="width: 2%;">
+      <div class="progress-bar" role="progressbar" aria-valuenow="2" aria-valuemin="0" aria-valuemax="100" style="min-width: 2em; width: 2%;">
         2%
       </div>
     </div>
   </div>
 {% highlight html %}
 <div class="progress">
-  <div class="progress-bar" role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100">
+  <div class="progress-bar" role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100" style="min-width: 2em;">
     0%
   </div>
 </div>
 <div class="progress">
-  <div class="progress-bar" role="progressbar" aria-valuenow="2" aria-valuemin="0" aria-valuemax="100" style="width: 2%;">
+  <div class="progress-bar" role="progressbar" aria-valuenow="2" aria-valuemin="0" aria-valuemax="100" style="min-width: 2em; width: 2%;">
     2%
   </div>
 </div>
@@ -72,7 +70,7 @@
 
   <h3 id="progress-alternatives">Contextual alternatives</h3>
   <p>Progress bars use some of the same button and alert classes for consistent styles.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="contextual-progress-bar">
     <div class="progress">
       <div class="progress-bar progress-bar-success" role="progressbar" aria-valuenow="40" aria-valuemin="0" aria-valuemax="100" style="width: 40%">
         <span class="sr-only">40% Complete (success)</span>
@@ -119,7 +117,7 @@
 
   <h3 id="progress-striped">Striped</h3>
   <p>Uses a gradient to create a striped effect. Not available in IE8.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="striped-progress-bar">
     <div class="progress">
       <div class="progress-bar progress-bar-success progress-bar-striped" role="progressbar" aria-valuenow="40" aria-valuemin="0" aria-valuemax="100" style="width: 40%">
         <span class="sr-only">40% Complete (success)</span>
@@ -166,7 +164,7 @@
 
   <h3 id="progress-animated">Animated</h3>
   <p>Add <code>.active</code> to <code>.progress-bar-striped</code> to animate the stripes right to left. Not available in IE9 and below.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="animated-progress-bar">
     <div class="progress">
       <div class="progress-bar progress-bar-striped" role="progressbar" aria-valuenow="45" aria-valuemin="0" aria-valuemax="100" style="width: 45%"><span class="sr-only">45% Complete</span></div>
     </div>
@@ -182,7 +180,7 @@
 
   <h3 id="progress-stacked">Stacked</h3>
   <p>Place multiple bars into the same <code>.progress</code> to stack them.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="stacked-progress-bar">
     <div class="progress">
       <div class="progress-bar progress-bar-success" style="width: 35%">
         <span class="sr-only">35% Complete (success)</span>
diff --git a/docs/_includes/components/responsive-embed.html b/docs/_includes/components/responsive-embed.html
index b9ced4c5d..bb79053ca 100644
--- a/docs/_includes/components/responsive-embed.html
+++ b/docs/_includes/components/responsive-embed.html
@@ -4,7 +4,7 @@
   <p>Allow browsers to determine video or slideshow dimensions based on the width of their containing block by creating an intrinsic ratio that will properly scale on any device.</p>
   <p>Rules are directly applied to <code>&lt;iframe&gt;</code>, <code>&lt;embed&gt;</code>, <code>&lt;video&gt;</code>, and <code>&lt;object&gt;</code> elements; optionally use an explicit descendant class <code>.embed-responsive-item</code> when you want to match the styling for other attributes.</p>
   <p><strong>Pro-Tip!</strong> You don't need to include <code>frameborder="0"</code> in your <code>&lt;iframe&gt;</code>s as we override that for you.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="responsive-embed-16by9-iframe-youtube">
     <div class="embed-responsive embed-responsive-16by9">
       <iframe class="embed-responsive-item" src="//www.youtube.com/embed/zpOULjyy-n8?rel=0" allowfullscreen></iframe>
     </div>
diff --git a/docs/_includes/components/thumbnails.html b/docs/_includes/components/thumbnails.html
index 3b6dfce43..530ae50fb 100644
--- a/docs/_includes/components/thumbnails.html
+++ b/docs/_includes/components/thumbnails.html
@@ -2,10 +2,11 @@
   <h1 id="thumbnails" class="page-header">Thumbnails</h1>
 
   <p class="lead">Extend Bootstrap's <a href="../css/#grid">grid system</a> with the thumbnail component to easily display grids of images, videos, text, and more.</p>
+  <p>If you're looking for Pinterest-like presentation of thumbnails of varying heights and/or widths, you'll need to use a third-party plugin such as <a href="http://masonry.desandro.com">Masonry</a>, <a href="http://isotope.metafizzy.co">Isotope</a>, or <a href="http://salvattore.com">Salvattore</a>.</p>
 
   <h3 id="thumbnails-default">Default example</h3>
   <p>By default, Bootstrap's thumbnails are designed to showcase linked images with minimal required markup.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="simple-thumbnails">
     <div class="row">
       <div class="col-xs-6 col-md-3">
         <a href="#" class="thumbnail">
@@ -33,7 +34,7 @@
 <div class="row">
   <div class="col-xs-6 col-md-3">
     <a href="#" class="thumbnail">
-      <img data-src="holder.js/100%x180" alt="...">
+      <img src="..." alt="...">
     </a>
   </div>
   ...
@@ -42,7 +43,7 @@
 
   <h3 id="thumbnails-custom-content">Custom content</h3>
   <p>With a bit of extra markup, it's possible to add any kind of HTML content like headings, paragraphs, or buttons into thumbnails.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="thumbnails-with-custom-content">
     <div class="row">
       <div class="col-sm-6 col-md-4">
         <div class="thumbnail">
@@ -80,7 +81,7 @@
 <div class="row">
   <div class="col-sm-6 col-md-4">
     <div class="thumbnail">
-      <img data-src="holder.js/300x300" alt="...">
+      <img src="..." alt="...">
       <div class="caption">
         <h3>Thumbnail label</h3>
         <p>...</p>
diff --git a/docs/_includes/components/wells.html b/docs/_includes/components/wells.html
index 56e5fa098..53eae2dde 100644
--- a/docs/_includes/components/wells.html
+++ b/docs/_includes/components/wells.html
@@ -3,7 +3,7 @@
 
   <h3>Default well</h3>
   <p>Use the well as a simple effect on an element to give it an inset effect.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="default-well">
     <div class="well">
       Look, I'm in a well!
     </div>
@@ -13,7 +13,7 @@
 {% endhighlight %}
   <h3>Optional classes</h3>
   <p>Control padding and rounded corners with two optional modifier classes.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="large-well">
     <div class="well well-lg">
       Look, I'm in a large well!
     </div>
@@ -22,7 +22,7 @@
 <div class="well well-lg">...</div>
 {% endhighlight %}
 
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="small-well">
     <div class="well well-sm">
       Look, I'm in a small well!
     </div>