Bootstrap5 IE 11 suuport ---- and vendor - prefix -change

there are 6 vendor-prefixes and @import "vp-mixins/sass-prefixer"; in _mixins.scss   which together make the compilation relativ slow ( bootstrap 5.3.min.css is 230 KB !)
If You want to use both prefixers, You may remove the // before  @import "vp-mixins/sass-prefixer (or also  use it alone)

include/thirdparty/Bootstrap5.2/scss/bootstrap/_mixins.scss

@@ -2,14 +2,6 @@
 //
 // Used in conjunction with global variables to enable certain theme features.
 
-// Vendor Prefix Mixins
-@import "vp-mixins/variables";
-@import "vp-mixins/flexbox";
-@import "vp-mixins/general";
-@import "vp-mixins/forms";
-@import "vp-mixins/transitions";
-@import "vp-mixins/backgrounds";
-@import "vp-mixins/sass-prefixer";
 
 // Vendor
 @import "vendor/rfs";
@@ -50,3 +42,12 @@
 @import "mixins/clearfix";
 @import "mixins/container";
 @import "mixins/grid";
+
+// Vendor Prefix Mixins
+@import "vp-mixins/variables";
+@import "vp-mixins/flexbox";
+@import "vp-mixins/general";
+@import "vp-mixins/forms";
+@import "vp-mixins/transitions";
+@import "vp-mixins/backgrounds";
+//@import "vp-mixins/sass-prefixer";

include/thirdparty/Bootstrap5.3/scss/bootstrap/_mixins.scss

@@ -3,16 +3,6 @@
 // Used in conjunction with global variables to enable certain theme features.
 
 
-// Vendor Prefix Mixins
-@import "vp-mixins/variables";
-@import "vp-mixins/flexbox";
-@import "vp-mixins/general";
-@import "vp-mixins/forms";
-@import "vp-mixins/transitions";
-@import "vp-mixins/backgrounds";
-@import "vp-mixins/sass-prefixer";
-
-
 // Vendor
 @import "vendor/rfs";
 
@@ -51,3 +41,12 @@
 @import "mixins/clearfix";
 @import "mixins/container";
 @import "mixins/grid";
+
+// Vendor Prefix Mixins
+@import "vp-mixins/variables";
+@import "vp-mixins/flexbox";
+@import "vp-mixins/general";
+@import "vp-mixins/forms";
+@import "vp-mixins/transitions";
+@import "vp-mixins/backgrounds";
+//@import "vp-mixins/sass-prefixer";