<link href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="container">
<div class="row">
<button type="button" class="btn btn-default btn-lg btn-filter"><i class="glyphicon glyphicon-search"></i></button><br>
<div class="btn-float">
<button type="button" class="btn btn-default btn-circle btn-xl btn-lateral"><i class="glyphicon glyphicon-envelope"></i></button><br>
<button type="button" class="btn btn-default btn-circle btn-xl btn-lateral"><i class="glyphicon glyphicon-comment"></i></button>
</div>
</div>
</div>