JSFiddle - React, Tailwind, and code Playground

by DJS Baker

HTML

<script src="http://cdnjs.cloudflare.com/ajax/libs/jquery/1.9.0/jquery.min.js"></script>
<div id="content">
    <div id="up-left">
        <div class="box snap white">
             <h1>ONE</h1>
 <a class="more" href="" title=""></a>

        </div>
        <div class="box snap black">
             <h1>TWO</h1>
 <a class="more" href="" title=""></a>

        </div>
        <div class="box snap white">
             <h1>THREE</h1>  <a class="more" href="" title=""></a>

        </div>
        <div class="box snap black">
             <h1>FOUR</h1>  <a class="more" href="" title=""></a>

        </div>
        <div class="box snap white">
             <h1>FIVE</h1>  <a class="more" href="" title=""></a>

        </div>
        <div class="box snap black six">
             <h1>SIX</h1>  <a class="more" href="" title=""></a>

        </div>
    </div>
    <div id="down-right">
        <div class="box black">
             <h1>ONE</h1>
 <a class="more" href="" title=""></a>

        </div>
        <div class="box white">
             <h1>TWO</h1>
 <a class="more" href="" title=""></a>

        </div>
        <div class="box black">
             <h1>THREE</h1>
 <a class="more" href="" title=""></a>

        </div>
        <div class="box white">
             <h1>FOUR</h1>
 <a class="more" href="" title=""></a>

        </div>
        <div class="box black">
             <h1>FIVE</h1>
 <a class="more" href="" title=""></a>

        </div>
        <div class="box white">
             <h1>SIX</h1>
 <a class="more" href="" title=""></a>

        </div>
    </div>
</div>
<script>
    function crisscross() {
        $('up-left').style.bottom = '-' + window.scrollY + 'px';
        $('down-right').style.bottom = '-' + window.scrollY + 'px';

    }
    window.onscroll = crisscross;
</script>

CSS

div#content {
    width: 100%;
    height: 100%;
    position: absolute;
    top:0;
    right:0;
    bottom:0;
    left:0;
}
h1 {
    margin: 0;
    padding: 0;
    color:#fff
}
.box {
    position: relative;
    width: 100%;
    height: 500px;
    display: block;
    margin: 0;
    padding: 0;
}
.black {
    background: black;
}
.white {
    background: grey;
}
div#up-left {
    position:absolute;
    z-index:4px;
    left: 0;
    top: 0;
    width: 50%;
    margin: 0;
    padding: 0;
}
div#down-right {
    position:fixed;
    bottom: 0px;
    z-index: 5px;
    left: 50%;
    width: 50%;
    margin: 0;
    padding: 0;
}

JavaScript

jQuery.noConflict();
jQuery(function ($) {
    var bgHeight = 2000,
        upleft = $('#up-left'),
        downright = $('#down-right'),
        $window = $(window),
        $body = $('body');
    $('body').height(bgHeight + $window.height());
    $window.scroll(function () {
        if ($window.scrollTop() >= $body.height()-$window.height()) {
            console.log($window.scrollTop(),downright.children().last().get(0));
            downright.children().first().clone().appendTo(upleft);
            downright.children().first().remove();
			upleft.children().first().clone().appendTo(downright);
            upleft.children().first().remove();
            $window.scrollTop($window.height());
            
        } else if ($window.scrollTop() == 0) {
            console.log('--',$window.scrollTop());
            $window.scrollTop($body.height());
        }
    });
    $(window).resize(function () {
        $body.height(bgHeight + $window.height());

    });
});