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                <nav id="pnProductNav" class="pn-ProductNav">
    <div id="pnProductNavContents" class="pn-ProductNav_Contents">
        <a href="#" class="pn-ProductNav_Link" aria-selected="true">Chairs</a>
        <a href="#" class="pn-ProductNav_Link">Tables</a>
        <a href="#" class="pn-ProductNav_Link">Cookware</a>
        <a href="#" class="pn-ProductNav_Link">Beds</a>
        <a href="#" class="pn-ProductNav_Link">Desks</a>
        <a href="#" class="pn-ProductNav_Link">Flooring</a>
        <a href="#" class="pn-ProductNav_Link">Lighting</a>
        <a href="#" class="pn-ProductNav_Link">Mattresses</a>
        <a href="#" class="pn-ProductNav_Link">Solar Panels</a>
        <a href="#" class="pn-ProductNav_Link">Bookcases</a>
        <a href="#" class="pn-ProductNav_Link">Mirrors</a>
        <a href="#" class="pn-ProductNav_Link">Rugs</a>  
        <a href="#" class="pn-ProductNav_Link">Curtains &amp; Blinds</a>  
        <a href="#" class="pn-ProductNav_Link">Frames &amp; Pictures</a>  
        <a href="#" class="pn-ProductNav_Link">Wardrobes</a>  
        <a href="#" class="pn-ProductNav_Link">Storage</a>  
        <a href="#" class="pn-ProductNav_Link">Decoration</a>  
        <a href="#" class="pn-ProductNav_Link">Appliances</a>
		 <a href="#" class="pn-ProductNav_Link">Racks</a>
        <a href="#" class="pn-ProductNav_Link">Worktops</a>


                .pn-ProductNav {
    /* Make this scrollable when needed */
    overflow-x: auto;
    /* We don't want vertical scrolling */
    overflow-y: hidden;
    /* For WebKit implementations, provide inertia scrolling */
    -webkit-overflow-scrolling: touch;
    /* We don't want internal inline elements to wrap */
    white-space: nowrap;
    /* If JS present, let's hide the default scrollbar */
    .js & {
        /* Make an auto-hiding scroller for the 3 people using a IE */
        -ms-overflow-style: -ms-autohiding-scrollbar;
        /* Remove the default scrollbar for WebKit implementations */
        &::-webkit-scrollbar {
            display: none;

.pn-ProductNav_Contents {
	float: left;

.pn-ProductNav_Link {
	text-decoration: none;
	color: #888;
	font-size: 1.2em;
	font-family: -apple-system, sans-serif;
	display: inline-flex;
	align-items: center;
	min-height: 44px;
	& + & {
		margin-left: 11px;
		padding-left: 11px;
		border-left: 1px solid #eee;
	&[aria-selected="true"] {
		color: #111;



var pnProductNav = document.getElementById("pnProductNav");
var pnProductNavContents = document.getElementById("pnProductNavContents");

pnProductNav.setAttribute("data-overflowing", determineOverflow(pnProductNavContents, pnProductNav));

function determineOverflow(content, container) {
    var containerMetrics = container.getBoundingClientRect();
    var containerMetricsRight = Math.floor(containerMetrics.right);
    var containerMetricsLeft = Math.floor(containerMetrics.left);
    var contentMetrics = content.getBoundingClientRect();
    var contentMetricsRight = Math.floor(contentMetrics.right);
    var contentMetricsLeft = Math.floor(contentMetrics.left);
	console.log(containerMetricsLeft, contentMetricsLeft, containerMetricsRight, contentMetricsRight);
    if (containerMetricsLeft > contentMetricsLeft && containerMetricsRight < contentMetricsRight) {
        return "both";
    } else if (contentMetricsLeft < containerMetricsLeft) {
        return "left";
    } else if (contentMetricsRight > containerMetricsRight) {
        return "right";
    } else {
        return "none";