JSFiddle - React, Tailwind, and code Playground

HTML

<script src="//code.jquery.com/jquery-1.8.3.min.js"></script>
<ul class="social-media-nav-center">
  <li>
    <a href="https://twitter.com/" target="_blank"><img id="twitter" class="small" src="https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcRgdlWvqZIB0r6qkjFS_t9uMKD9gQIVMV3fE-Vw9BMoRfNEmJG2" /> 
    </a>
  </li>
</ul>

CSS

.social-media-nav-center{height:1000px;}

JavaScript

$(document).ready(function(){
  $(window).scroll(function(){      
    if($(window).scrollTop() > $(window).height()) {
      $("#twitter").attr("src", "http://www.planwallpaper.com/static/images/744081-background-wallpaper.jpg");
    }
  })
})