Merge pull request #19631 from mahyard/master

tiny style modification

lms/static/sass/_header.scss

@@ -209,7 +209,7 @@
           position: absolute;
           background-color: theme-color("inverse");
           color: theme-color("secondary");
-          right: 30px;
+          @include right(30px);
           top: 55px;
           z-index: 10;