Histórico da Página

<style>
.btn {
    display:block;
    background:#FAA619;
    padding:8px 12px;
    color:#fff !important;
    border-radius:4px;
    min-width:100px;
	position:relative;
	text-align:center;
}
.btn:hover {
	text-decoration:none;
	opacity:0.9;
}
ul.list {
	margin:0;
	padding:0;
}
ul.list li {
	float:left;
	list-style:none;
	margin-right:8px;
}
ul.list li:last-child {
	float:none;
}
</style>


<ul class="list">
	<li><a href="javascript:void(0)" class="btn">Android</a></li>
	<li><a href="javascript:void(0)" class="btn">iOS</a></li>
	<li style="clear:both;"></li>
</ul>