Expand `visually-hidden-focusable` so it can be used on a container, so the container becomes visible when focus is inside it / on one of its child elements.

4 files changed, 12 insertions, 5 deletions

diff --git a/scss/helpers/_visually-hidden.scss b/scss/helpers/_visually-hidden.scss
index 0a843d383..4760ff03d 100644
--- a/scss/helpers/_visually-hidden.scss
+++ b/scss/helpers/_visually-hidden.scss
@@ -3,6 +3,6 @@
 //
 
 .visually-hidden,
-.visually-hidden-focusable:not(:focus) {
+.visually-hidden-focusable:not(:focus):not(:focus-within) {
   @include visually-hidden();
 }
diff --git a/scss/mixins/_visually-hidden.scss b/scss/mixins/_visually-hidden.scss
index d980696c8..ed7bc9c13 100644
--- a/scss/mixins/_visually-hidden.scss
+++ b/scss/mixins/_visually-hidden.scss
@@ -17,12 +17,13 @@
   border: 0 !important;
 }
 
-// Use to only display content when it's focused.
+// Use to only display content when it's focused, or one of its child elements is focused
+// (i.e. when focus is within the element/container that the class was applied to)
 //
 // Useful for "Skip to main content" links; see https://www.w3.org/TR/2013/NOTE-WCAG20-TECHS-20130905/G1
 
 @mixin visually-hidden-focusable() {
-  &:not(:focus) {
+  &:not(:focus):not(:focus-within) {
     @include visually-hidden();
   }
 }
diff --git a/site/content/docs/5.0/helpers/visually-hidden.md b/site/content/docs/5.0/helpers/visually-hidden.md
index f80160edd..d8148b3f3 100644
--- a/site/content/docs/5.0/helpers/visually-hidden.md
+++ b/site/content/docs/5.0/helpers/visually-hidden.md
@@ -6,13 +6,16 @@ group: helpers
 aliases: "/docs/5.0/helpers/screen-readers/"
 ---
 
-Visually hide an element while still allowing it to be exposed to assistive technologies (such as screen readers) with `.visually-hidden`. Use `.visually-hidden-focusable` to visually hide an element by default, but to display it when it's focused (e.g. by a keyboard-only user). Can also be used as mixins.
+Visually hide an element while still allowing it to be exposed to assistive technologies (such as screen readers) with `.visually-hidden`. Use `.visually-hidden-focusable` to visually hide an element by default, but to display it when it's focused (e.g. by a keyboard-only user). `.visually-hidden-focusable` can also be applied to a container–thanks to `:focus-within`, the container will be displayed when any child element of the container receives focus.
 
 {{< example >}}
 <h2 class="visually-hidden">Title for screen readers</h2>
 <a class="visually-hidden-focusable" href="#content">Skip to main content</a>
+<div class="visually-hidden-focusable">A container with a <a href="#">focusable element</a>.</div>
 {{< /example >}}
 
+Both `visually-hidden` and `visually-hidden-focusable` can also be used as mixins.
+
 ```scss
 // Usage as a mixin
 
diff --git a/site/content/docs/5.0/migration.md b/site/content/docs/5.0/migration.md
index 05bf47705..952cc937e 100644
--- a/site/content/docs/5.0/migration.md
+++ b/site/content/docs/5.0/migration.md
@@ -9,6 +9,10 @@ toc: true
 
 ## v5.0.0-beta2
 
+### Sass
+
+- Extended the `.visually-hidden-focusable` helper to also work on containers, using `:focus-within`.
+
 ### JavaScript
 
 - The default value for the `fallbackPlacements` is changed to `['top', 'right', 'bottom', 'left']` for better placement of popper elements.
@@ -58,7 +62,6 @@ Breakpoints specific variants are consequently renamed too (eg. `.text-md-start`
 - Renamed `$form-check-inline-margin-right` to `$form-check-inline-margin-end`.
 - Renamed `$form-select-feedback-icon-padding-right` to `$form-select-feedback-icon-padding-end`.
 
-
 ### JavaScript
 
 - Data attributes for all JavaScript plugins are now namespaced to help distinguish Bootstrap functionality from third parties and your own code. For example, we use `data-bs-toggle` instead of `data-toggle`.