<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>认识html标签</title>
<style type="text/css">
body{font-family:"Microsoft Yahei"；}
</style>
</head>
body{font-family:"Microsoft Yahei"；}这句的分号你打成中文的了，要英文的分号