move responsive embed to utilities docs, update the nav to dedupe things

docs/_data/nav.yml

@@ -118,9 +118,7 @@
     - title: Dropdowns
     - title: Badges
     - title: Label
-    - title: Tabs
     - title: Alerts
-    - title: Buttons
     - title: Navs
     - title: Navbar
     - title: Card
@@ -137,7 +135,6 @@
         - title: Columns
     - title: Breadcrumb
     - title: Pagination
-    - title: Alerts
     - title: Progress
     - title: List group
     - title: Modal
@@ -146,7 +143,6 @@
     - title: Popovers
     - title: Collapse
     - title: Carousel
-    - title: Responsive embed
     - title: Utilities
       sections:
         - title: Text alignment
@@ -160,6 +156,7 @@
         - title: Invisible content
         - title: Screen readers
         - title: Image replacement
+        - title: Responsive embed
 
 - title: Examples
   pages:

docs/components/responsive-embed.md

----
-layout: page
-title: Responsive embed
----
-
-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.
-
-Rules are directly applied to `<iframe>`, `<embed>`, `<video>`, and `<object>` elements; optionally use an explicit descendant class `.embed-responsive-item` when you want to match the styling for other attributes.
-
-**Pro-Tip!** You don't need to include `frameborder="0"` in your `<iframe>`s as we override that for you.
-
-{% example html %}
-<div class="embed-responsive embed-responsive-16by9">
-  <iframe class="embed-responsive-item" src="//www.youtube.com/embed/zpOULjyy-n8?rel=0" allowfullscreen></iframe>
-</div>
-{% endexample %}
-
-Aspect ratios can be customized. There are two available in Bootstrap, 16x9 and 4x3 (two of the most common for video).
-
-{% highlight html %}
-<!-- 16:9 aspect ratio -->
-<div class="embed-responsive embed-responsive-16by9">
-  <iframe class="embed-responsive-item" src="..."></iframe>
-</div>
-
-<!-- 4:3 aspect ratio -->
-<div class="embed-responsive embed-responsive-4by3">
-  <iframe class="embed-responsive-item" src="..."></iframe>
-</div>
-{% endhighlight %}

docs/components/utilities.md

@@ -221,3 +221,31 @@ Utilize the `.text-hide` class or mixin to help replace an element's text conten
   @include text-hide;
 }
 {% endhighlight %}
+
+### Responsive embeds
+
+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.
+
+Rules are directly applied to `<iframe>`, `<embed>`, `<video>`, and `<object>` elements; optionally use an explicit descendant class `.embed-responsive-item` when you want to match the styling for other attributes.
+
+**Pro-Tip!** You don't need to include `frameborder="0"` in your `<iframe>`s as we override that for you.
+
+{% example html %}
+<div class="embed-responsive embed-responsive-16by9">
+  <iframe class="embed-responsive-item" src="//www.youtube.com/embed/zpOULjyy-n8?rel=0" allowfullscreen></iframe>
+</div>
+{% endexample %}
+
+Aspect ratios can be customized. There are two available in Bootstrap, 16x9 and 4x3 (two of the most common for video).
+
+{% highlight html %}
+<!-- 16:9 aspect ratio -->
+<div class="embed-responsive embed-responsive-16by9">
+  <iframe class="embed-responsive-item" src="..."></iframe>
+</div>
+
+<!-- 4:3 aspect ratio -->
+<div class="embed-responsive embed-responsive-4by3">
+  <iframe class="embed-responsive-item" src="..."></iframe>
+</div>
+{% endhighlight %}