body 末尾添加 ppt.js，引用 ppt.css 样式，按照如下格式写html
<html>
<head></head>
<body>
<div class="index">
<ul>
</ul>
</div>
<div class="view">
<div class="page" data-title="title of page1">
<div class="page-container">
<h1>Page1</h1>
</div>
</div>
<div class="page" data-title="title of page2">
<div class="page-container">
<h1>Page2</h1>
</div>
</div>
</div>
<body>
<script src="ppt.js"></script>
</html>