Merge branch 'v4-docs-streamlined' of https://github.com/twbs/bootstrap into v4-docs-streamlined

5 files changed, 146 insertions, 166 deletions

diff --git a/docs/content/figures.md b/docs/content/figures.md
index b85ca8a4a..4f90018c9 100644
--- a/docs/content/figures.md
+++ b/docs/content/figures.md
@@ -21,6 +21,6 @@ Aligning the figure's caption is easy with our [text utilities]({{ site.baseurl
 {% example html %}
 <figure class="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 text-xs-right">A caption for the above image.</figcaption>
+  <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 da342b546..fc8cda6b4 100644
--- a/docs/content/images.md
+++ b/docs/content/images.md
@@ -47,13 +47,13 @@ In addition to our [border-radius utilities]({{ site.baseurl }}/utilities/border
 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="rounded float-xs-left" alt="A generic square placeholder image with rounded corners">
-  <img data-src="holder.js/200x200" class="rounded float-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="rounded float-xs-left" alt="...">
-<img src="..." class="rounded float-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">
@@ -65,13 +65,13 @@ Align images with the [helper float classes]({{ site.baseurl }}/utilities/respon
 {% endhighlight %}
 
 <div class="bd-example bd-example-images">
-  <div class="text-xs-center">
+  <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">
+<div class="text-center">
   <img src="..." class="rounded" alt="...">
 </div>
 {% endhighlight %}
diff --git a/docs/content/reboot.md b/docs/content/reboot.md
index 5cb4be175..08ad15a6a 100644
--- a/docs/content/reboot.md
+++ b/docs/content/reboot.md
@@ -41,7 +41,9 @@ 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",
@@ -309,7 +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>
diff --git a/docs/content/tables.md b/docs/content/tables.md
index 0e40c0ef7..da847611f 100644
--- a/docs/content/tables.md
+++ b/docs/content/tables.md
@@ -442,52 +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">
@@ -670,7 +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
@@ -678,118 +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 ae1378422..073734768 100644
--- a/docs/content/typography.md
+++ b/docs/content/typography.md
@@ -5,7 +5,7 @@ description: Documentation and examples for Bootstrap typography, including glob
 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 }}/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
 
@@ -154,7 +154,7 @@ Change text alignment, transform, style, weight, and color with our [text utilit
 
 ## 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.