-# .scroll-top-wrapper
-#   = link_to "#banner", class: "smoothscroll" do
-#     %i.fa.fa-2x.fa-arrow-circle-up

-# :javascript
-#   $(function(){
-#     $(document).on( 'scroll', function(){
-#       if ($(window).scrollTop() > 100) {
-#           $('.scroll-top-wrapper').addClass('show');
-#       } else {
-#           $('.scroll-top-wrapper').removeClass('show');
-#       }
-#     });
-#   });