设置文件字符编码：

<meta charset="utf-8">

<style type="text/css">
  hr {color: sienna;}
  p {margin-left: 20px;}
  body {background-image: url("images/back40.gif");}
</style>

<link rel="stylesheet" type="text/css" href=http://www.mamicode.com/"mystyle.css" />

html内部编写js：

<script type="text/javascript"></script>

<script type="text/javascript" src=http://www.mamicode.com/"images/embed_index.js"></script>

编写html常用而又容易忘记的语句