JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://code.jquery.com/jquery-2.1.4.min.js"></script>
<div id="myNewsticker">
    <div id="newsNav"> <a href="#" id="prev"><img src="images/back.png"></a><a href="#" id="next"><img src="images/next.png"></a>

    </div>
    <div class="tickerLable">News:</div>
    <div id="newsContent">

    </div>
</div>

CSS

/***location of news ticker***/
 #myNewsticker {
    float: right;
    margin-top: 20px;
    margin-right: 8px;
    width: 460px;
    border-radius: 25px;
    padding: 0 20px;
    background: #851818;
    color: white;
    font-size: 14px;
    font-family: calibri;
    /*display: inline-block;*/
}
/*****newsTickerLable*******/
 .tickerLable {
    margin: 5px;
    padding: 5px;
    max-width: 38px;
}
/****hides all news ticker entries*****/
 #myNewsticker .newsTicker {
    display: none;
}
/****unhides the active ticker entry****/
 #myNewsticker .newsTicker.active {
    display: block;
}
/***location of news ticker content***/
 .newsTicker {
    margin-top: -32px;
    padding: 5px;
    max-width: 400px;
    float: left;
    margin-left: 60px;
}
/*****ticker navigation location***/
 #newsNav {
    padding-top: 3px;
    width: 51px;
    float: right;
    margin-right: 15px;
    margin-top: 3px;
}
/*****ticker navigation buttons******/
 #prev img, #next img {
    width: 25px;
    /***changes size of images height and width****/
}

/*****popup window*****/

#pop_background {
    position: fixed;
    width: 100%;
    height: 900px;
    top: 0;
    left: 0;
    background: #000;
    opacity: .8;
    z-index: 1000;
    cursor: pointer;
    display: none;
}

#pop_box {
    position: absolute;
    background: #fff;
    width: 30%;
    margin: 100px 0 0 35%;
    padding: 20px;
    z-index: 1500;
    display: none;
}

#close {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: 1px solid #999;
    text-align: center;
    line-height: 30px;
    font-size: 30px;
	cursor: pointer;
    float: right;
}

JavaScript

$(function () {
///////////////////////////////////////////////
    $(document).ready(function () {
				
        var newsChange, int
        
        int = setInterval(newsChange, 3000);
        
        $("#myNewsticker").mouseover(function(){
                clearInterval(int);
        });

        $("#myNewsticker").mouseout(function(){
                int = setInterval(newsChange, 3000);
        });

        function newsChange() {
            var activeDiv = $("div.active");
            activeDiv.removeClass("active").css("opacity", 0).animate({
                opacity: 1
            }, 800);

            if (activeDiv.next().length === 0) {
                $("div.newsTicker").eq(0).addClass("active").css("opacity", 0).animate({
                    opacity: 1
                }, 800);
            } else {
                activeDiv.next().addClass("active").css("opacity", 0).animate({
                    opacity: 1
                }, 800);
            }
        };
    });
/////////////////////////////////////////////// 
    $("#next").click(function () {
        var activeDiv = $("div.active");
        activeDiv.removeClass("active");
        if (activeDiv.next().length === 0) {
            $("div.newsTicker").eq(0).addClass("active").css("opacity", 0).animate({
                opacity: 1
            }, 800);
        } else {
            activeDiv.next().addClass("active").css("opacity", 0).animate({
                opacity: 1
            }, 800);
        }
    });   
/////////////////////////////////////////////// 
    $("#prev").click(function () {
        var activeDiv = $("div.active");
        activeDiv.removeClass("active");
        if (activeDiv.prev().length === 0) {
            $("div.newsTicker").eq(-1).addClass("active").css("opacity", 0).animate({
                opacity: 1
            }, 800);
        } else {
            activeDiv.prev().addClass("active").css("opacity", 0).animate({
                opacity: 1
            }, 800);
        }
   ...