Merge branch 'v4' of https://github.com/twbs/derpstrap into v4

1 files changed, 16 insertions, 13 deletions

diff --git a/docs/components/carousel.md b/docs/components/carousel.md
index 36b302579..138358f37 100644
--- a/docs/components/carousel.md
+++ b/docs/components/carousel.md
@@ -36,21 +36,23 @@ A slideshow component for cycling through elements—images or slides of text—
 </div>
 {% endexample %}
 
-<div class="bs-callout bs-callout-warning" id="callout-carousel-transitions">
-  <h4>Transition animations not supported in Internet Explorer 9</h4>
-  <p>Bootstrap exclusively uses CSS3 for its animations, but Internet Explorer 9 doesn't support the necessary CSS properties. Thus, there are no slide transition animations when using that browser. We have intentionally decided not to include jQuery-based fallbacks for the transitions.</p>
-</div>
+{% callout warning %}
+#### Transition animations not supported in Internet Explorer 9
 
-<div class="bs-callout bs-callout-warning" id="callout-carousel-active">
-  <h4>Initial active element required</h4>
-  <p>The <code>.active</code> class needs to be added to one of the slides. Otherwise, the carousel will not be visible.</p>
-</div>
+Bootstrap exclusively uses CSS3 for its animations, but Internet Explorer 9 doesn't support the necessary CSS properties. Thus, there are no slide transition animations when using that browser. We have intentionally decided not to include jQuery-based fallbacks for the transitions.
+{% endcallout %}
+
+{% callout warning %}
+#### Initial active element required
+
+The `.active` class needs to be added to one of the slides. Otherwise, the carousel will not be visible.
+{% endcallout %}
 
 ### Optional captions
 
 Add captions to your slides easily with the `.carousel-caption` element within any `.carousel-item`. Place just about any optional HTML within there and it will be automatically aligned and formatted.
 
-<div class="bs-example">
+<div class="bd-example">
   <div id="carousel-example-captions" class="carousel slide" data-ride="carousel">
     <ol class="carousel-indicators">
       <li data-target="#carousel-example-captions" data-slide-to="0" class="active"></li>
@@ -101,10 +103,11 @@ Add captions to your slides easily with the `.carousel-caption` element within a
 </div>
 {% endhighlight %}
 
-<div class="bs-callout bs-callout-danger">
-  <h4>Accessibility issue</h4>
-  <p>The carousel component is generally not compliant with accessibility standards. If you need to be compliant, please consider other options for presenting your content.</p>
-</div>
+{% callout danger %}
+#### Accessibility issue
+
+The carousel component is generally not compliant with accessibility standards. If you need to be compliant, please consider other options for presenting your content.
+{% endcallout %}
 
 ## Usage