Horizontal image list

HTML

<div id="container">
    <ul>
        <li>
            <img src="http://pierreschilling.cool/img/1.jpg" alt="OMG Kittehs!">
        </li>
        <li>
             <img src="http://pierreschilling.cool/img/2.jpg" alt="OMG Kittehs!">   
        </li>
        <li>
             <img src="http://pierreschilling.cool/img/3.jpg" alt="OMG Kittehs!">   
        </li>
        <li>
             <img src="http://pierreschilling.cool/img/4.jpg" alt="OMG Kittehs!">   
        </li>
    </ul>
</div>

CSS

#container {
    overflow: auto;
    width: 100%;
}

ul {
    white-space: nowrap;
}

li {
    display: inline-table;
    margin-right: -4px;
}

img {
    display: inline-block;
    max-height:500px;
    margin-right:20px;
}