codice:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Documento senza titolo</title>
<link href="mio.css" rel="stylesheet" type="text/css" />
<style type="text/css">
h4, .tumbnail {
    text-align: center;
}
.thumbnail {
    padding: 5px;
}
</style>
</head>

<body>
<div class="col-md-2">
<div class="thumbnail">
<div class="caption">
<h4>NOME</h4>
</div>
</div>
</div>
</body>
</html>