那里有问题 就是达不到这个效果
<html>
<head>
<meta http-equiv="content-type" content="text/html" charset="gb2312">
<title>随意</title>
<style type="text/css">
.price{font-decoration:line-through;}
</style>
</head>
<body>
<h1>标题</h1>
<p>内容<span class="price">300</span></p>
</body>
</html>
