Handle Scroll

        handleScrollWithBar = (e) => {
            if(e.target.scrollHeight > e.target.offsetHeight){
                if(e.target.offsetHeight + e.target.scrollTop == e.target.scrollHeight){
                    let scrolled = update(this.state.scrolled, {$merge: {isScrolled: false }});
                    this.setState({scrolled});
                    this.nextSection();
                }
            }
        };

        nextSection = () => {
        if(!this.state.scrolled.isScrolled){
            var nxtSection = this.state.heightScreen + 100;
            this.setState({ heightScreen: nxtSection });
            var newCss = document.createElement("style");
            newCss.type = "text/css";
            newCss.innerHTML = ".page-home { transform: translate3d(0px, -"+nxtSection+"vh, 0px); }";
            document.body.appendChild(newCss);
        }
    };