 <p>I got this to work by combining both of the answers already provided;</p> <ul> <li>Wrap the <code>&lt;ul&gt;</code> into its own <code>&lt;div id="scroller"&gt;</code></li> <li>Remove the fixed <code>width</code> property from the <code>.simply-scroll .simply-scroll-list li</code> element in the CSS</li> <li>Add <code>padding</code> to this element as required.</li> </ul> <p>Working in Firefox, Chrome and IE.</p>