text: $(document).ready(function () {
      "use strict";
  
      $("#buy_img").hover(
          function () {
              $(this).attr("src", "../static/img/features/buy-hover.png");
          },
          function () {
              $(this).attr("src", "../static/img/features/buy.png");
          }
      );
  
      $("#sell_img").hover(
          function () {
              $(this).attr("src", "../static/img/features/sell-hover.png");
          },
          function () {
              $(this).attr("src", "../static/img/features/sell.png");
          }
      );
  
      $("#trade_img").hover(
          function () {
              $(this).attr("src", "../static/img/features/trade-hover.png");
          },
          function () {
              $(this).attr("src", "../static/img/features/trade.png");
          }
      );
  
      var $animation_elements = $(".animation-element");
      var $window = $(window);
  
      function check_if_in_view() {
          var window_height = $window.height();
          var window_top_position = $window.scrollTop();
          var window_bottom_position = window_top_position + window_height;
  
          $.each($animation_elements, function () {
              var $element = $(this);
              var element_height = $element.outerHeight();
              var element_top_position = $element.offset().top;
              var element_bottom_position = element_top_position + element_height;
  
              //check to see if this current container is within viewport
              if (
                  element_bottom_position >= window_top_position &&
                  element_top_position <= window_bottom_position
              ) {
                  $element.addClass("in-view");
              } else {
                  $element.removeClass("in-view");
              }
          });
      }
  
      $window.on("scroll resize", check_if_in_view);
      $window.trigger("scroll");
  });
  