rename from .navbar-toggleable to .navbar-expand to reflect mobile first approach everywhere else

1 files changed, 1 insertions, 1 deletions

diff --git a/docs/migration.md b/docs/migration.md
index 166533db1..9cbdca52c 100644
--- a/docs/migration.md
+++ b/docs/migration.md
@@ -151,7 +151,7 @@ New to Bootstrap 4 is the Reboot, a new stylesheet that builds on Normalize with
 
 The navbar has been entirely rewritten in flexbox with improved support for alignment, responsiveness, and customization.
 
-- Responsive navbar behaviors are now applied to the `.navbar` class via the **required** `.navbar-toggleable-{breakpoint}` where you choose where to collapse the navbar. Previously this was a Less variable modification and required recompiling.
+- Responsive navbar behaviors are now applied to the `.navbar` class via the **required** `.navbar-expand-{breakpoint}` where you choose where to collapse the navbar. Previously this was a Less variable modification and required recompiling.
 - `.navbar-default` is now `.navbar-light`, though `.navbar-inverse` remains the same. **One of these is required on each navbar.** However, these classes no longer set `background-color`s; instead they essentiatlly only affect `color`.
 - Navbars now require a background declaration of some kind. Choose from our background utilities (`.bg-*`) or set your own with the light/inverse classes above [for mad customization]({{ site.baseurl }}/components/navbar/#color-schemes).
 - Given flexbox styles, navbars can now use flexbox utilities for easy alignment options.