Merge branch 'twbs/v4-dev' into dropdown-keyboard

6 files changed, 178 insertions, 204 deletions

diff --git a/docs/content/code.md b/docs/content/code.md
index 79059a1d1..a62e0845f 100644
--- a/docs/content/code.md
+++ b/docs/content/code.md
@@ -1,6 +1,7 @@
 ---
 layout: docs
 title: Code
+description: Documentation and examples for displaying inline and multiline blocks of code with Bootstrap.
 group: content
 ---
 
diff --git a/docs/content/figures.md b/docs/content/figures.md
index d57270518..4f90018c9 100644
--- a/docs/content/figures.md
+++ b/docs/content/figures.md
@@ -1,25 +1,26 @@
 ---
 layout: docs
 title: Figures
+description: Documentation and examples for displaying related images and text with the figure component in Bootstrap.
 group: content
 ---
 
-Anytime you need to display a piece of content—like an image—with an optional caption, consider using a `<figure>`.
+Anytime you need to display a piece of content—like an image with an optional caption, consider using a `<figure>`.
 
 Use the included `.figure` , `.figure-img` and `.figure-caption` classes to provide some baseline styles for the HTML5 `<figure>` and `<figcaption>` elements. Images in figures have no explicit size, so be sure to add the `.img-fluid` class to your `<img>` to make it responsive.
 
 {% example html %}
 <figure class="figure">
-  <img data-src="holder.js/400x300" class="figure-img img-fluid img-rounded" alt="A generic square placeholder image with rounded corners in a figure.">
+  <img data-src="holder.js/400x300" class="figure-img img-fluid rounded" alt="A generic square placeholder image with rounded corners in a figure.">
   <figcaption class="figure-caption">A caption for the above image.</figcaption>
 </figure>
 {% endexample %}
 
-Aligning the figure's caption is easy with our [text utilities]({{ site.baseurl }}/components/utilities/#text-alignment).
+Aligning the figure's caption is easy with our [text utilities]({{ site.baseurl }}/utilities/typography/#text-alignment).
 
 {% example html %}
 <figure class="figure">
-  <img data-src="holder.js/400x300" class="figure-img img-fluid img-rounded" alt="A generic square placeholder image with rounded corners in a figure.">
-  <figcaption class="figure-caption text-xs-right">A caption for the above image.</figcaption>
+  <img data-src="holder.js/400x300" class="figure-img img-fluid rounded" alt="A generic square placeholder image with rounded corners in a figure.">
+  <figcaption class="figure-caption text-right">A caption for the above image.</figcaption>
 </figure>
 {% endexample %}
diff --git a/docs/content/images.md b/docs/content/images.md
index f21010f0f..fc8cda6b4 100644
--- a/docs/content/images.md
+++ b/docs/content/images.md
@@ -1,6 +1,7 @@
 ---
 layout: docs
 title: Images
+description: Documentation and examples for styling images with Bootstrap.
 group: content
 ---
 
@@ -29,52 +30,48 @@ Images in Bootstrap are made responsive with `.img-fluid`. `max-width: 100%;` an
 In Internet Explorer 9-10, SVG images with `.img-fluid` are disproportionately sized. To fix this, add `width: 100% \9;` where necessary. This fix improperly sizes other image formats, so Bootstrap doesn't apply it automatically.
 {% endcallout %}
 
-## Image shapes
+## Image thumbnails
 
-Add classes to an `<img>` element to easily style images in any project.
+In addition to our [border-radius utilities]({{ site.baseurl }}/utilities/borders/), you can use `.img-thumbnail` to give an image a rounded 1px border appearance.
 
 <div class="bd-example bd-example-images">
-  <img data-src="holder.js/200x200" class="img-rounded" alt="A generic square placeholder image with rounded corners">
-  <img data-src="holder.js/200x200" class="img-circle" alt="A generic square placeholder image where only the portion within the circle circumscribed about said square is visible">
   <img data-src="holder.js/200x200" class="img-thumbnail" alt="A generic square placeholder image with a white border around it, making it resemble a photograph taken with an old instant camera">
 </div>
 
 {% highlight html %}
-<img src="..." alt="..." class="img-rounded">
-<img src="..." alt="..." class="img-circle">
 <img src="..." alt="..." class="img-thumbnail">
 {% endhighlight %}
 
 ## Aligning images
 
-Align images with the [helper float classes]({{ site.baseurl }}/components/utilities/#responsive-floats) or [text alignment classes]({{ site.baseurl }}/components/utilities/#text-alignment). `block`-level images can be centered using [the `.m-x-auto` margin utility class]({{ site.baseurl }}/components/utilities/#horizontal-centering).
+Align images with the [helper float classes]({{ site.baseurl }}/utilities/responsive-helpers/#responsive-floats) or [text alignment classes]({{ site.baseurl }}/utilities/typography/#text-alignment). `block`-level images can be centered using [the `.mx-auto` margin utility class]({{ site.baseurl }}/utilities/spacing/#horizontal-centering).
 
 <div class="bd-example bd-example-images">
-  <img data-src="holder.js/200x200" class="img-rounded pull-xs-left" alt="A generic square placeholder image with rounded corners">
-  <img data-src="holder.js/200x200" class="img-rounded pull-xs-right" alt="A generic square placeholder image with rounded corners">
+  <img data-src="holder.js/200x200" class="rounded float-left" alt="A generic square placeholder image with rounded corners">
+  <img data-src="holder.js/200x200" class="rounded float-right" alt="A generic square placeholder image with rounded corners">
 </div>
 
 {% highlight html %}
-<img src="..." class="img-rounded pull-xs-left" alt="...">
-<img src="..." class="img-rounded pull-xs-right" alt="...">
+<img src="..." class="rounded float-left" alt="...">
+<img src="..." class="rounded float-right" alt="...">
 {% endhighlight %}
 
 <div class="bd-example bd-example-images">
-  <img data-src="holder.js/200x200" class="img-rounded m-x-auto d-block" alt="A generic square placeholder image with rounded corners">
+  <img data-src="holder.js/200x200" class="rounded mx-auto d-block" alt="A generic square placeholder image with rounded corners">
 </div>
 
 {% highlight html %}
-<img src="..." class="img-rounded m-x-auto d-block" alt="...">
+<img src="..." class="rounded mx-auto d-block" alt="...">
 {% endhighlight %}
 
 <div class="bd-example bd-example-images">
-  <div class="text-xs-center">
-    <img data-src="holder.js/200x200" class="img-rounded" alt="A generic square placeholder image with rounded corners">
+  <div class="text-center">
+    <img data-src="holder.js/200x200" class="rounded" alt="A generic square placeholder image with rounded corners">
   </div>
 </div>
 
 {% highlight html %}
-<div class="text-xs-center">
-  <img src="..." class="img-rounded" alt="...">
+<div class="text-center">
+  <img src="..." class="rounded" alt="...">
 </div>
 {% endhighlight %}
diff --git a/docs/content/reboot.md b/docs/content/reboot.md
index ad8a8a6f6..08ad15a6a 100644
--- a/docs/content/reboot.md
+++ b/docs/content/reboot.md
@@ -1,6 +1,7 @@
 ---
 layout: docs
 title: Reboot
+description: Documentation and examples for Reboot, Bootstrap's collection of element-specific CSS that builds on Normalize.css.
 group: content
 redirect_from: "/content/"
 ---
@@ -40,20 +41,14 @@ The default web fonts (Helvetica Neue, Helvetica, and Arial) have been dropped i
 $font-family-sans-serif:
   // Safari for OS X and iOS (San Francisco)
   -apple-system,
-  // Chrome for OS X (San Francisco)
+  // Chrome >= 56 for OS X (San Francisco), Windows, Linux and Android
+  system-ui,
+  // Chrome < 56 for OS X (San Francisco)
   BlinkMacSystemFont,
   // Windows
   "Segoe UI",
   // Android
   "Roboto",
-  // Linux
-  "Oxygen", // KDE
-  "Ubuntu",
-  "Cantarell", // GNOME
-  // Firefox OS [R.I.P.]
-  "Fira Sans",
-  // Older Android
-  "Droid Sans",
   // Basic web fallback
   "Helvetica Neue", Arial, sans-serif !default;
 {% endhighlight %}
@@ -316,7 +311,7 @@ The `<abbr>` element receives basic styling to make it stand out amongst paragra
 
 ## HTML5 `[hidden]` attribute
 
-HTML5 adds [a new global attribute named `[hidden]`](https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/hidden), which is styled as `display: none` by default. Borrowing an idea from [PureCSS](http://purecss.io), we improve upon this default by making `[hidden] { display: none !important; }` to help prevent its `display` from getting accidentally overridden. While `[hidden]` isn't natively supported by IE9-10, the explicit declaration in our CSS gets around that problem.
+HTML5 adds [a new global attribute named `[hidden]`](https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/hidden), which is styled as `display: none` by default. Borrowing an idea from [PureCSS](http://purecss.io), we improve upon this default by making `[hidden] { display: none !important; }` to help prevent its `display` from getting accidentally overridden. While `[hidden]` isn't natively supported by IE10, the explicit declaration in our CSS gets around that problem.
 
 {% highlight html %}
 <input type="text" hidden>
@@ -328,7 +323,7 @@ HTML5 adds [a new global attribute named `[hidden]`](https://developer.mozilla.o
 `[hidden]` is not compatible with jQuery's `$(...).hide()` and `$(...).show()` methods. This could potentially change in jQuery 3, but we're not holding our breath. Therefore, we don't currently especially endorse `[hidden]` over other techniques for managing the `display` of elements.
 {% endcallout %}
 
-To merely toggle the visibility of an element, meaning its `display` is not modified and the element can still affect the flow of the document, use [the `.invisible` class]({{ site.baseurl }}/components/utilities/#invisible-content) instead.
+To merely toggle the visibility of an element, meaning its `display` is not modified and the element can still affect the flow of the document, use [the `.invisible` class]({{ site.baseurl }}/utilities/invisible-content/) instead.
 
 ## Click delay optimization for touch
 
@@ -342,4 +337,4 @@ To address this problem in IE11 and Microsoft Edge on desktop, as well as IE11 o
 
 In the case of old iOS versions (prior to 9.3), the suggested approach is to use additional scripts such as [FastClick](https://github.com/ftlabs/fastclick) to explicitly work around the delay.
 
-For further details, see the compatibility table for [suppressing 300ms delay for touchscreen interactions](http://patrickhlauke.github.io/touch/tests/results/#suppressing-300ms-delay).
+For further details, see the compatibility table for [suppressing 300ms delay for touchscreen interactions](https://patrickhlauke.github.io/touch/tests/results/#suppressing-300ms-delay).
diff --git a/docs/content/tables.md b/docs/content/tables.md
index 3b4d58b36..da847611f 100644
--- a/docs/content/tables.md
+++ b/docs/content/tables.md
@@ -1,6 +1,7 @@
 ---
 layout: docs
 title: Tables
+description: Documentation and examples for styling tables with Bootstrap.
 group: content
 ---
 
@@ -13,7 +14,7 @@ Due to the widespread use of tables across third-party widgets like calendars an
 
 ## Examples
 
-Using the most basic table markup, here's how `.table`-based tables look in Bootstrap.
+Using the most basic table markup, here's how `.table`-based tables look in Bootstrap. **All table styles are inherited in Bootstrap 4**, meaning any nested tables will be styled in the same manner as the parent.
 
 {% example html %}
 <table class="table">
@@ -441,52 +442,50 @@ Add `.table-sm` to make tables more compact by cutting cell padding in half.
 
 Use contextual classes to color table rows or individual cells.
 
-<div class="table-responsive">
-  <table class="table table-bordered table-striped">
-    <colgroup>
-      <col class="col-xs-1">
-      <col class="col-xs-7">
-    </colgroup>
-    <thead>
-      <tr>
-        <th>Class</th>
-        <th>Description</th>
-      </tr>
-    </thead>
-    <tbody>
-      <tr>
-        <th scope="row">
-          <code>.table-active</code>
-        </th>
-        <td>Applies the hover color to a particular row or cell</td>
-      </tr>
-      <tr>
-        <th scope="row">
-          <code>.table-success</code>
-        </th>
-        <td>Indicates a successful or positive action</td>
-      </tr>
-      <tr>
-        <th scope="row">
-          <code>.table-info</code>
-        </th>
-        <td>Indicates a neutral informative change or action</td>
-      </tr>
-      <tr>
-        <th scope="row">
-          <code>.table-warning</code>
-        </th>
-        <td>Indicates a warning that might need attention</td>
-      </tr>
-      <tr>
-        <th scope="row">
-          <code>.table-danger</code>
-        </th>
-        <td>Indicates a dangerous or potentially negative action</td>
-      </tr>
-    </tbody>
-  </table>
-</div>
+<table class="table table-bordered table-striped table-responsive">
+  <colgroup>
+    <col class="col-1">
+    <col class="col-7">
+  </colgroup>
+  <thead>
+    <tr>
+      <th>Class</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th scope="row">
+        <code>.table-active</code>
+      </th>
+      <td>Applies the hover color to a particular row or cell</td>
+    </tr>
+    <tr>
+      <th scope="row">
+        <code>.table-success</code>
+      </th>
+      <td>Indicates a successful or positive action</td>
+    </tr>
+    <tr>
+      <th scope="row">
+        <code>.table-info</code>
+      </th>
+      <td>Indicates a neutral informative change or action</td>
+    </tr>
+    <tr>
+      <th scope="row">
+        <code>.table-warning</code>
+      </th>
+      <td>Indicates a warning that might need attention</td>
+    </tr>
+    <tr>
+      <th scope="row">
+        <code>.table-danger</code>
+      </th>
+      <td>Indicates a dangerous or potentially negative action</td>
+    </tr>
+  </tbody>
+</table>
 
 <div class="bd-example">
   <table class="table">
@@ -575,7 +574,7 @@ Use contextual classes to color table rows or individual cells.
 </tr>
 {% endhighlight %}
 
-Regular table background variants are not available with the inverse table, however, you may use [text or background utilities](/components/utilities/#contextual-colors-and-backgrounds) to achieve similar styles.
+Regular table background variants are not available with the inverse table, however, you may use [text or background utilities]({{ site.baseurl }}/utilities/colors/) to achieve similar styles.
 
 <div class="bd-example">
   <table class="table table-inverse">
@@ -669,7 +668,7 @@ Regular table background variants are not available with the inverse table, howe
 
 ## Responsive tables
 
-Create responsive tables by wrapping any `.table` in `.table-responsive` to make them scroll horizontally on small devices (under 768px). When viewing on anything larger than 768px wide, you will not see any difference in these tables.
+Create responsive tables by adding `.table-responsive` to any `.table` to make them scroll horizontally on small devices (under 768px). When viewing on anything larger than 768px wide, you will not see any difference in these tables.
 
 {% callout warning %}
 #### Vertical clipping/truncation
@@ -677,118 +676,98 @@ Create responsive tables by wrapping any `.table` in `.table-responsive` to make
 Responsive tables make use of `overflow-y: hidden`, which clips off any content that goes beyond the bottom or top edges of the table. In particular, this can clip off dropdown menus and other third-party widgets.
 {% endcallout %}
 
-{% callout warning %}
-#### Firefox and fieldsets
-
-Firefox has some awkward fieldset styling involving `width` that interferes with the responsive table. This cannot be overridden without a Firefox-specific hack that we **don't** provide in Bootstrap:
-
-{% highlight css %}
-@-moz-document url-prefix() {
-  fieldset { display: table-cell; }
-}
-{% endhighlight %}
-
-For more information, read [this Stack Overflow answer](https://stackoverflow.com/questions/17408815/fieldset-resizes-wrong-appears-to-have-unremovable-min-width-min-content/17863685#17863685).
-{% endcallout %}
-
 <div class="bd-example">
-  <div class="table-responsive">
-    <table class="table">
-      <thead>
-        <tr>
-          <th>#</th>
-          <th>Table heading</th>
-          <th>Table heading</th>
-          <th>Table heading</th>
-          <th>Table heading</th>
-          <th>Table heading</th>
-          <th>Table heading</th>
-        </tr>
-      </thead>
-      <tbody>
-        <tr>
-          <th scope="row">1</th>
-          <td>Table cell</td>
-          <td>Table cell</td>
-          <td>Table cell</td>
-          <td>Table cell</td>
-          <td>Table cell</td>
-          <td>Table cell</td>
-        </tr>
-        <tr>
-          <th scope="row">2</th>
-          <td>Table cell</td>
-          <td>Table cell</td>
-          <td>Table cell</td>
-          <td>Table cell</td>
-          <td>Table cell</td>
-          <td>Table cell</td>
-        </tr>
-        <tr>
-          <th scope="row">3</th>
-          <td>Table cell</td>
-          <td>Table cell</td>
-          <td>Table cell</td>
-          <td>Table cell</td>
-          <td>Table cell</td>
-          <td>Table cell</td>
-        </tr>
-      </tbody>
-    </table>
-  </div>
-
-  <div class="table-responsive">
-    <table class="table table-bordered">
-      <thead>
-        <tr>
-          <th>#</th>
-          <th>Table heading</th>
-          <th>Table heading</th>
-          <th>Table heading</th>
-          <th>Table heading</th>
-          <th>Table heading</th>
-          <th>Table heading</th>
-        </tr>
-      </thead>
-      <tbody>
-        <tr>
-          <th scope="row">1</th>
-          <td>Table cell</td>
-          <td>Table cell</td>
-          <td>Table cell</td>
-          <td>Table cell</td>
-          <td>Table cell</td>
-          <td>Table cell</td>
-        </tr>
-        <tr>
-          <th scope="row">2</th>
-          <td>Table cell</td>
-          <td>Table cell</td>
-          <td>Table cell</td>
-          <td>Table cell</td>
-          <td>Table cell</td>
-          <td>Table cell</td>
-        </tr>
-        <tr>
-          <th scope="row">3</th>
-          <td>Table cell</td>
-          <td>Table cell</td>
-          <td>Table cell</td>
-          <td>Table cell</td>
-          <td>Table cell</td>
-          <td>Table cell</td>
-        </tr>
-      </tbody>
-    </table>
-  </div>
-</div>
+  <table class="table table-responsive">
+    <thead>
+      <tr>
+        <th>#</th>
+        <th>Table heading</th>
+        <th>Table heading</th>
+        <th>Table heading</th>
+        <th>Table heading</th>
+        <th>Table heading</th>
+        <th>Table heading</th>
+      </tr>
+    </thead>
+    <tbody>
+      <tr>
+        <th scope="row">1</th>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+      </tr>
+      <tr>
+        <th scope="row">2</th>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+      </tr>
+      <tr>
+        <th scope="row">3</th>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+      </tr>
+    </tbody>
+  </table>
 
-{% highlight html %}
-<div class="table-responsive">
-  <table class="table">
-    ...
+  <table class="table table-bordered table-responsive">
+    <thead>
+      <tr>
+        <th>#</th>
+        <th>Table heading</th>
+        <th>Table heading</th>
+        <th>Table heading</th>
+        <th>Table heading</th>
+        <th>Table heading</th>
+        <th>Table heading</th>
+      </tr>
+    </thead>
+    <tbody>
+      <tr>
+        <th scope="row">1</th>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+      </tr>
+      <tr>
+        <th scope="row">2</th>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+      </tr>
+      <tr>
+        <th scope="row">3</th>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+        <td>Table cell</td>
+      </tr>
+    </tbody>
   </table>
 </div>
+
+{% highlight html %}
+<table class="table table-responsive"">
+  ...
+</table>
 {% endhighlight %}
 
 
diff --git a/docs/content/typography.md b/docs/content/typography.md
index 139a7e00e..073734768 100644
--- a/docs/content/typography.md
+++ b/docs/content/typography.md
@@ -1,10 +1,11 @@
 ---
 layout: docs
 title: Typography
+description: Documentation and examples for Bootstrap typography, including global settings, body text, lists, and more.
 group: content
 ---
 
-Bootstrap includes simple and easily customized typography for headings, body text, lists, and more. For even more control, check out the [textual utility classes]({{ site.baseurl }}/components/utilities/).
+Bootstrap includes simple and easily customized typography for headings, body text, lists, and more. For even more control, check out the [textual utility classes]({{ site.baseurl }}/utilities/typography).
 
 ## Contents
 
@@ -15,7 +16,7 @@ Bootstrap includes simple and easily customized typography for headings, body te
 
 Bootstrap sets basic global display, typography, and link styles. Specifically, we:
 
-- Use a [native font stack](/content/reboot/#native-font-stack) that selects the best `font-family` for each OS and device.
+- Use a [native font stack]({{ site.baseurl }}/content/reboot/#native-font-stack) that selects the best `font-family` for each OS and device.
 - Use the `$font-family-base`, `$font-size-base`, and `$line-height-base` attributes as our typographic base applied to the `<body>`.
 - Set the global link color via `$link-color` and apply link underlines only on `:hover`.
 - Use `$body-bg` to set a `background-color` on the `<body>` (`#fff` by default).
@@ -31,27 +32,27 @@ All HTML headings, `<h1>` through `<h6>`, are available.
     <tbody>
       <tr>
         <td><h1>h1. Bootstrap heading</h1></td>
-        <td class="type-info">Semibold 36px</td>
+        <td class="type-info">Semibold 2.5rem (40px)</td>
       </tr>
       <tr>
         <td><h2>h2. Bootstrap heading</h2></td>
-        <td class="type-info">Semibold 30px</td>
+        <td class="type-info">Semibold 2rem (32px)</td>
       </tr>
       <tr>
         <td><h3>h3. Bootstrap heading</h3></td>
-        <td class="type-info">Semibold 24px</td>
+        <td class="type-info">Semibold 1.75rem (28px)</td>
       </tr>
       <tr>
         <td><h4>h4. Bootstrap heading</h4></td>
-        <td class="type-info">Semibold 18px</td>
+        <td class="type-info">Semibold 1.5rem (24px)</td>
       </tr>
       <tr>
         <td><h5>h5. Bootstrap heading</h5></td>
-        <td class="type-info">Semibold 14px</td>
+        <td class="type-info">Semibold 1.25rem (20px)</td>
       </tr>
       <tr>
         <td><h6>h6. Bootstrap heading</h6></td>
-        <td class="type-info">Semibold 12px</td>
+        <td class="type-info">Semibold 1rem (16px)</td>
       </tr>
     </tbody>
   </table>
@@ -149,11 +150,11 @@ While not shown above, feel free to use `<b>` and `<i>` in HTML5. `<b>` is meant
 
 ## Text utilities
 
-Change text alignment, transform, style, weight, and color with our [text utilities]({{ site.baseurl }}/components/utilities/#text-alignment).
+Change text alignment, transform, style, weight, and color with our [text utilities]({{ site.baseurl }}/utilities/typography/#text-alignment).
 
 ## Abbreviations
 
-Stylized implementation of HTML's `<abbr>` element for abbreviations and acronyms to show the expanded version on hover. Abbreviations with a `title` attribute have a light dotted bottom border and a help cursor on hover, providing additional context on hover and to users of assistive technologies.
+Stylized implementation of HTML's `<abbr>` element for abbreviations and acronyms to show the expanded version on hover. Abbreviations have a default underline from Normalize.css and gain a help cursor to provide additional context on hover and to users of assistive technologies.
 
 Add `.initialism` to an abbreviation for a slightly smaller font-size.
 
@@ -168,7 +169,7 @@ For quoting blocks of content from another source within your document. Wrap `<b
 
 {% example html %}
 <blockquote class="blockquote">
-  <p class="m-b-0">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
+  <p class="mb-0">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
 </blockquote>
 {% endexample %}
 
@@ -178,7 +179,7 @@ Add a `<footer class="blockquote-footer">` for identifying the source. Wrap the
 
 {% example html %}
 <blockquote class="blockquote">
-  <p class="m-b-0">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
+  <p class="mb-0">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
   <footer class="blockquote-footer">Someone famous in <cite title="Source Title">Source Title</cite></footer>
 </blockquote>
 {% endexample %}
@@ -189,7 +190,7 @@ Add `.blockquote-reverse` for a blockquote with right-aligned content.
 
 {% example html %}
 <blockquote class="blockquote blockquote-reverse">
-  <p class="m-b-0">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
+  <p class="mb-0">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
   <footer class="blockquote-footer">Someone famous in <cite title="Source Title">Source Title</cite></footer>
 </blockquote>
 {% endexample %}