<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>
<!------ Include the above in your HEAD tag ---------->
<head><link href='http://fonts.googleapis.com/css?family=Ubuntu:400,700&subset=latin,cyrillic,cyrillic-ext,latin-ext' rel='stylesheet' type='text/css'></head>
<body>
<div class="container">
<div class="row">
<button class="btn btn-sm btn-default">Default</button>
<button class="btn btn-sm btn-primary">Primary</button>
<button class="btn btn-sm btn-info">Info</button>
<button class="btn btn-sm btn-success">Success</button>
<button class="btn btn-sm btn-danger">Danger</button>
<button class="btn btn-sm btn-warning">Warning</button>
<br>
<br>
<button class="btn btn-default">Default</button>
<button class="btn btn-primary">Primary</button>
<button class="btn btn-info">Info</button>
<button class="btn btn-success">Success</button>
<button class="btn btn-danger">Danger</button>
<button class="btn btn-warning">Warning</button>
<br>
<br>
<button class="btn btn-lg btn-default">Default</button>
<button class="btn btn-lg btn-primary">Primary</button>
<button class="btn btn-lg btn-info">Info</button>
<button class="btn btn-lg btn-success">Success</button>
<button class="btn btn-lg btn-danger">Danger</button>
<button class="btn btn-lg btn-warning">Warning</button>
</div>
</div>
</body>
.container {margin-top:40px;}
body {text-rendering:optimizespeed;}
.btn:not(a) {border:0;border-bottom:0;border-left:0;font-weight:'900';font-family:'Ubuntu', sans-serif;box-shadow: inset 0 -3.2px rgba(0, 0, 0, 0.12),inset 2px 0 rgba(0, 0, 0, 0.1);outline:none;-webkit-outline:none;-o-outline:none;-moz-outline:none;}
.btn:active:not(a), .btn.active {outline:none;-moz-outline:none;background-image: none;-webkit-box-shadow: inset 0 3px 5px rgba(0, 0, 0, 0.125) !important;position: relative;box-shadow: inset 0 3px 5px rgba(0, 0, 0, 0.125) !important;top: 1px;left:-1px;}
.btn:focus:not(a) {outline:none;-webkit-outline:none;-moz-outline:none;}
.btn-sm {padding-top:1.5px;}
WebFontConfig = {
google: { families: [ 'Source+Sans+Pro:300,400,600:latin,latin-ext' ] }
};
(function() {
var wf = document.createElement('script');
wf.src = ('https:' == document.location.protocol ? 'https' : 'http') +
'://ajax.googleapis.com/ajax/libs/webfont/1/webfont.js';
wf.type = 'text/javascript';
wf.async = 'true';
var s = document.getElementsByTagName('script')[0];
s.parentNode.insertBefore(wf, s);
})();
