code clean up

Author: Karlasa

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

@@ -128,7 +128,7 @@
         float: right;
 
         .block-minicart {
-            padding: 25px @minicart__padding-horizontal;
+            .lib-css(padding, 25px @minicart__padding-horizontal);
 
             .block-title {
                 display: none;
@@ -216,8 +216,8 @@
     }
 
     .minicart-items-wrapper {
-        border: 1px solid @minicart__border-color;
-        margin: 0 -@minicart__padding-horizontal;
+        .lib-css(border, 1px solid @minicart__border-color);
+        .lib-css(margin, 0 -@minicart__padding-horizontal);
         border-left: 0;
         border-right: 0;
         overflow-x: auto;
@@ -231,7 +231,7 @@
             padding: @indent__base 0;
 
             &:not(:first-child) {
-                border-top: 1px solid @minicart__border-color;
+                .lib-css(border-top, 1px solid @minicart__border-color);
             }
 
             &:first-child {