JSFiddle - React, Tailwind, and code Playground

HTML

<h2>CSS Background-Position ( good )</h2>
<p id="bg-good" class="boxbg"></p> 

<h2>CSS Background-Position ( fail )</h2>
<p id="bg-fail" class="boxbg"></p>

JavaScript

$( '.boxbg' ).css( { 
    'width': '100px', 'height': '68px', 
    'background': '#111 url(http://oi52.tinypic.com/b5iq2w.jpg) 0 0 no-repeat' 
} ); 
$( '#bg-good' ).stop().animate( { 'background-position':'-60px' }, 2000 ); 
$( '#bg-fail' ).stop().animate( { 'background-position':'-60px -2px' }, 2000 );