css 4种引入方式
HTML中引入CSS控制有下面四种方式：（相关教程：HTML入门教程）
1)行内式
比如:
<body>
<h1 style="color:white;background-color:blue">
This is a line of Text.
</h1>
</body>
2)嵌入式
比如:
<head>
<style type="text/css">
h1{color:white;background-color:blue}
</style>
</head>
<body>
<h1>This is a line of Text.</h1>
<h1>This is another line of Text.</h1>
</body>
3)导入式写法(注意CSS文件的路径要正确):
<head>
<style type="text/css">@import"mycss.css";</style></head>
<body>
<h1>This is a line of Text.</h1>
<h1>This is another line of Text.</h1>
</body>
4)链接式写法(注意CSS文件的路径要正确):
<head>
<link href="mycss.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<h1>This is a line of Text.</h1>
<h1>This is another line of Text.</h1>
</body>
