FINoM,
<style>
#main {
background: gray;
width: 530px;
height: 500px;
overflow: hidden;
white-space: nowrap;
}
.secondary, .primary {
display: inline-block;
vertical-align: middle;
margin: 10px;
}
.secondary {
background: #009;
width: 50px;
height: 50px;
}
.primary {
background: #900;
width: 100px;
height: 100px;
}
</style>
<div id="main" style="position:relative;">
<div style="position:absolute;width:100%;z-index:100;text-align:center;"><div class="primary"></div></div>
<div class="secondary"></div>
<div class="secondary"></div>
<div class="secondary"></div>
<div class="secondary"></div>
<div class="secondary"></div>
<div class="secondary"></div>
<div class="secondary"></div>
<div class="secondary"></div>
</div>