Floating Component

 let FloatingBox = (function() {

   let elements = {
     leftColumn: null,
     popularBox: null,
     floatingBox: null,
     newPosition: null,
     defaultPosition: "0px",
     porcent: null,
     gutter: null
   }

   function start() {
     
     setTimeout(function(){
       
       let positionTop = elements.defaultPosition;
       
       if(window.pageYOffset > 0){
       
         let dom = document;
         
         // Element Assign
         elements.leftColumn = dom.querySelector(".qb-float-component .col-md-8").getBoundingClientRect();
         elements.popularBox = dom.querySelector(".qb-float-component .qb-post-popular-component").getBoundingClientRect();
         elements.floatingBox = dom.querySelector(".qb-float-component .qb-call-in-action-floating-component");

         // Variables Assign
         elements.porcent = (elements.leftColumn.height * 0.6);
         elements.gutter = (elements.leftColumn.height - Math.abs(elements.leftColumn.top)) - window.innerHeight;

         positionTop = onScroll();
       }
       
       return elements.floatingBox.style.marginTop = positionTop;
       
     }, 500);
   }

   function onScroll(event) {
     if ((Math.abs(elements.leftColumn.top)) >= elements.popularBox.height) {
       elements.newPosition = relocation();
     } else {
       elements.newPosition = elements.defaultPosition;
     }
     return elements.newPosition;
   }

   function relocation() {
     let newTop = null;
     let viewPortMargin

     if (Math.abs(elements.leftColumn.top) < elements.porcent) {
       viewPortMargin = elements.leftColumn.height - 
           (elements.leftColumn.height - elements.leftColumn.top);
       newTop = Math.abs(viewPortMargin) + "px";
     } else {
       newTop = (elements.leftColumn.height - elements.floatingBox.getBoundingClientRect().height 
                 - elements.popularBox.height) + "px";
     }
     return newTop;
   }

   return {
     start: start,
     onScroll: onScroll,
     relocation: relocation
   }

 })();

 window.addEventListener("scroll", FloatingBox.start, false);