<body>
<div class="scroll-floor">
<ul class="side">
<li class="active">1F</li>
<li>2F</li>
<li>3F</li>
<li>4F</li>
<li>5F</li>
<li>6F</li>
<li>7F</li>
<li>8F</li>
<li>9F</li>
<li>10F</li>
</ul>
<div class="cont">
<div class="cont-list">1f</div>
<div class="cont-list">2f</div>
<div class="cont-list">3f</div>
<div class="cont-list">4f</div>
<div class="cont-list">5f</div>
<div class="cont-list">6f</div>
<div class="cont-list">7f</div>
<div class="cont-list">8f</div>