Rename navbar-toggleable to navbar-expand in docs (#22309)

docs/components/navbar.md

@@ -16,7 +16,7 @@ The navbar is a wrapper that positions branding, navigation, and other elements
 
 Here's what you need to know before getting started with the navbar:
 
-- Navbars require a wrapping `.navbar` with `.navbar-toggleable{-sm|-md|-lg|-xl}` for responsive collapsing and [color scheme](#color-schemes) classes.
+- 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 built with flexbox, providing easy alignment options via utility classes.
 - Navbars are responsive by default, but you can easily modify them to change that. Responsive behavior depends on our Collapse JavaScript plugin.
@@ -38,7 +38,7 @@ Navbars come with built-in support for a handful of sub-components. Choose from
 Here's an example of all the sub-components included in a responsive light-themed navbar that automatically collapses at the `lg` (large) breakpoint.
 
 {% example html %}
-<nav class="navbar navbar-toggleable-lg navbar-light bg-faded">
+<nav class="navbar navbar-expand-lg navbar-light bg-faded">
   <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>
@@ -108,7 +108,7 @@ Navbar navigation links build on our `.nav` options with their own modifier clas
 Active states—with `.active`—to indicate the current page can be applied directly to `.nav-link`s or their immediate parent `.nav-item`s.
 
 {% example html %}
-<nav class="navbar navbar-toggleable-lg navbar-light bg-faded">
+<nav class="navbar navbar-expand-lg navbar-light bg-faded">
   <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>
@@ -135,7 +135,7 @@ Active states—with `.active`—to indicate the current page can be applied dir
 And because we use classes for our navs, you can avoid the list-based approach entirely if you like.
 
 {% example html %}
-<nav class="navbar navbar-toggleable-lg navbar-light bg-faded">
+<nav class="navbar navbar-expand-lg navbar-light bg-faded">
   <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>
@@ -154,7 +154,7 @@ And because we use classes for our navs, you can avoid the list-based approach e
 You may also utilize dropdowns in your navbar nav. Dropdown menus require a wrapping element for positioning, so be sure to use separate and nested elements for `.nav-item` and `.nav-link` as shown below.
 
 {% example html %}
-<nav class="navbar navbar-toggleable-lg navbar-light bg-faded">
+<nav class="navbar navbar-expand-lg navbar-light bg-faded">
   <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>
@@ -249,7 +249,7 @@ Navbars may contain bits of text with the help of `.navbar-text`. This class adj
 Mix and match with other components and utilities as needed.
 
 {% example html %}
-<nav class="navbar navbar-toggleable-lg navbar-light bg-faded">
+<nav class="navbar navbar-expand-lg navbar-light bg-faded">
   <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>
@@ -278,7 +278,7 @@ Mix and match with other components and utilities as needed.
 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-inverse` for dark background colors. Then, customize with `.bg-*` utilities.
 
 <div class="bd-example">
-  <nav class="navbar navbar-toggleable-lg navbar-inverse bg-inverse">
+  <nav class="navbar navbar-expand-lg navbar-inverse bg-inverse">
     <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>
@@ -306,7 +306,7 @@ Theming the navbar has never been easier thanks to the combination of theming cl
     </div>
   </nav>
 
-  <nav class="navbar navbar-toggleable-lg navbar-inverse bg-primary">
+  <nav class="navbar navbar-expand-lg navbar-inverse 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>
@@ -334,7 +334,7 @@ Theming the navbar has never been easier thanks to the combination of theming cl
     </div>
   </nav>
 
-  <nav class="navbar navbar-toggleable-lg navbar-light" style="background-color: #e3f2fd;">
+  <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>
@@ -383,16 +383,16 @@ Although it's not required, you can wrap a navbar in a `.container` to center it
 
 {% example html %}
 <div class="container">
-  <nav class="navbar navbar-toggleable-lg navbar-light bg-faded">
+  <nav class="navbar navbar-expand-lg navbar-light bg-faded">
     <a class="navbar-brand" href="#">Navbar</a>
   </nav>
 </div>
 {% endexample %}
 
-When the container is within your navbar, its horizontal padding is removed at breakpoints lower than your specified `.navbar-toggleable{-sm|-md|-lg|-xl}` class. This ensures we're not doubling up on padding unnecessarily on lower viewports when your navbar is collapsed.
+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.
 
 {% example html %}
-<nav class="navbar navbar-toggleable-lg navbar-light bg-faded">
+<nav class="navbar navbar-expand-lg navbar-light bg-faded">
   <div class="container">
     <a class="navbar-brand" href="#">Navbar</a>
   </div>
@@ -429,9 +429,9 @@ Use our position utilities to place navbars in non-static positions. Choose from
 
 ## Responsive behaviors
 
-Navbars can utilize `.navbar-toggler`, `.navbar-collapse`, and `.navbar-toggleable{-sm|-md|-lg|-xl}` classes to change when their content collapses behind a button. In combination with other utilities, you can easily choose when to show or hide particular elements.
+Navbars can utilize `.navbar-toggler`, `.navbar-collapse`, and `.navbar-expand{-sm|-md|-lg|-xl}` classes to change when their content collapses behind a button. In combination with other utilities, you can easily choose when to show or hide particular elements.
 
-For navbars that never collapse, add the `.navbar-toggleable` class on the navbar. For navbars that always collapse, don't add any `.navbar-toggleable` class.
+For navbars that never collapse, add the `.navbar-expand` class on the navbar. For navbars that always collapse, don't add any `.navbar-expand` class.
 
 ### Toggler
 
@@ -440,7 +440,7 @@ Navbar togglers are left-aligned by default, but should they follow a sibling el
 With no `.navbar-brand` shown in lowest breakpoint:
 
 {% example html %}
-<nav class="navbar navbar-toggleable-lg navbar-light bg-faded">
+<nav class="navbar navbar-expand-lg navbar-light bg-faded">
   <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>
@@ -468,7 +468,7 @@ With no `.navbar-brand` shown in lowest breakpoint:
 With a brand name shown on the left and toggler on the right:
 
 {% example html %}
-<nav class="navbar navbar-toggleable-lg navbar-light bg-faded">
+<nav class="navbar navbar-expand-lg navbar-light bg-faded">
   <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>
@@ -497,7 +497,7 @@ With a brand name shown on the left and toggler on the right:
 With a toggler on the left and brand name on the right:
 
 {% example html %}
-<nav class="navbar navbar-toggleable-lg navbar-light bg-faded">
+<nav class="navbar navbar-expand-lg navbar-light bg-faded">
   <a class="navbar-brand" href="#">Navbar</a>
   <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>