JSFiddle - React, Tailwind, and code Playground

HTML

<div id="content">
    <div id="left">
        <div class="pr" id="ani">
             <h3 id="rocket" style="bottom:50px"></h3>

            <div id="rocket-smoke"></div>
        </div>
    </div>
</div>

CSS

body {
    background:#e14f22;
}
#rocket {
    position:absolute;
    bottom:50px;
    right:91px;
    background:url(http://walkoverapps.com/landing-content/rct.png) no-repeat;
    width:68px;
    height:84px;
    z-index:20;
}
.fire {    
    -moz-transition: bottom 5s;
    -webkit-transition: bottom 5s;
    -ms-transition: bottom 5s;
    -o-transition: bottom 5s;
    transition: bottom 5s;
}

JavaScript

$(document).ready(function () {
    setTimeout(function () {
        $('#rocket').addClass('fire').css('bottom', 600);
    }, 2000);
});