JSFiddle - React, Tailwind, and code Playground

by NicoO

HTML

<table>
    <tr><td class="tdGo" style="background-color: #0000FF;"><span id="imgGo" class="imgGo"></span></td></tr>
</table>

CSS

table
{
    width: 100%;
}
td span
{
    margin: auto;
}

#imgGo {
    display: block;
    height: 28px;
    width: 28px;
    background-image: url(http://s3.postimg.org/giiu6sz73/gored.gif?noCache=1393616370);
    background-position: 0% 0%;
    position: relative;
}
 
#imgGo:after {
    position: absolute;
    width: inherit;
    height: inherit;
    top: 0;
    left: 0;
    content:"";
    opacity: 0;
    visibility: hidden;
    transition-duration: 0.4s;
        background-image: url(http://s28.postimg.org/y3fltsycp/gogreen.gif?noCache=1393616358);
}
 
#imgGo:hover:after {
    opacity: 1;
    visibility: visible;
}