我有这个HTML
<head>
<title>HTML5 App</title>
<link rel="stylesheet" type="text/css" href="css/custom.css">
<link rel="stylesheet" type="text/css" href="css/buttons.css">
</head>
<body>
<!--Estructura -->
<div id="botones">
<button class="btn" data-am-type="button">Soy un <button></button>
<a class="btn" data-am-type="button">Soy un <a></a>
<div class="btn" data-am-type="button">Soy un <div></div>
<input class="btn" type="button" value="Soy un <input>">
</div>
</body>