Apply suggestions from code review

Author: zeripath

web_src/less/_review.less

@@ -177,11 +177,7 @@ a.blob-excerpt:hover {
 .pull.files.diff [id] {
   scroll-margin-top: 99px;
 
-  @media @mediaMd {
-    scroll-margin-top: 130px;
-  }
-
-  @media @mediaSm {
+  @media @mediaMdAndDown {
     scroll-margin-top: 130px;
   }
 }