<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="container">
<div class="row">
<h2 class="text-center page-header">Hover Effect On Button</h2>
<button class="btn-change">Button</button>
<button class="btn-change1">Button</button>
<button class="btn-change2">Button</button>
<button class="btn-change3">Button</button>
<button class="btn-change4">Button</button>
<button class="btn-change5">Button</button>
<button class="btn-change6">Button</button>
<button class="btn-change7">Button</button>
<button class="btn-change8">Button</button>
</div>
</div>