[Changes as per sugession]

Author: hitesh-wagento

app/design/frontend/Magento/blank/web/css/source/_navigation.less

@@ -154,7 +154,7 @@
                 &.greet.welcome {
                     border-top: 1px solid @color-gray82;
                     font-weight: @font-weight__bold;
-                    padding: .8rem 15px .8rem @submenu__padding-left;
+                    padding: .8rem @submenu__padding-left;
                 }
 
                 > a {
@@ -168,7 +168,7 @@
                 .lib-css(text-decoration, @navigation-level0-item__text-decoration);
                 display: block;
                 font-weight: @font-weight__bold;
-                padding: .8rem 15px .8rem @submenu__padding-left;
+                padding: .8rem @submenu__padding-left;
             }
 
             .header.links {