Backport of PR-13750

Author: Karlasa

app/design/frontend/Magento/luma/Magento_Checkout/web/css/source/module/_minicart.less

@@ -109,6 +109,10 @@
         .lib-dropdown(
         @_toggle-selector: ~'.action.showcart',
         @_options-selector: ~'.block-minicart',
+        @_dropdown-list-width: 320px,
+        @_dropdown-list-position-right: 0px,
+        @_dropdown-list-pointer-position: right,
+        @_dropdown-list-pointer-position-left-right: 26px,    
         @_dropdown-toggle-icon-content: @icon-cart,
         @_dropdown-toggle-active-icon-content: @icon-cart,
         @_dropdown-list-item-padding: false,
@@ -124,22 +128,10 @@
 
         .block-minicart {
             .lib-css(padding, 25px @minicart__padding-horizontal);
-            right: 0;
-            width: 320px;
 
             .block-title {
                 display: none;
             }
-
-            &:after {
-                left: auto;
-                right: 25px;
-            }
-
-            &:before {
-                left: auto;
-                right: 26px;
-            }
         }
         .product {
             .actions {