Add $duration to initial-variables

CHANGELOG.md

@@ -6,6 +6,7 @@
 
 - Fix #3842: restore use of `$easing`, `$radius-rounded` and `$speed` Sass variables
 - Fix #3920: migrate code to avoid Sass 1.80 deprecation warning of global built-in functions
+- Fix #3945: add `$duration` Sass variable
 
 ### Documentation Fixes
 
@@ -34,7 +35,7 @@
   - `--bulma-input-border-width`
   - `--bulma-label-color`
   - `--bulma-label-spacing`
-  - `--bulma-label-weight` 
+  - `--bulma-label-weight`
   - `--bulma-help-size`
   - `--bulma-field-block-spacing`
 
@@ -71,7 +72,7 @@
 - Fix #3785: make use of the `@prefers-reduced-motion` setting
 - Fix #3758: broken links for `0.9.4` version
 - Fix #3760: fix form controls typo
- 
+
 ### Improvements
 
 - Fix #3737: Move `sass` to `devDependencies`
@@ -161,7 +162,7 @@ The Sass placeholders are:
 - `%loader`
 - `%overlay`
 
-If you were importing them directly from `utilities/mixins`, you'll need to import `utilities/extends` instead.  
+If you were importing them directly from `utilities/mixins`, you'll need to import `utilities/extends` instead.
 If you were importing `utilities/_all` or even `bulma.sass` directly, no change is required.
 
 ### New features