v5: Simplify navbars by requiring containers (#29339)

* v5: Simplify navbars by requiring containers

* Update migration docs for navbar

5 files changed, 573 insertions, 514 deletions

diff --git a/scss/_navbar.scss b/scss/_navbar.scss
index f9e2b792a..b77585767 100644
--- a/scss/_navbar.scss
+++ b/scss/_navbar.scss
@@ -21,7 +21,10 @@
   flex-wrap: wrap; // allow us to do the line break for collapsing content
   align-items: center;
   justify-content: space-between; // space out brand from logo
-  padding: $navbar-padding-y $navbar-padding-x;
+  padding-top: $navbar-padding-y;
+  padding-right: $navbar-padding-x; // default: null
+  padding-bottom: $navbar-padding-y;
+  padding-left: $navbar-padding-x; // default: null
 
   // Because flex properties aren't inherited, we need to redeclare these first
   // few properties so that content nested within behave properly.
@@ -149,24 +152,6 @@
     $infix: breakpoint-infix($next, $grid-breakpoints);
 
     &#{$infix} {
-      @include media-breakpoint-down($breakpoint) {
-        %container-navbar-expand-#{$breakpoint} {
-          padding-right: 0;
-          padding-left: 0;
-        }
-
-        > .container,
-        > .container-fluid {
-          @extend %container-navbar-expand-#{$breakpoint};
-        }
-
-        @each $size, $container-max-width in $container-max-widths {
-          > .container#{breakpoint-infix($size, $container-max-widths)} {
-            @extend %container-navbar-expand-#{$breakpoint};
-          }
-        }
-      }
-
       @include media-breakpoint-up($next) {
         flex-flow: row nowrap;
         justify-content: flex-start;
diff --git a/scss/_variables.scss b/scss/_variables.scss
index 1adc5f5a0..e56e516d4 100644
--- a/scss/_variables.scss
+++ b/scss/_variables.scss
@@ -833,7 +833,7 @@ $nav-pills-link-active-bg:          $component-active-bg !default;
 // Navbar
 
 $navbar-padding-y:                  $spacer / 2 !default;
-$navbar-padding-x:                  $spacer !default;
+$navbar-padding-x:                  null !default;
 
 $navbar-nav-link-padding-x:         .5rem !default;
 
diff --git a/site/content/docs/4.3/components/navbar.md b/site/content/docs/4.3/components/navbar.md
index 9d3dd57a7..2fa70a89b 100644
--- a/site/content/docs/4.3/components/navbar.md
+++ b/site/content/docs/4.3/components/navbar.md
@@ -11,7 +11,7 @@ toc: true
 Here's what you need to know before getting started with the navbar:
 
 - Navbars require a wrapping `.navbar` with `.navbar-expand{-sm|-md|-lg|-xl}` for responsive collapsing and [color scheme](#color-schemes) classes.
-- Navbars and their contents are fluid by default. Use [optional containers](#containers) to limit their horizontal width.
+- Navbars and their contents are fluid by default. Change the [container](#containers) to limit their horizontal width in different ways.
 - Use our [spacing]({{< docsref "/utilities/spacing" >}}) and [flex]({{< docsref "/utilities/flex" >}}) utility classes for controlling spacing and alignment within navbars.
 - Navbars are responsive by default, but you can easily modify them to change that. Responsive behavior depends on our Collapse JavaScript plugin.
 - Ensure accessibility by using a `<nav>` element or, if using a more generic element such as a `<div>`, add a `role="navigation"` to every navbar to explicitly identify it as a landmark region for users of assistive technologies.
@@ -37,38 +37,40 @@ Here's an example of all the sub-components included in a responsive light-theme
 
 {{< example >}}
 <nav class="navbar navbar-expand-lg navbar-light bg-light">
-  <a class="navbar-brand" href="#">Navbar</a>
-  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
-    <span class="navbar-toggler-icon"></span>
-  </button>
-
-  <div class="collapse navbar-collapse" id="navbarSupportedContent">
-    <ul class="navbar-nav mr-auto">
-      <li class="nav-item active">
-        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link" href="#">Link</a>
-      </li>
-      <li class="nav-item dropdown">
-        <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-expanded="false">
-          Dropdown
-        </a>
-        <ul class="dropdown-menu" aria-labelledby="navbarDropdown">
-          <li><a class="dropdown-item" href="#">Action</a></li>
-          <li><a class="dropdown-item" href="#">Another action</a></li>
-          <li><hr class="dropdown-divider"></li>
-          <li><a class="dropdown-item" href="#">Something else here</a></li>
-        </ul>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
-      </li>
-    </ul>
-    <form class="form-inline my-2 my-lg-0">
-      <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
-      <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
-    </form>
+  <div class="container-fluid">
+    <a class="navbar-brand" href="#">Navbar</a>
+    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
+      <span class="navbar-toggler-icon"></span>
+    </button>
+
+    <div class="collapse navbar-collapse" id="navbarSupportedContent">
+      <ul class="navbar-nav mr-auto">
+        <li class="nav-item active">
+          <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link" href="#">Link</a>
+        </li>
+        <li class="nav-item dropdown">
+          <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-expanded="false">
+            Dropdown
+          </a>
+          <ul class="dropdown-menu" aria-labelledby="navbarDropdown">
+            <li><a class="dropdown-item" href="#">Action</a></li>
+            <li><a class="dropdown-item" href="#">Another action</a></li>
+            <li><hr class="dropdown-divider"></li>
+            <li><a class="dropdown-item" href="#">Something else here</a></li>
+          </ul>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
+        </li>
+      </ul>
+      <form class="form-inline my-2 my-lg-0">
+        <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
+        <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
+      </form>
+    </div>
   </div>
 </nav>
 {{< /example >}}
@@ -82,12 +84,16 @@ The `.navbar-brand` can be applied to most elements, but an anchor works best as
 {{< example >}}
 <!-- As a link -->
 <nav class="navbar navbar-light bg-light">
-  <a class="navbar-brand" href="#">Navbar</a>
+  <div class="container-fluid">
+    <a class="navbar-brand" href="#">Navbar</a>
+  </div>
 </nav>
 
 <!-- As a heading -->
 <nav class="navbar navbar-light bg-light">
-  <span class="navbar-brand mb-0 h1">Navbar</span>
+  <div class="container-fluid">
+    <span class="navbar-brand mb-0 h1">Navbar</span>
+  </div>
 </nav>
 {{< /example >}}
 
@@ -96,19 +102,23 @@ Adding images to the `.navbar-brand` will likely always require custom styles or
 {{< example >}}
 <!-- Just an image -->
 <nav class="navbar navbar-light bg-light">
-  <a class="navbar-brand" href="#">
-    <img src="/docs/{{< param docs_version >}}/assets/brand/bootstrap-solid.svg" width="30" height="30" alt="">
-  </a>
+  <div class="container">
+    <a class="navbar-brand" href="#">
+      <img src="/docs/{{< param docs_version >}}/assets/brand/bootstrap-solid.svg" width="30" height="30" alt="">
+    </a>
+  </div>
 </nav>
 {{< /example >}}
 
 {{< example >}}
 <!-- Image and text -->
 <nav class="navbar navbar-light bg-light">
-  <a class="navbar-brand" href="#">
-    <img src="/docs/{{< param docs_version >}}/assets/brand/bootstrap-solid.svg" width="30" height="30" class="d-inline-block align-top" alt="">
-    Bootstrap
-  </a>
+  <div class="container-fluid">
+    <a class="navbar-brand" href="#">
+      <img src="/docs/{{< param docs_version >}}/assets/brand/bootstrap-solid.svg" width="30" height="30" class="d-inline-block align-top" alt="">
+      Bootstrap
+    </a>
+  </div>
 </nav>
 {{< /example >}}
 
@@ -120,25 +130,27 @@ Active states—with `.active`—to indicate the current page can be applied dir
 
 {{< example >}}
 <nav class="navbar navbar-expand-lg navbar-light bg-light">
-  <a class="navbar-brand" href="#">Navbar</a>
-  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
-    <span class="navbar-toggler-icon"></span>
-  </button>
-  <div class="collapse navbar-collapse" id="navbarNav">
-    <ul class="navbar-nav">
-      <li class="nav-item active">
-        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link" href="#">Features</a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link" href="#">Pricing</a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
-      </li>
-    </ul>
+  <div class="container-fluid">
+    <a class="navbar-brand" href="#">Navbar</a>
+    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
+      <span class="navbar-toggler-icon"></span>
+    </button>
+    <div class="collapse navbar-collapse" id="navbarNav">
+      <ul class="navbar-nav">
+        <li class="nav-item active">
+          <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link" href="#">Features</a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link" href="#">Pricing</a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
+        </li>
+      </ul>
+    </div>
   </div>
 </nav>
 {{< /example >}}
@@ -147,16 +159,18 @@ And because we use classes for our navs, you can avoid the list-based approach e
 
 {{< example >}}
 <nav class="navbar navbar-expand-lg navbar-light bg-light">
-  <a class="navbar-brand" href="#">Navbar</a>
-  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
-    <span class="navbar-toggler-icon"></span>
-  </button>
-  <div class="collapse navbar-collapse" id="navbarNavAltMarkup">
-    <div class="navbar-nav">
-      <a class="nav-item nav-link active" href="#">Home <span class="sr-only">(current)</span></a>
-      <a class="nav-item nav-link" href="#">Features</a>
-      <a class="nav-item nav-link" href="#">Pricing</a>
-      <a class="nav-item nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
+  <div class="container-fluid">
+    <a class="navbar-brand" href="#">Navbar</a>
+    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
+      <span class="navbar-toggler-icon"></span>
+    </button>
+    <div class="collapse navbar-collapse" id="navbarNavAltMarkup">
+      <div class="navbar-nav">
+        <a class="nav-item nav-link active" href="#">Home <span class="sr-only">(current)</span></a>
+        <a class="nav-item nav-link" href="#">Features</a>
+        <a class="nav-item nav-link" href="#">Pricing</a>
+        <a class="nav-item nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
+      </div>
     </div>
   </div>
 </nav>
@@ -166,32 +180,34 @@ You may also utilize dropdowns in your navbar nav. Dropdown menus require a wrap
 
 {{< example >}}
 <nav class="navbar navbar-expand-lg navbar-light bg-light">
-  <a class="navbar-brand" href="#">Navbar</a>
-  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
-    <span class="navbar-toggler-icon"></span>
-  </button>
-  <div class="collapse navbar-collapse" id="navbarNavDropdown">
-    <ul class="navbar-nav">
-      <li class="nav-item active">
-        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link" href="#">Features</a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link" href="#">Pricing</a>
-      </li>
-      <li class="nav-item dropdown">
-        <a class="nav-link dropdown-toggle" href="#" id="navbarDropdownMenuLink" role="button" data-toggle="dropdown" aria-expanded="false">
-          Dropdown link
-        </a>
-        <ul class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">
-          <li><a class="dropdown-item" href="#">Action</a></li>
-          <li><a class="dropdown-item" href="#">Another action</a></li>
-          <li><a class="dropdown-item" href="#">Something else here</a></li>
-        </ul>
-      </li>
-    </ul>
+  <div class="container-fluid">
+    <a class="navbar-brand" href="#">Navbar</a>
+    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
+      <span class="navbar-toggler-icon"></span>
+    </button>
+    <div class="collapse navbar-collapse" id="navbarNavDropdown">
+      <ul class="navbar-nav">
+        <li class="nav-item active">
+          <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link" href="#">Features</a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link" href="#">Pricing</a>
+        </li>
+        <li class="nav-item dropdown">
+          <a class="nav-link dropdown-toggle" href="#" id="navbarDropdownMenuLink" role="button" data-toggle="dropdown" aria-expanded="false">
+            Dropdown link
+          </a>
+          <ul class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">
+            <li><a class="dropdown-item" href="#">Action</a></li>
+            <li><a class="dropdown-item" href="#">Another action</a></li>
+            <li><a class="dropdown-item" href="#">Something else here</a></li>
+          </ul>
+        </li>
+      </ul>
+    </div>
   </div>
 </nav>
 {{< /example >}}
@@ -202,10 +218,12 @@ Place various form controls and components within a navbar with `.form-inline`.
 
 {{< example >}}
 <nav class="navbar navbar-light bg-light">
-  <form class="form-inline">
-    <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
-    <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
-  </form>
+  <div class="container-fluid">
+    <form class="form-inline">
+      <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
+      <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
+    </form>
+  </div>
 </nav>
 {{< /example >}}
 
@@ -213,11 +231,13 @@ Immediate children elements in `.navbar` use flex layout and will default to `ju
 
 {{< example >}}
 <nav class="navbar navbar-light bg-light">
-  <a class="navbar-brand">Navbar</a>
-  <form class="form-inline">
-    <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
-    <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
-  </form>
+  <div class="container-fluid">
+    <a class="navbar-brand">Navbar</a>
+    <form class="form-inline">
+      <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
+      <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
+    </form>
+  </div>
 </nav>
 {{< /example >}}
 
@@ -225,14 +245,16 @@ Input groups work, too:
 
 {{< example >}}
 <nav class="navbar navbar-light bg-light">
-  <form class="form-inline">
-    <div class="input-group">
-      <div class="input-group-prepend">
-        <span class="input-group-text" id="basic-addon1">@</span>
+  <div class="container-fluid">
+    <form class="form-inline">
+      <div class="input-group">
+        <div class="input-group-prepend">
+          <span class="input-group-text" id="basic-addon1">@</span>
+        </div>
+        <input type="text" class="form-control" placeholder="Username" aria-label="Username" aria-describedby="basic-addon1">
       </div>
-      <input type="text" class="form-control" placeholder="Username" aria-label="Username" aria-describedby="basic-addon1">
-    </div>
-  </form>
+    </form>
+  </div>
 </nav>
 {{< /example >}}
 
@@ -240,10 +262,12 @@ Various buttons are supported as part of these navbar forms, too. This is also a
 
 {{< example >}}
 <nav class="navbar navbar-light bg-light">
-  <form class="form-inline">
-    <button class="btn btn-outline-success" type="button">Main button</button>
-    <button class="btn btn-sm btn-outline-secondary" type="button">Smaller button</button>
-  </form>
+  <div class="container-fluid">
+    <form class="form-inline">
+      <button class="btn btn-outline-success" type="button">Main button</button>
+      <button class="btn btn-sm btn-outline-secondary" type="button">Smaller button</button>
+    </form>
+  </div>
 </nav>
 {{< /example >}}
 
@@ -253,32 +277,7 @@ Navbars may contain bits of text with the help of `.navbar-text`. This class adj
 
 {{< example >}}
 <nav class="navbar navbar-light bg-light">
-  <span class="navbar-text">
-    Navbar text with an inline element
-  </span>
-</nav>
-{{< /example >}}
-
-Mix and match with other components and utilities as needed.
-
-{{< example >}}
-<nav class="navbar navbar-expand-lg navbar-light bg-light">
-  <a class="navbar-brand" href="#">Navbar w/ text</a>
-  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarText" aria-controls="navbarText" aria-expanded="false" aria-label="Toggle navigation">
-    <span class="navbar-toggler-icon"></span>
-  </button>
-  <div class="collapse navbar-collapse" id="navbarText">
-    <ul class="navbar-nav mr-auto">
-      <li class="nav-item active">
-        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link" href="#">Features</a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link" href="#">Pricing</a>
-      </li>
-    </ul>
+  <div class="container-fluid">
     <span class="navbar-text">
       Navbar text with an inline element
     </span>
@@ -286,18 +285,16 @@ Mix and match with other components and utilities as needed.
 </nav>
 {{< /example >}}
 
-## Color schemes
-
-Theming the navbar has never been easier thanks to the combination of theming classes and `background-color` utilities. Choose from `.navbar-light` for use with light background colors, or `.navbar-dark` for dark background colors. Then, customize with `.bg-*` utilities.
+Mix and match with other components and utilities as needed.
 
-<div class="bd-example">
-  <nav class="navbar navbar-expand-lg navbar-dark bg-dark">
-    <a class="navbar-brand" href="#">Navbar</a>
-    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarColor01" aria-controls="navbarColor01" aria-expanded="false" aria-label="Toggle navigation">
+{{< example >}}
+<nav class="navbar navbar-expand-lg navbar-light bg-light">
+  <div class="container-fluid">
+    <a class="navbar-brand" href="#">Navbar w/ text</a>
+    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarText" aria-controls="navbarText" aria-expanded="false" aria-label="Toggle navigation">
       <span class="navbar-toggler-icon"></span>
     </button>
-
-    <div class="collapse navbar-collapse" id="navbarColor01">
+    <div class="collapse navbar-collapse" id="navbarText">
       <ul class="navbar-nav mr-auto">
         <li class="nav-item active">
           <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
@@ -308,71 +305,108 @@ Theming the navbar has never been easier thanks to the combination of theming cl
         <li class="nav-item">
           <a class="nav-link" href="#">Pricing</a>
         </li>
-        <li class="nav-item">
-          <a class="nav-link" href="#">About</a>
-        </li>
       </ul>
-      <form class="form-inline">
-        <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
-        <button class="btn btn-outline-info my-2 my-sm-0" type="submit">Search</button>
-      </form>
+      <span class="navbar-text">
+        Navbar text with an inline element
+      </span>
+    </div>
+  </div>
+</nav>
+{{< /example >}}
+
+## Color schemes
+
+Theming the navbar has never been easier thanks to the combination of theming classes and `background-color` utilities. Choose from `.navbar-light` for use with light background colors, or `.navbar-dark` for dark background colors. Then, customize with `.bg-*` utilities.
+
+<div class="bd-example">
+  <nav class="navbar navbar-expand-lg navbar-dark bg-dark">
+    <div class="container-fluid">
+      <a class="navbar-brand" href="#">Navbar</a>
+      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarColor01" aria-controls="navbarColor01" aria-expanded="false" aria-label="Toggle navigation">
+        <span class="navbar-toggler-icon"></span>
+      </button>
+
+      <div class="collapse navbar-collapse" id="navbarColor01">
+        <ul class="navbar-nav mr-auto">
+          <li class="nav-item active">
+            <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">Features</a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">Pricing</a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">About</a>
+          </li>
+        </ul>
+        <form class="form-inline">
+          <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
+          <button class="btn btn-outline-info my-2 my-sm-0" type="submit">Search</button>
+        </form>
+      </div>
     </div>
   </nav>
 
   <nav class="navbar navbar-expand-lg navbar-dark bg-primary">
-    <a class="navbar-brand" href="#">Navbar</a>
-    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarColor02" aria-controls="navbarColor02" aria-expanded="false" aria-label="Toggle navigation">
-      <span class="navbar-toggler-icon"></span>
-    </button>
-
-    <div class="collapse navbar-collapse" id="navbarColor02">
-      <ul class="navbar-nav mr-auto">
-        <li class="nav-item active">
-          <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
-        </li>
-        <li class="nav-item">
-          <a class="nav-link" href="#">Features</a>
-        </li>
-        <li class="nav-item">
-          <a class="nav-link" href="#">Pricing</a>
-        </li>
-        <li class="nav-item">
-          <a class="nav-link" href="#">About</a>
-        </li>
-      </ul>
-      <form class="form-inline">
-        <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
-        <button class="btn btn-outline-light my-2 my-sm-0" type="submit">Search</button>
-      </form>
+    <div class="container-fluid">
+      <a class="navbar-brand" href="#">Navbar</a>
+      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarColor02" aria-controls="navbarColor02" aria-expanded="false" aria-label="Toggle navigation">
+        <span class="navbar-toggler-icon"></span>
+      </button>
+
+      <div class="collapse navbar-collapse" id="navbarColor02">
+        <ul class="navbar-nav mr-auto">
+          <li class="nav-item active">
+            <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">Features</a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">Pricing</a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">About</a>
+          </li>
+        </ul>
+        <form class="form-inline">
+          <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
+          <button class="btn btn-outline-light my-2 my-sm-0" type="submit">Search</button>
+        </form>
+      </div>
     </div>
   </nav>
 
   <nav class="navbar navbar-expand-lg navbar-light" style="background-color: #e3f2fd;">
-    <a class="navbar-brand" href="#">Navbar</a>
-    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarColor03" aria-controls="navbarColor03" aria-expanded="false" aria-label="Toggle navigation">
-      <span class="navbar-toggler-icon"></span>
-    </button>
-
-    <div class="collapse navbar-collapse" id="navbarColor03">
-      <ul class="navbar-nav mr-auto">
-        <li class="nav-item active">
-          <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
-        </li>
-        <li class="nav-item">
-          <a class="nav-link" href="#">Features</a>
-        </li>
-        <li class="nav-item">
-          <a class="nav-link" href="#">Pricing</a>
-        </li>
-        <li class="nav-item">
-          <a class="nav-link" href="#">About</a>
-        </li>
-      </ul>
-      <form class="form-inline">
-        <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
-        <button class="btn btn-outline-primary my-2 my-sm-0" type="submit">Search</button>
-      </form>
-    </div>
+    <div class="container-fluid">
+      <a class="navbar-brand" href="#">Navbar</a>
+      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarColor03" aria-controls="navbarColor03" aria-expanded="false" aria-label="Toggle navigation">
+        <span class="navbar-toggler-icon"></span>
+      </button>
+
+      <div class="collapse navbar-collapse" id="navbarColor03">
+        <ul class="navbar-nav mr-auto">
+          <li class="nav-item active">
+            <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">Features</a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">Pricing</a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">About</a>
+          </li>
+        </ul>
+        <form class="form-inline">
+          <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
+          <button class="btn btn-outline-primary my-2 my-sm-0" type="submit">Search</button>
+        </form>
+      </div>
+      </div>
   </nav>
 </div>
 
@@ -392,21 +426,23 @@ Theming the navbar has never been easier thanks to the combination of theming cl
 
 ## Containers
 
-Although it's not required, you can wrap a navbar in a `.container` to center it on a page or add one within to only center the contents of a [fixed or static top navbar](#placement).
+Although it's not required, you can wrap a navbar in a `.container` to center it on a page or add one within to only center the contents of a [fixed or static top navbar](#placement). Note that an inner container is still required.
 
 {{< example >}}
 <div class="container">
   <nav class="navbar navbar-expand-lg navbar-light bg-light">
-    <a class="navbar-brand" href="#">Navbar</a>
+    <div class="container-fluid">
+      <a class="navbar-brand" href="#">Navbar</a>
+    </div>
   </nav>
 </div>
 {{< /example >}}
 
-When the container is within your navbar, its horizontal padding is removed at breakpoints lower than your specified `.navbar-expand{-sm|-md|-lg|-xl}` class. This ensures we're not doubling up on padding unnecessarily on lower viewports when your navbar is collapsed.
+Use any of the responsive containers to change how wide the content in your navbar.
 
 {{< example >}}
 <nav class="navbar navbar-expand-lg navbar-light bg-light">
-  <div class="container">
+  <div class="container-md">
     <a class="navbar-brand" href="#">Navbar</a>
   </div>
 </nav>
@@ -420,25 +456,33 @@ Also note that **`.sticky-top` uses `position: sticky`, which [isn't fully suppo
 
 {{< example >}}
 <nav class="navbar navbar-light bg-light">
-  <a class="navbar-brand" href="#">Default</a>
+  <div class="container-fluid">
+    <a class="navbar-brand" href="#">Default</a>
+  </div>
 </nav>
 {{< /example >}}
 
 {{< example >}}
 <nav class="navbar fixed-top navbar-light bg-light">
-  <a class="navbar-brand" href="#">Fixed top</a>
+  <div class="container-fluid">
+    <a class="navbar-brand" href="#">Fixed top</a>
+  </div>
 </nav>
 {{< /example >}}
 
 {{< example >}}
 <nav class="navbar fixed-bottom navbar-light bg-light">
-  <a class="navbar-brand" href="#">Fixed bottom</a>
+  <div class="container-fluid">
+    <a class="navbar-brand" href="#">Fixed bottom</a>
+  </div>
 </nav>
 {{< /example >}}
 
 {{< example >}}
 <nav class="navbar sticky-top navbar-light bg-light">
-  <a class="navbar-brand" href="#">Sticky top</a>
+  <div class="container-fluid">
+    <a class="navbar-brand" href="#">Sticky top</a>
+  </div>
 </nav>
 {{< /example >}}
 
@@ -456,26 +500,28 @@ With no `.navbar-brand` shown in lowest breakpoint:
 
 {{< example >}}
 <nav class="navbar navbar-expand-lg navbar-light bg-light">
-  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarTogglerDemo01" aria-controls="navbarTogglerDemo01" aria-expanded="false" aria-label="Toggle navigation">
-    <span class="navbar-toggler-icon"></span>
-  </button>
-  <div class="collapse navbar-collapse" id="navbarTogglerDemo01">
-    <a class="navbar-brand" href="#">Hidden brand</a>
-    <ul class="navbar-nav mr-auto mt-2 mt-lg-0">
-      <li class="nav-item active">
-        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link" href="#">Link</a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
-      </li>
-    </ul>
-    <form class="form-inline my-2 my-lg-0">
-      <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
-      <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
-    </form>
+  <div class="container-fluid">
+    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarTogglerDemo01" aria-controls="navbarTogglerDemo01" aria-expanded="false" aria-label="Toggle navigation">
+      <span class="navbar-toggler-icon"></span>
+    </button>
+    <div class="collapse navbar-collapse" id="navbarTogglerDemo01">
+      <a class="navbar-brand" href="#">Hidden brand</a>
+      <ul class="navbar-nav mr-auto mt-2 mt-lg-0">
+        <li class="nav-item active">
+          <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link" href="#">Link</a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
+        </li>
+      </ul>
+      <form class="form-inline my-2 my-lg-0">
+        <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
+        <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
+      </form>
+    </div>
   </div>
 </nav>
 {{< /example >}}
@@ -484,27 +530,29 @@ With a brand name shown on the left and toggler on the right:
 
 {{< example >}}
 <nav class="navbar navbar-expand-lg navbar-light bg-light">
-  <a class="navbar-brand" href="#">Navbar</a>
-  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarTogglerDemo02" aria-controls="navbarTogglerDemo02" aria-expanded="false" aria-label="Toggle navigation">
-    <span class="navbar-toggler-icon"></span>
-  </button>
-
-  <div class="collapse navbar-collapse" id="navbarTogglerDemo02">
-    <ul class="navbar-nav mr-auto mt-2 mt-lg-0">
-      <li class="nav-item active">
-        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link" href="#">Link</a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
-      </li>
-    </ul>
-    <form class="form-inline my-2 my-lg-0">
-      <input class="form-control mr-sm-2" type="search" placeholder="Search">
-      <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
-    </form>
+  <div class="container-fluid">
+    <a class="navbar-brand" href="#">Navbar</a>
+    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarTogglerDemo02" aria-controls="navbarTogglerDemo02" aria-expanded="false" aria-label="Toggle navigation">
+      <span class="navbar-toggler-icon"></span>
+    </button>
+
+    <div class="collapse navbar-collapse" id="navbarTogglerDemo02">
+      <ul class="navbar-nav mr-auto mt-2 mt-lg-0">
+        <li class="nav-item active">
+          <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link" href="#">Link</a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
+        </li>
+      </ul>
+      <form class="form-inline my-2 my-lg-0">
+        <input class="form-control mr-sm-2" type="search" placeholder="Search">
+        <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
+      </form>
+    </div>
   </div>
 </nav>
 {{< /example >}}
@@ -513,27 +561,29 @@ With a toggler on the left and brand name on the right:
 
 {{< example >}}
 <nav class="navbar navbar-expand-lg navbar-light bg-light">
-  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarTogglerDemo03" aria-controls="navbarTogglerDemo03" aria-expanded="false" aria-label="Toggle navigation">
-    <span class="navbar-toggler-icon"></span>
-  </button>
-  <a class="navbar-brand" href="#">Navbar</a>
-
-  <div class="collapse navbar-collapse" id="navbarTogglerDemo03">
-    <ul class="navbar-nav mr-auto mt-2 mt-lg-0">
-      <li class="nav-item active">
-        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link" href="#">Link</a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
-      </li>
-    </ul>
-    <form class="form-inline my-2 my-lg-0">
-      <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
-      <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
-    </form>
+  <div class="container-fluid">
+    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarTogglerDemo03" aria-controls="navbarTogglerDemo03" aria-expanded="false" aria-label="Toggle navigation">
+      <span class="navbar-toggler-icon"></span>
+    </button>
+    <a class="navbar-brand" href="#">Navbar</a>
+
+    <div class="collapse navbar-collapse" id="navbarTogglerDemo03">
+      <ul class="navbar-nav mr-auto mt-2 mt-lg-0">
+        <li class="nav-item active">
+          <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link" href="#">Link</a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
+        </li>
+      </ul>
+      <form class="form-inline my-2 my-lg-0">
+        <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
+        <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
+      </form>
+    </div>
   </div>
 </nav>
 {{< /example >}}
@@ -550,8 +600,10 @@ Sometimes you want to use the collapse plugin to trigger hidden content elsewher
   </div>
 </div>
 <nav class="navbar navbar-dark bg-dark">
-  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarToggleExternalContent" aria-controls="navbarToggleExternalContent" aria-expanded="false" aria-label="Toggle navigation">
-    <span class="navbar-toggler-icon"></span>
-  </button>
+  <div class="container-fluid">
+    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarToggleExternalContent" aria-controls="navbarToggleExternalContent" aria-expanded="false" aria-label="Toggle navigation">
+      <span class="navbar-toggler-icon"></span>
+    </button>
+  </div>
 </nav>
 {{< /example >}}
diff --git a/site/content/docs/4.3/examples/navbars/index.html b/site/content/docs/4.3/examples/navbars/index.html
index 3ec8bb9c7..7e40d3f78 100644
--- a/site/content/docs/4.3/examples/navbars/index.html
+++ b/site/content/docs/4.3/examples/navbars/index.html
@@ -6,194 +6,172 @@ extra_css:
 ---
 
 <nav class="navbar navbar-dark bg-dark">
-  <a class="navbar-brand" href="#">Never expand</a>
-  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample01" aria-controls="navbarsExample01" aria-expanded="false" aria-label="Toggle navigation">
-    <span class="navbar-toggler-icon"></span>
-  </button>
+  <div class="container-fluid">
+    <a class="navbar-brand" href="#">Never expand</a>
+    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample01" aria-controls="navbarsExample01" aria-expanded="false" aria-label="Toggle navigation">
+      <span class="navbar-toggler-icon"></span>
+    </button>
 
-  <div class="collapse navbar-collapse" id="navbarsExample01">
-    <ul class="navbar-nav mr-auto">
-      <li class="nav-item active">
-        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link" href="#">Link</a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
-      </li>
-      <li class="nav-item dropdown">
-        <a class="nav-link dropdown-toggle" href="#" id="dropdown01" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
-        <div class="dropdown-menu" aria-labelledby="dropdown01">
-          <a class="dropdown-item" href="#">Action</a>
-          <a class="dropdown-item" href="#">Another action</a>
-          <a class="dropdown-item" href="#">Something else here</a>
-        </div>
-      </li>
-    </ul>
-    <form class="form-inline my-2 my-md-0">
-      <input class="form-control" type="text" placeholder="Search" aria-label="Search">
-    </form>
+    <div class="collapse navbar-collapse" id="navbarsExample01">
+      <ul class="navbar-nav mr-auto">
+        <li class="nav-item active">
+          <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link" href="#">Link</a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
+        </li>
+        <li class="nav-item dropdown">
+          <a class="nav-link dropdown-toggle" href="#" id="dropdown01" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
+          <div class="dropdown-menu" aria-labelledby="dropdown01">
+            <a class="dropdown-item" href="#">Action</a>
+            <a class="dropdown-item" href="#">Another action</a>
+            <a class="dropdown-item" href="#">Something else here</a>
+          </div>
+        </li>
+      </ul>
+      <form class="form-inline my-2 my-md-0">
+        <input class="form-control" type="text" placeholder="Search" aria-label="Search">
+      </form>
+    </div>
   </div>
 </nav>
 
 <nav class="navbar navbar-expand navbar-dark bg-dark">
-  <a class="navbar-brand" href="#">Always expand</a>
-  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample02" aria-controls="navbarsExample02" aria-expanded="false" aria-label="Toggle navigation">
-    <span class="navbar-toggler-icon"></span>
-  </button>
+  <div class="container-fluid">
+    <a class="navbar-brand" href="#">Always expand</a>
+    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample02" aria-controls="navbarsExample02" aria-expanded="false" aria-label="Toggle navigation">
+      <span class="navbar-toggler-icon"></span>
+    </button>
 
-  <div class="collapse navbar-collapse" id="navbarsExample02">
-    <ul class="navbar-nav mr-auto">
-      <li class="nav-item active">
-        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link" href="#">Link</a>
-      </li>
-    </ul>
-    <form class="form-inline my-2 my-md-0">
-      <input class="form-control" type="text" placeholder="Search">
-    </form>
+    <div class="collapse navbar-collapse" id="navbarsExample02">
+      <ul class="navbar-nav mr-auto">
+        <li class="nav-item active">
+          <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link" href="#">Link</a>
+        </li>
+      </ul>
+      <form class="form-inline my-2 my-md-0">
+        <input class="form-control" type="text" placeholder="Search">
+      </form>
+    </div>
   </div>
 </nav>
 
 <nav class="navbar navbar-expand-sm navbar-dark bg-dark">
-  <a class="navbar-brand" href="#">Expand at sm</a>
-  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample03" aria-controls="navbarsExample03" aria-expanded="false" aria-label="Toggle navigation">
-    <span class="navbar-toggler-icon"></span>
-  </button>
+  <div class="container-fluid">
+    <a class="navbar-brand" href="#">Expand at sm</a>
+    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample03" aria-controls="navbarsExample03" aria-expanded="false" aria-label="Toggle navigation">
+      <span class="navbar-toggler-icon"></span>
+    </button>
 
-  <div class="collapse navbar-collapse" id="navbarsExample03">
-    <ul class="navbar-nav mr-auto">
-      <li class="nav-item active">
-        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link" href="#">Link</a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
-      </li>
-      <li class="nav-item dropdown">
-        <a class="nav-link dropdown-toggle" href="#" id="dropdown03" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
-        <div class="dropdown-menu" aria-labelledby="dropdown03">
-          <a class="dropdown-item" href="#">Action</a>
-          <a class="dropdown-item" href="#">Another action</a>
-          <a class="dropdown-item" href="#">Something else here</a>
-        </div>
-      </li>
-    </ul>
-    <form class="form-inline my-2 my-md-0">
-      <input class="form-control" type="text" placeholder="Search">
-    </form>
+    <div class="collapse navbar-collapse" id="navbarsExample03">
+      <ul class="navbar-nav mr-auto">
+        <li class="nav-item active">
+          <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link" href="#">Link</a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
+        </li>
+        <li class="nav-item dropdown">
+          <a class="nav-link dropdown-toggle" href="#" id="dropdown03" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
+          <div class="dropdown-menu" aria-labelledby="dropdown03">
+            <a class="dropdown-item" href="#">Action</a>
+            <a class="dropdown-item" href="#">Another action</a>
+            <a class="dropdown-item" href="#">Something else here</a>
+          </div>
+        </li>
+      </ul>
+      <form class="form-inline my-2 my-md-0">
+        <input class="form-control" type="text" placeholder="Search">
+      </form>
+    </div>
   </div>
 </nav>
 
 <nav class="navbar navbar-expand-md navbar-dark bg-dark">
-  <a class="navbar-brand" href="#">Expand at md</a>
-  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample04" aria-controls="navbarsExample04" aria-expanded="false" aria-label="Toggle navigation">
-    <span class="navbar-toggler-icon"></span>
-  </button>
+  <div class="container-fluid">
+    <a class="navbar-brand" href="#">Expand at md</a>
+    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample04" aria-controls="navbarsExample04" aria-expanded="false" aria-label="Toggle navigation">
+      <span class="navbar-toggler-icon"></span>
+    </button>
 
-  <div class="collapse navbar-collapse" id="navbarsExample04">
-    <ul class="navbar-nav mr-auto">
-      <li class="nav-item active">
-        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link" href="#">Link</a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
-      </li>
-      <li class="nav-item dropdown">
-        <a class="nav-link dropdown-toggle" href="#" id="dropdown04" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
-        <div class="dropdown-menu" aria-labelledby="dropdown04">
-          <a class="dropdown-item" href="#">Action</a>
-          <a class="dropdown-item" href="#">Another action</a>
-          <a class="dropdown-item" href="#">Something else here</a>
-        </div>
-      </li>
-    </ul>
-    <form class="form-inline my-2 my-md-0">
-      <input class="form-control" type="text" placeholder="Search">
-    </form>
+    <div class="collapse navbar-collapse" id="navbarsExample04">
+      <ul class="navbar-nav mr-auto">
+        <li class="nav-item active">
+          <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link" href="#">Link</a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
+        </li>
+        <li class="nav-item dropdown">
+          <a class="nav-link dropdown-toggle" href="#" id="dropdown04" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
+          <div class="dropdown-menu" aria-labelledby="dropdown04">
+            <a class="dropdown-item" href="#">Action</a>
+            <a class="dropdown-item" href="#">Another action</a>
+            <a class="dropdown-item" href="#">Something else here</a>
+          </div>
+        </li>
+      </ul>
+      <form class="form-inline my-2 my-md-0">
+        <input class="form-control" type="text" placeholder="Search">
+      </form>
+    </div>
   </div>
 </nav>
 
 <nav class="navbar navbar-expand-lg navbar-dark bg-dark">
-  <a class="navbar-brand" href="#">Expand at lg</a>
-  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample05" aria-controls="navbarsExample05" aria-expanded="false" aria-label="Toggle navigation">
-    <span class="navbar-toggler-icon"></span>
-  </button>
+  <div class="container-fluid">
+    <a class="navbar-brand" href="#">Expand at lg</a>
+    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample05" aria-controls="navbarsExample05" aria-expanded="false" aria-label="Toggle navigation">
+      <span class="navbar-toggler-icon"></span>
+    </button>
 
-  <div class="collapse navbar-collapse" id="navbarsExample05">
-    <ul class="navbar-nav mr-auto">
-      <li class="nav-item active">
-        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link" href="#">Link</a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
-      </li>
-      <li class="nav-item dropdown">
-        <a class="nav-link dropdown-toggle" href="#" id="dropdown05" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
-        <div class="dropdown-menu" aria-labelledby="dropdown05">
-          <a class="dropdown-item" href="#">Action</a>
-          <a class="dropdown-item" href="#">Another action</a>
-          <a class="dropdown-item" href="#">Something else here</a>
-        </div>
-      </li>
-    </ul>
-    <form class="form-inline my-2 my-md-0">
-      <input class="form-control" type="text" placeholder="Search">
-    </form>
+    <div class="collapse navbar-collapse" id="navbarsExample05">
+      <ul class="navbar-nav mr-auto">
+        <li class="nav-item active">
+          <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link" href="#">Link</a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
+        </li>
+        <li class="nav-item dropdown">
+          <a class="nav-link dropdown-toggle" href="#" id="dropdown05" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
+          <div class="dropdown-menu" aria-labelledby="dropdown05">
+            <a class="dropdown-item" href="#">Action</a>
+            <a class="dropdown-item" href="#">Another action</a>
+            <a class="dropdown-item" href="#">Something else here</a>
+          </div>
+        </li>
+      </ul>
+      <form class="form-inline my-2 my-md-0">
+        <input class="form-control" type="text" placeholder="Search">
+      </form>
+    </div>
   </div>
 </nav>
 
 <nav class="navbar navbar-expand-xl navbar-dark bg-dark">
-  <a class="navbar-brand" href="#">Expand at xl</a>
-  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample06" aria-controls="navbarsExample06" aria-expanded="false" aria-label="Toggle navigation">
-    <span class="navbar-toggler-icon"></span>
-  </button>
-
-  <div class="collapse navbar-collapse" id="navbarsExample06">
-    <ul class="navbar-nav mr-auto">
-      <li class="nav-item active">
-        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link" href="#">Link</a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
-      </li>
-      <li class="nav-item dropdown">
-        <a class="nav-link dropdown-toggle" href="#" id="dropdown06" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
-        <div class="dropdown-menu" aria-labelledby="dropdown06">
-          <a class="dropdown-item" href="#">Action</a>
-          <a class="dropdown-item" href="#">Another action</a>
-          <a class="dropdown-item" href="#">Something else here</a>
-        </div>
-      </li>
-    </ul>
-    <form class="form-inline my-2 my-md-0">
-      <input class="form-control" type="text" placeholder="Search">
-    </form>
-  </div>
-</nav>
-
-<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
-  <div class="container">
-    <a class="navbar-brand" href="#">Container</a>
-    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample07" aria-controls="navbarsExample07" aria-expanded="false" aria-label="Toggle navigation">
+  <div class="container-fluid">
+    <a class="navbar-brand" href="#">Expand at xl</a>
+    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample06" aria-controls="navbarsExample06" aria-expanded="false" aria-label="Toggle navigation">
       <span class="navbar-toggler-icon"></span>
     </button>
 
-    <div class="collapse navbar-collapse" id="navbarsExample07">
+    <div class="collapse navbar-collapse" id="navbarsExample06">
       <ul class="navbar-nav mr-auto">
         <li class="nav-item active">
           <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
@@ -205,8 +183,8 @@ extra_css:
           <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
         </li>
         <li class="nav-item dropdown">
-          <a class="nav-link dropdown-toggle" href="#" id="dropdown07" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
-          <div class="dropdown-menu" aria-labelledby="dropdown07">
+          <a class="nav-link dropdown-toggle" href="#" id="dropdown06" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
+          <div class="dropdown-menu" aria-labelledby="dropdown06">
             <a class="dropdown-item" href="#">Action</a>
             <a class="dropdown-item" href="#">Another action</a>
             <a class="dropdown-item" href="#">Something else here</a>
@@ -214,20 +192,20 @@ extra_css:
         </li>
       </ul>
       <form class="form-inline my-2 my-md-0">
-        <input class="form-control" type="text" placeholder="Search" aria-label="Search">
+        <input class="form-control" type="text" placeholder="Search">
       </form>
     </div>
   </div>
 </nav>
 
 <nav class="navbar navbar-expand-lg navbar-dark bg-dark">
-  <div class="container-xl">
-    <a class="navbar-brand" href="#">Container XL</a>
-    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample07XL" aria-controls="navbarsExample07XL" aria-expanded="false" aria-label="Toggle navigation">
+  <div class="container">
+    <a class="navbar-brand" href="#">Container</a>
+    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample07" aria-controls="navbarsExample07" aria-expanded="false" aria-label="Toggle navigation">
       <span class="navbar-toggler-icon"></span>
     </button>
 
-    <div class="collapse navbar-collapse" id="navbarsExample07XL">
+    <div class="collapse navbar-collapse" id="navbarsExample07">
       <ul class="navbar-nav mr-auto">
         <li class="nav-item active">
           <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
@@ -239,8 +217,8 @@ extra_css:
           <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
         </li>
         <li class="nav-item dropdown">
-          <a class="nav-link dropdown-toggle" href="#" id="dropdown07XL" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
-          <div class="dropdown-menu" aria-labelledby="dropdown07XL">
+          <a class="nav-link dropdown-toggle" href="#" id="dropdown07" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
+          <div class="dropdown-menu" aria-labelledby="dropdown07">
             <a class="dropdown-item" href="#">Action</a>
             <a class="dropdown-item" href="#">Another action</a>
             <a class="dropdown-item" href="#">Something else here</a>
@@ -254,46 +232,14 @@ extra_css:
   </div>
 </nav>
 
-<div class="container-xl mt-n2 mb-3">
-  Matching .container-xl...
-</div>
-
 <nav class="navbar navbar-expand-lg navbar-dark bg-dark">
-  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample08" aria-controls="navbarsExample08" aria-expanded="false" aria-label="Toggle navigation">
-    <span class="navbar-toggler-icon"></span>
-  </button>
-
-  <div class="collapse navbar-collapse justify-content-md-center" id="navbarsExample08">
-    <ul class="navbar-nav">
-      <li class="nav-item active">
-        <a class="nav-link" href="#">Centered nav only <span class="sr-only">(current)</span></a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link" href="#">Link</a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
-      </li>
-      <li class="nav-item dropdown">
-        <a class="nav-link dropdown-toggle" href="#" id="dropdown08" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
-        <div class="dropdown-menu" aria-labelledby="dropdown08">
-          <a class="dropdown-item" href="#">Action</a>
-          <a class="dropdown-item" href="#">Another action</a>
-          <a class="dropdown-item" href="#">Something else here</a>
-        </div>
-      </li>
-    </ul>
-  </div>
-</nav>
-
-<div class="container">
-  <nav class="navbar navbar-expand-lg navbar-light bg-light rounded">
-    <a class="navbar-brand" href="#">Navbar</a>
-    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample09" aria-controls="navbarsExample09" aria-expanded="false" aria-label="Toggle navigation">
+  <div class="container-xl">
+    <a class="navbar-brand" href="#">Container XL</a>
+    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample07XL" aria-controls="navbarsExample07XL" aria-expanded="false" aria-label="Toggle navigation">
       <span class="navbar-toggler-icon"></span>
     </button>
 
-    <div class="collapse navbar-collapse" id="navbarsExample09">
+    <div class="collapse navbar-collapse" id="navbarsExample07XL">
       <ul class="navbar-nav mr-auto">
         <li class="nav-item active">
           <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
@@ -305,8 +251,8 @@ extra_css:
           <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
         </li>
         <li class="nav-item dropdown">
-          <a class="nav-link dropdown-toggle" href="#" id="dropdown09" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
-          <div class="dropdown-menu" aria-labelledby="dropdown09">
+          <a class="nav-link dropdown-toggle" href="#" id="dropdown07XL" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
+          <div class="dropdown-menu" aria-labelledby="dropdown07XL">
             <a class="dropdown-item" href="#">Action</a>
             <a class="dropdown-item" href="#">Another action</a>
             <a class="dropdown-item" href="#">Something else here</a>
@@ -317,14 +263,20 @@ extra_css:
         <input class="form-control" type="text" placeholder="Search" aria-label="Search">
       </form>
     </div>
-  </nav>
+  </div>
+</nav>
 
-  <nav class="navbar navbar-expand-lg navbar-light bg-light rounded">
-    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample10" aria-controls="navbarsExample10" aria-expanded="false" aria-label="Toggle navigation">
+<div class="container-xl mt-n2 mb-3">
+  Matching .container-xl...
+</div>
+
+<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
+  <div class="container-fluid">
+    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample08" aria-controls="navbarsExample08" aria-expanded="false" aria-label="Toggle navigation">
       <span class="navbar-toggler-icon"></span>
     </button>
 
-    <div class="collapse navbar-collapse justify-content-md-center" id="navbarsExample10">
+    <div class="collapse navbar-collapse justify-content-md-center" id="navbarsExample08">
       <ul class="navbar-nav">
         <li class="nav-item active">
           <a class="nav-link" href="#">Centered nav only <span class="sr-only">(current)</span></a>
@@ -336,8 +288,8 @@ extra_css:
           <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
         </li>
         <li class="nav-item dropdown">
-          <a class="nav-link dropdown-toggle" href="#" id="dropdown10" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
-          <div class="dropdown-menu" aria-labelledby="dropdown10">
+          <a class="nav-link dropdown-toggle" href="#" id="dropdown08" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
+          <div class="dropdown-menu" aria-labelledby="dropdown08">
             <a class="dropdown-item" href="#">Action</a>
             <a class="dropdown-item" href="#">Another action</a>
             <a class="dropdown-item" href="#">Something else here</a>
@@ -345,6 +297,72 @@ extra_css:
         </li>
       </ul>
     </div>
+  </div>
+</nav>
+
+<div class="container">
+  <nav class="navbar navbar-expand-lg navbar-light bg-light rounded">
+    <div class="container-fluid">
+      <a class="navbar-brand" href="#">Navbar</a>
+      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample09" aria-controls="navbarsExample09" aria-expanded="false" aria-label="Toggle navigation">
+        <span class="navbar-toggler-icon"></span>
+      </button>
+
+      <div class="collapse navbar-collapse" id="navbarsExample09">
+        <ul class="navbar-nav mr-auto">
+          <li class="nav-item active">
+            <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">Link</a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
+          </li>
+          <li class="nav-item dropdown">
+            <a class="nav-link dropdown-toggle" href="#" id="dropdown09" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
+            <div class="dropdown-menu" aria-labelledby="dropdown09">
+              <a class="dropdown-item" href="#">Action</a>
+              <a class="dropdown-item" href="#">Another action</a>
+              <a class="dropdown-item" href="#">Something else here</a>
+            </div>
+          </li>
+        </ul>
+        <form class="form-inline my-2 my-md-0">
+          <input class="form-control" type="text" placeholder="Search" aria-label="Search">
+        </form>
+      </div>
+    </div>
+  </nav>
+
+  <nav class="navbar navbar-expand-lg navbar-light bg-light rounded">
+    <div class="container-fluid">
+      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample10" aria-controls="navbarsExample10" aria-expanded="false" aria-label="Toggle navigation">
+        <span class="navbar-toggler-icon"></span>
+      </button>
+
+      <div class="collapse navbar-collapse justify-content-md-center" id="navbarsExample10">
+        <ul class="navbar-nav">
+          <li class="nav-item active">
+            <a class="nav-link" href="#">Centered nav only <span class="sr-only">(current)</span></a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">Link</a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
+          </li>
+          <li class="nav-item dropdown">
+            <a class="nav-link dropdown-toggle" href="#" id="dropdown10" data-toggle="dropdown" aria-expanded="false">Dropdown</a>
+            <div class="dropdown-menu" aria-labelledby="dropdown10">
+              <a class="dropdown-item" href="#">Action</a>
+              <a class="dropdown-item" href="#">Another action</a>
+              <a class="dropdown-item" href="#">Something else here</a>
+            </div>
+          </li>
+        </ul>
+      </div>
+    </div>
   </nav>
 
   <main role="main">
diff --git a/site/content/docs/4.3/migration.md b/site/content/docs/4.3/migration.md
index 0a10da5f0..a8aeebd39 100644
--- a/site/content/docs/4.3/migration.md
+++ b/site/content/docs/4.3/migration.md
@@ -110,6 +110,10 @@ Badges were overhauled to better differentiate themselves from buttons and to be
 
 - The jumbotron component is removed in favor of utility classes like `.bg-light` for the background color and `.p-*` classes to control padding.
 
+### Navbars
+
+- All navbars now require a container within. This drastically simplifies spacing requirements and removes the need for extensive CSS overrides we added for responsive containers in v4.
+
 ### Pagination
 
 - Pagination links now have customizable `margin-left` that are dynamically rounded on all corners when separated from one another.