diff --git a/docs/4.0/components/input-group.md b/docs/4.0/components/input-group.md
index 011a1edc7..27995d409 100644
--- a/docs/4.0/components/input-group.md
+++ b/docs/4.0/components/input-group.md
@@ -6,8 +6,6 @@ group: components
 toc: true
 ---
 
-
-
 ## Basic example
 
 Place one add-on or button on either side of an input. You may also place one on both sides of an input. **We do not support multiple form-controls in a single input group** and `<label>`s must come outside the input group.
diff --git a/docs/4.0/components/popovers.md b/docs/4.0/components/popovers.md
index 31ff5c61f..9f0472e3e 100644
--- a/docs/4.0/components/popovers.md
+++ b/docs/4.0/components/popovers.md
@@ -10,7 +10,6 @@ toc: true
 
 Things to know when using the popover plugin:
 
-
 - Popovers rely on the 3rd party library [Popper.js](https://popper.js.org/) for positioning. You must include [popper.min.js]({{ site.cdn.popper }}) before bootstrap.js or use `bootstrap.bundle.min.js` / `bootstrap.bundle.js` which contains Popper.js in order for popovers to work!
 - Popovers require the [tooltip plugin]({{ site.baseurl }}/docs/{{ site.docs_version }}/components/tooltips/) as a dependency.
 - If you're building our JavaScript from source, it [requires `util.js`]({{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/javascript/#util).
diff --git a/docs/4.0/examples/blog/blog.css b/docs/4.0/examples/blog/blog.css
index e4381fec6..ae397f561 100644
--- a/docs/4.0/examples/blog/blog.css
+++ b/docs/4.0/examples/blog/blog.css
@@ -1,7 +1,6 @@
 /*
  * Globals
  */
-
 @media (min-width: 48em) {
   html {
     font-size: 18px;
@@ -30,20 +29,16 @@ h6,
   color: #333;
 }
 
-
 /*
  * Override Bootstrap's default container.
  */
-
 .container {
   max-width: 60rem;
 }
 
-
 /*
  * Masthead for nav
  */
-
 .blog-masthead {
   margin-bottom: 3rem;
   background-color: #428bca;
@@ -81,11 +76,9 @@ h6,
   border-left: .3rem solid transparent;
 }
 
-
 /*
  * Blog name and description
  */
-
 .blog-header {
   padding-bottom: 1.25rem;
   margin-bottom: 2rem;
@@ -107,7 +100,6 @@ h6,
   }
 }
 
-
 /*
  * Main column and sidebar layout
  */
@@ -127,7 +119,6 @@ h6,
   margin-bottom: 0;
 }
 
-
 /* Pagination */
 .blog-pagination {
   margin-bottom: 4rem;
@@ -136,11 +127,9 @@ h6,
   border-radius: 2rem;
 }
 
-
 /*
  * Blog posts
  */
-
 .blog-post {
   margin-bottom: 4rem;
 }
@@ -153,11 +142,9 @@ h6,
   color: #999;
 }
 
-
 /*
  * Footer
  */
-
 .blog-footer {
   padding: 2.5rem 0;
   color: #999;
diff --git a/docs/4.0/examples/blog/index.html b/docs/4.0/examples/blog/index.html
index 2257cef95..dbc919e03 100644
--- a/docs/4.0/examples/blog/index.html
+++ b/docs/4.0/examples/blog/index.html
@@ -154,7 +154,6 @@
       </p>
     </footer>
 
-
     <!-- Bootstrap core JavaScript
     ================================================== -->
     <!-- Placed at the end of the document so the pages load faster -->
diff --git a/docs/4.0/examples/carousel/index.html b/docs/4.0/examples/carousel/index.html
index 32bc81e5c..48ad622d8 100644
--- a/docs/4.0/examples/carousel/index.html
+++ b/docs/4.0/examples/carousel/index.html
@@ -173,10 +173,8 @@
         <p class="float-right"><a href="#">Back to top</a></p>
         <p>&copy; 2017 Company, Inc. &middot; <a href="#">Privacy</a> &middot; <a href="#">Terms</a></p>
       </footer>
-
     </main>
 
-
     <!-- Bootstrap core JavaScript
     ================================================== -->
     <!-- Placed at the end of the document so the pages load faster -->
diff --git a/docs/4.0/examples/cover/cover.css b/docs/4.0/examples/cover/cover.css
index 96a89740b..1783756e7 100644
--- a/docs/4.0/examples/cover/cover.css
+++ b/docs/4.0/examples/cover/cover.css
@@ -23,7 +23,6 @@ a:hover {
 /*
  * Base structure
  */
-
 html,
 body {
   height: 100%;
@@ -61,7 +60,6 @@ body {
 /*
  * Header
  */
-
 .masthead {
   margin-bottom: 2rem;
 }
@@ -105,7 +103,6 @@ body {
 /*
  * Cover
  */
-
 .cover {
   padding: 0 1.5rem;
 }
@@ -118,7 +115,6 @@ body {
 /*
  * Footer
  */
-
 .mastfoot {
   color: rgba(255, 255, 255, .5);
 }
@@ -127,7 +123,6 @@ body {
 /*
  * Affix and center
  */
-
 @media (min-width: 40em) {
   /* Pull out the header and footer */
   .masthead {
diff --git a/docs/4.0/examples/justified-nav/index.html b/docs/4.0/examples/justified-nav/index.html
index 495332195..5667232e2 100644
--- a/docs/4.0/examples/justified-nav/index.html
+++ b/docs/4.0/examples/justified-nav/index.html
@@ -94,7 +94,6 @@
 
     </div> <!-- /container -->
 
-
     <!-- Bootstrap core JavaScript
     ================================================== -->
     <!-- Placed at the end of the document so the pages load faster -->
diff --git a/docs/4.0/examples/navbar-top-fixed/index.html b/docs/4.0/examples/navbar-top-fixed/index.html
index 54e56fc48..673d61e04 100644
--- a/docs/4.0/examples/navbar-top-fixed/index.html
+++ b/docs/4.0/examples/navbar-top-fixed/index.html
@@ -50,7 +50,6 @@
       </div>
     </main>
 
-
     <!-- Bootstrap core JavaScript
     ================================================== -->
     <!-- Placed at the end of the document so the pages load faster -->
diff --git a/docs/4.0/examples/navbar-top/index.html b/docs/4.0/examples/navbar-top/index.html
index 3aeb45a8a..7efb5c91c 100644
--- a/docs/4.0/examples/navbar-top/index.html
+++ b/docs/4.0/examples/navbar-top/index.html
@@ -50,7 +50,6 @@
       </div>
     </main>
 
-
     <!-- Bootstrap core JavaScript
     ================================================== -->
     <!-- Placed at the end of the document so the pages load faster -->
diff --git a/docs/4.0/examples/navbars/index.html b/docs/4.0/examples/navbars/index.html
index 297b8912f..9716b0fa7 100644
--- a/docs/4.0/examples/navbars/index.html
+++ b/docs/4.0/examples/navbars/index.html
@@ -336,7 +336,6 @@
       </main>
     </div>
 
-
     <!-- Bootstrap core JavaScript
     ================================================== -->
     <!-- Placed at the end of the document so the pages load faster -->
diff --git a/docs/4.0/examples/offcanvas/index.html b/docs/4.0/examples/offcanvas/index.html
index c3ba9694c..38351859f 100644
--- a/docs/4.0/examples/offcanvas/index.html
+++ b/docs/4.0/examples/offcanvas/index.html
@@ -121,7 +121,6 @@
       <p>&copy; Company 2017</p>
     </footer>
 
-
     <!-- Bootstrap core JavaScript
     ================================================== -->
     <!-- Placed at the end of the document so the pages load faster -->
diff --git a/docs/4.0/examples/starter-template/index.html b/docs/4.0/examples/starter-template/index.html
index 660f521fa..410e47206 100644
--- a/docs/4.0/examples/starter-template/index.html
+++ b/docs/4.0/examples/starter-template/index.html
@@ -60,7 +60,6 @@
 
     </main><!-- /.container -->
 
-
     <!-- Bootstrap core JavaScript
     ================================================== -->
     <!-- Placed at the end of the document so the pages load faster -->
diff --git a/docs/4.0/examples/sticky-footer-navbar/index.html b/docs/4.0/examples/sticky-footer-navbar/index.html
index 63beed2a4..cb4e1d2ce 100644
--- a/docs/4.0/examples/sticky-footer-navbar/index.html
+++ b/docs/4.0/examples/sticky-footer-navbar/index.html
@@ -60,7 +60,6 @@
       </div>
     </footer>
 
-
     <!-- Bootstrap core JavaScript
     ================================================== -->
     <!-- Placed at the end of the document so the pages load faster -->
diff --git a/docs/4.0/examples/tooltip-viewport/index.html b/docs/4.0/examples/tooltip-viewport/index.html
index b5899d2e9..aa8a13a0e 100644
--- a/docs/4.0/examples/tooltip-viewport/index.html
+++ b/docs/4.0/examples/tooltip-viewport/index.html
@@ -33,7 +33,6 @@
       <button type="button" class="btn btn-secondary tooltip-viewport-right btn-bottom" title="This should be shifted up">Shift Up</button>
     </div>
 
-
     <!-- Bootstrap core JavaScript
     ================================================== -->
     <!-- Placed at the end of the document so the pages load faster -->