<link href="//netdna.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="container">
<div class="row">
<h2>3D Buttons</h2>
<div class="well text-center">
<button type="button" class="btn btn-hot text-capitalize btn-xs">hot button</button>
<button type="button" class="btn btn-sunny text-capitalize btn-xs">Sunny button</button>
<button type="button" class="btn btn-fresh text-capitalize btn-xs">Fresh button</button>
<button type="button" class="btn btn-sky text-capitalize btn-xs">Sky button</button>
</div>
<div class="well text-center">
<button type="button" class="btn btn-hot text-uppercase btn-sm">hot button</button>
<button type="button" class="btn btn-sunny text-uppercase btn-sm">Sunny button</button>
<button type="button" class="btn btn-fresh text-uppercase btn-sm">Fresh button</button>
<button type="button" class="btn btn-sky text-uppercase btn-sm">Sky button</button>
</div>
<div class="well text-center">
<button type="button" class="btn btn-hot text-uppercase">hot button</button>
<button type="button" class="btn btn-sunny text-uppercase">Sunny button</button>
<button type="button" class="btn btn-fresh text-uppercase">Fresh button</button>
<button type="button" class="btn btn-sky text-uppercase">Sky button</button>
</div>
<div class="well text-center">
<button type="button" class="btn btn-hot text-uppercase btn-lg">hot button</button>
<button type="button" class="btn btn-sunny text-uppercase btn-lg">Sunny button</button>
<button type="button" class="btn btn-fresh text-uppercase btn-lg">Fresh button</button>
<button type="button" class="btn btn-sky text-uppercase btn-lg">Sky button</button>
</div>
</div>
</div>